NZ720856B2 - Condensed imidazolylimidazoles as antiviral compounds - Google Patents
Condensed imidazolylimidazoles as antiviral compounds Download PDFInfo
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- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
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- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/04—Ortho-condensed systems
- C07D491/044—Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
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Abstract
Disclosed are specific velpatasvir analogues as antiviral compounds, optionally in combination with sofosbuvir for the treatment of Hepatitis C Virus. Representative compounds of the present application include methyl {(2S)-1-[(2S)-2-(9-{2-[(2S,4S)-1-{(2R)-2-[(methoxycarbonyl)amino]-2-phenylacetyl}-4-(methoxymethyl)pyrrolidin-2-yl]-1H-imidazol-4-yl}-1,11-dihydro[2]benzopyrano[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-pyrrolidin-1-yl]-3-methyl-1-oxobutan-2-yl}carbamate. -4-(methoxymethyl)pyrrolidin-2-yl]-1H-imidazol-4-yl}-1,11-dihydro[2]benzopyrano[4',3':6,7]naphtho[1,2-d]imidazol-2-yl)-pyrrolidin-1-yl]-3-methyl-1-oxobutan-2-yl}carbamate.
Description
CONDENSED IMIDAZOLYLIMIDAZOLES AS ANTIVIRAL COMPOUNDS
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a divisional application of New Zealand patent application no.
, the entire disclosure of which is incorporated herein by reference.
BACKGROUND
Hepatitis C is recognized as a chronic viral disease of the liver which is characterized by
liver disease. Although drugs targeting the liver are in wide use and have shown effectiveness,
toxicity and other side effects have limited their usefulness. Inhibitors of hepatitis C virus (HCV)
are useful to limit the establishment and ssion of infection by HCV as well as in diagnostic
assays for HCV.
There is a need for new HCV therapeutic agents. In particular, there is a need for HCV
therapeutic agents that have broad activity against HCV genotypes (e.g. genotypes 1s, 1b, 2a, 3a,
4a). There is also a ular need for agents that are less susceptible to viral ance.
Resistance mutations to inhibitors have been described for HCV NS5A for genotypes 1a and 1b
in Antimicrobial Agents and Chemotherapy, ber 2010, Volume 54, p. 3641-3650.
SUMMARY
In one embodiment the disclosure provides a compound of the disclosure which is a
compound of formula (I):
E1a-V1a –C(=O)-P1a -W1a -P1b -V1b-E1b (I)
wherein:
W1a is
Y5 H
and W1a is optionally substituted with one or more groups ndently selected from halo,
alkyl, haloalkyl, or cyano;
Y5 is -O-CH2-, or -CH2-O-; X5 is -CH2-CH2- or -CH=CH-;
E1b is -N(H)(alkoxycarbonyl), -N(H)(cycloalkylcarbonyl) or
-N(H)(cycloalkyloxycarbonyl); or E1b-V1b taken together are R9b;
V1a and V1b are each independently selected from:
P1a is selected from:
P1b is selected from:
;
R9a and R9b are each ndently:
N N
H H
O O ;
or a pharmaceutically acceptable salt or prodrug f.
The disclosure also provides ically enriched compounds that are compounds of
the disclosure that comprise an enriched isotope at one or more positions in the compound.
The present disclosure also provides a pharmaceutical composition comprising a
compound of the disclosure or a pharmaceutically able salt or prodrug thereof and at
least one pharmaceutically acceptable carrier.
The present disclosure also provides a pharmaceutical composition for use in treating
hepatits C (HCV). In one embodiment the composition comprises at least one additional
therapeutic agent for treating HCV. In one embodiment, the therapeutic agent is selected
from ribavirin, an NS3 protease inhibitor, a side or nucleotide inhibitor of HCV NS5B
polymerase, an glucosidase 1 inhibitor, a hepatoprotectant, a cleoside inhibitor
of HCV polymerase, or combinations thereof. In one ment, composition further
comprises a nucleoside or nucleotide inhibitor of HCV NS5B polymerase. In one
embodiment, the nucleoside or tide tor of HCV NS5B polymerase is selected
from ribavirin, viramidine, levovirin, a L-nucleoside, or isatoribine.
In one embodiment is provided a ceutical composition sing a
compound as described herein and at least one nucleoside or nucleotide inhibitor of HCV
NS5B polymerase, and at least one pharmaceutically acceptable carrier. In one embodiment,
the composition further ses an interferon, a pegylated interferon, ribavirin or
combinations thereof. In one ment, the compound is the compound exemplified in
Example PY. In one embodiment the the nucleoside or nucleotide inhibitor of HCV NS5B
polymerase is sofosbuvir.
The present sure also provides a pharmaceutical composition further comprising
an interferon or pegylated interferon.
The present disclosure also provides a pharmaceutical composition further comprising
a nucleoside analog.
The present disclosure also provides for a ceutical composition wherein said
nucleoside analogue is selected from ribavirin, viramidine, levovirin, an L-nucleoside, and
isatoribine and said interferon is α-interferon or pegylated α-interferon.
The present disclosure also provides for a method of treating hepatitis C, said method
sing administering to a human patient a pharmaceutical composition which comprises
a therapeutically effective amount of a compound of the sure.
The present disclosure also provides a method of inhibiting HCV, comprising
administering to a mammal afflicted with a condition ated with HCV activity, an
amount of a compound of the disclosure, effective to inhibit HCV.
The present disclosure also provides a compound of the disclosure for use in l
therapy (e.g. for use in inhibiting HCV activity or treating a condition associated with HCV
activity), as well as the use of a compound of the disclosure for the manufacture of a
ment useful for inhibiting HCV or the treatment of a condition associated with HCV
activity in a mammal.
The present disclosure also provides synthetic processes and novel intermediates
disclosed herein which are useful for preparing compounds of the disclosure. Some of the
compounds of the disclosure are useful to prepare other compounds of the sure.
In another aspect the disclosure provides a compound of the disclosure, or a
pharmaceutically able salt or prodrug thereof, for use in the prophylactic or therapeutic
treatment of hepatitis C or a hepatitis C associated disorder.
In another aspect the disclosure provides a method of inhibiting HCV activity in a
sample sing treating the sample with a compound of the disclosure.
nds of formula (I) have been found to possess useful activity against HCV
pes. Additionally certain compounds of formula (I) have significant potency against
resistant variants in GT1.
Accordingly, certain compounds of formula (I) s beneficial pharmacological
properties that make them well suited to fulfill the current need for HCV agents with such
beneficial properties.
In one embodiment the disclosure provides a compound having improved inhibitory
or pharmacokinetic properties, including enhanced activity against development of viral
resistance, improved oral bioavailability, greater potency (for example, in inhibiting HCV
activity) or extended effective half-life in vivo. Certain compounds of the disclosure may
have fewer side effects, less complicated dosing schedules, or be orally active.
DETAILED DESCRIPTION
nce will now be made in detail to n embodiments of the disclosure,
examples of which are rated in the accompanying structures and formulas. While the
disclosure will be described in conjunction with the enumerated ments, it will be
understood that they are not intended to limit the disclosure to those embodiments. On the
contrary, the disclosure is intended to cover all alternatives, modifications, and equivalents,
which may be included within the scope of the present disclosure as defined by the
embodiments.
Compounds
The compounds of the disclosure exclude compounds fore known. r, it
is within the disclosure to use compounds that previously were not known to have antiviral
properties for antiviral purposes (e.g. to e an anti-viral effect in an animal). With
respect to the United States, the compounds or compositions herein exclude compounds that
are anticipated under 35 USC §102 or that are obvious under 35 USC §103.
er a compound described herein is substituted with more than one of the same
designated group, e.g., "R1" or "A3", then it will be understood that the groups may be the
same or different, i.e., each group is independently selected.
“Absent” – Some groups are defined such that they can be absent. When a group is
absent it becomes a bond connector. The two groups that would ise be connected to
that absent group are ted to each other through a bond.
The “P” groups (e.g. P1a and P1b) defined for a (I) herein have one bond to a
-C(=O)- of formula (I) and one bond to a W1a group. It is to be understood that a nitrogen of
the P group is connected to the -C(=O)- group of formula (I) and that a carbon of the P group
is connected to the W1a group.
Y5 H
N N
N N
H X5
In the W1a group a Y5 group is present. When that Y5 group is defined as -O-CH2-, or
-CH2-O- group, those Y5 groups have a directionality. The Y5 group is connected to the W1a
group in the same left to right directionality that each is drawn. So for example, when Y5 is
-O-CH2-, the directly following ure is intended:
For example, when Y5 is -CH2-O-, the directly ing structure is intended:
In the structure I, the W1a group has a left-to-right directionality as depicted in I and
W1a as drawn.
E1a-V1a –C(=O)-P1a -W1a -P1b-C(=O)-V1b-E1b (I)
wherein:
W1a is
Y5 H
N N
N N
H X5
For example, the P1a group is ted to the imidazole group of W1a, and the P1b
group is ted to the pentacyclic ring system of W1a.
“Alkyl” is C1-C18 hydrocarbon containing normal, secondary, tertiary or cyclic
carbon atoms. Examples are methyl (Me, -CH3), ethyl (Et, -CH2CH3), 1-propyl (n-Pr, npropyl
, -CH2CH2CH3), 2-propyl (i-Pr, i-propyl, -CH(CH3)2), 1-butyl (n-Bu, n-butyl,
-CH2CH2CH2CH3), 2-methylpropyl (i-Bu, i-butyl, -CH2CH(CH3)2), 2-butyl (s-Bu, sbutyl
, -CH(CH3)CH2CH3), 2-methylpropyl (t-Bu, l, -C(CH3)3), 1-pentyl (n-pentyl,
-CH2CH2CH2CH2CH3), 2-pentyl (-CH(CH3)CH2CH2CH3), 3-pentyl (-CH(CH2CH3)2), 2-
methylbutyl 3)2CH2CH3), 3-methylbutyl (-CH(CH3)CH(CH3)2), yl
butyl (-CH2CH2CH(CH3)2), 2-methylbutyl (-CH2CH(CH3)CH2CH3), 1-hexyl
(-CH2CH2CH2CH2CH2CH3), 2-hexyl (-CH(CH3)CH2CH2CH2CH3), 3-hexyl
(-CH(CH2CH3)(CH2CH2CH3)), 2-methylpentyl (-C(CH3)2CH2CH2CH3), 3-methyl
pentyl (-CH(CH3)CH(CH3)CH2CH3), 4-methylpentyl (-CH(CH3)CH2CH(CH3)2), 3-
methylpentyl (-C(CH3)(CH2CH3)2), 2-methylpentyl (-CH(CH2CH3)CH(CH3)2), 2,3-
ylbutyl (-C(CH3)2CH(CH3)2), 3,3-dimethylbutyl (-CH(CH3)C(CH3)3, and
cyclopropylmethyl .
“Alkenyl” is C2-C18 hydrocarbon containing , ary, tertiary or cyclic
carbon atoms with at least one site of unsaturation, i.e. a carbon-carbon, sp2 double bond.
Examples include, but are not limited to, ethylene or vinyl (-CHCH2), allyl (-CH2CHCH2),
cyclopentenyl (-C5H7), and 5-hexenyl (-CH2 CH2CHCH2).
“Alkynyl” is C2-C18 hydrocarbon containing normal, secondary, ry or cyclic
carbon atoms with at least one site of unsaturation, i.e. a carbon-carbon, sp triple bond.
Examples include, but are not limited to, acetylenic (-CCH) and propargyl (-CH2CCH).
“Alkylene” refers to a saturated, branched or straight chain or cyclic hydrocarbon
radical of 1-18 carbon atoms, and having two monovalent radical centers derived by the removal
of two hydrogen atoms from the same or two ent carbon atoms of a parent alkane. Typical
alkylene radicals include, but are not limited to, methylene (-CH2-) 1,2-ethyl (-CH2CH2-), 1,3-
propyl (-CH2CH2CH2-), 1,4-butyl (-CH2CH2CH2CH2-), and the like.
“Alkenylene” refers to an unsaturated, branched or straight chain or cyclic hydrocarbon
radical of 2-18 carbon atoms, and having two monovalent radical centers derived by the removal
of two hydrogen atoms from the same or two different carbon atoms of a parent alkene. Typical
alkenylene ls include, but are not limited to, 1,2-ethylene (-CHCH-).
“Alkynylene” refers to an unsaturated, branched or straight chain or cyclic hydrocarbon
radical of 2-18 carbon atoms, and having two monovalent radical centers derived by the removal
of two hydrogen atoms from the same or two different carbon atoms of a parent alkyne. Typical
lene radicals include, but are not limited to, acetylene (-CC-), propargyl (-CH2CC-),
and 4-pentynyl (-CH2CH2CH2CCH).
The term "alkoxy" or oxy,” as used herein, refers to an alkyl group ed to
the parent molecular moiety h an oxygen atom.
The term "alkoxycarbonyl," as used herein, refers to an alkoxy group attached to the
parent lar moiety through a carbonyl group.
The term "cycloalkyl," as used herein, refers to a saturated clic, hydrocarbon
ring system having three to seven carbon atoms and zero heteroatoms. Representative
examples of cycloalkyl groups include, but are not limited to, cyclopropyl, cyclopentyl, and
cyclohexyl. The cycloalkyl groups of the present disclosure are optionally tuted with
one, two, three, four, or five substituents independently selected from alkoxy, alkyl, aryl,
cyano, halo, haloalkoxy, haloalkyl, heterocyclyl, hydroxy, hydroxyalkyl, nitro, and -NRxRy
wherein the aryl and the heterocyclyl are further optionally substituted with one, two, or three
tuents independently selected from alkoxy, alkyl, cyano, halo, haloalkoxy, haloalkyl,
hydroxy, and nitro.
The term “cycloalkylcarbonyl,” as used herein, refers to a cycloalkyl group attached
to the parent molecular moiety through a carbonyl group.
The term "cycloalkyloxy," as used herein, refers to a cycloalkyl group ed to the
parent molecular moiety through an oxygen atom.
The term “cycloalkyloxycarbonyl,” as used herein, refers to a lkyloxy group
attached to the parent molecular moiety through a carbonyl group.
“Aryl” means a monovalent ic arbon radical of 6-20 carbon atoms
derived by the removal of one hydrogen atom from a single carbon atom of a parent aromatic
ring system. Typical aryl groups include, but are not limited to, radicals derived from
benzene, substituted benzene, naphthalene, anthracene, biphenyl, and the like.
“Arylalkyl” refers to an acyclic alkyl radical in which one of the hydrogen atoms
bonded to a carbon atom, typically a al or sp3 carbon atom, is ed with an aryl
radical. Typical arylalkyl groups include, but are not limited to, benzyl, ylethanyl,
naphthylmethyl, 2-naphthylethanyl, naphthobenzyl, 2-naphthophenylethanyl and the
like. The arylalkyl group comprises 6 to 20 carbon atoms, e.g., the alkyl moiety, including
alkanyl, alkenyl or alkynyl groups, of the arylalkyl group is 1 to 6 carbon atoms and the aryl
moiety is 5 to 14 carbon atoms.
“Substituted , “substituted aryl”, and “substituted arylalkyl” mean alkyl, aryl,
and arylalkyl respectively, in which one or more hydrogen atoms are each ndently
replaced with a non-hydrogen substituent. Typical tuents include, but are not limited
to: halo (e.g. F, Cl, Br, I), -R, -OR, -SR, -NR2, -CF3, -CCl3, -OCF3, -CN, -NO2,
-N(R)C(=O)R, R, -OC(=O)R, -C(O)OR, -C(=O)NRR, -S(=O)R, -S(=O)2OR, -S(=O)2R,
-OS(=O)2OR, -S(=O)2NRR, and each R is independently -H, alkyl, aryl, arylalkyl, or
heterocycle. Alkylene, alkenylene, and alkynylene groups may also be similarly substituted.
The term “optionally substituted” in reference to a particular moiety of the compound
of formula I, (e.g., an optionally substituted aryl group) refers to a moiety having 0, 1, 2, or
more substituents.
The symbol “-----“ in a ring structure means that a bond is a single or double bond. In
E L E L E L
D L L
a miting example, can be D or D .
“Haloalkyl” as used herein includes an alkyl group substituted with one or more
halogens (e.g. F, Cl, Br, or I). Representative examples of haloalkyl include trifluoromethyl,
2,2,2-trifluoroethyl, and 2,2,2-trifluoro(trifluoromethyl)ethyl.
“Heterocycle” or “heterocyclyl” as used herein includes by way of example and not
limitation these heterocycles described in Paquette, Leo A.; Principles of Modern
Heterocyclic Chemistry (W.A. Benjamin, New York, 1968), particularly Chapters 1, 3, 4, 6,
7, and 9; The try of Heterocyclic Compounds, A Series of Monographs” (John Wiley
& Sons, New York, 1950 to present), in particular Volumes 13, 14, 16, 19, and 28; and J.
Am. Chem. Soc. (1960) 82:5566. In one specific ment, “heterocycle” es a
“carbocycle” as defined herein, wherein one or more (e.g. 1, 2, 3, or 4) carbon atoms have
been ed with a heteroatom (e.g. O, N, or S). The term cycle also includes
“heteroaryl” which is a heterocycle wherein at least one cyclic rings is aromatic.
Examples of heterocycles include by way of e and not tion pyridyl,
dihydropyridyl, tetrahydropyridyl (piperidyl), thiazolyl, tetrahydrothiophenyl, sulfur oxidized
tetrahydrothiophenyl, dinyl, furanyl, thienyl, yl, pyrazolyl, imidazolyl, tetrazolyl,
benzofuranyl, thianaphthalenyl, indolyl, indolenyl, quinolinyl, isoquinolinyl, benzimidazolyl,
piperidinyl, 4-piperidonyl, pyrrolidinyl, 2-pyrrolidonyl, pyrrolinyl, tetrahydrofuranyl,
tetrahydroquinolinyl, tetrahydroisoquinolinyl, decahydroquinolinyl, octahydroisoquinolinyl,
azocinyl, triazinyl, 6H-1,2,5-thiadiazinyl, 2H,6H-1,5,2-dithiazinyl, thienyl, thianthrenyl,
pyranyl, isobenzofuranyl, chromenyl, xanthenyl, phenoxathinyl, 2H-pyrrolyl, isothiazolyl,
isoxazolyl, pyrazinyl, pyridazinyl, indolizinyl, isoindolyl, 3H-indolyl, 1H-indazolyl, purinyl,
4H-quinolizinyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl,
pteridinyl, 4H-carbazolyl, carbazolyl, β-carbolinyl, thridinyl, acridinyl, pyrimidinyl,
phenanthrolinyl, phenazinyl, phenothiazinyl, furazanyl, azinyl, isochromanyl,
chromanyl, imidazolidinyl, imidazolinyl, pyrazolidinyl, pyrazolinyl, zinyl, indolinyl,
isoindolinyl, quinuclidinyl, morpholinyl, oxazolidinyl, benzotriazolyl, benzisoxazolyl,
oxindolyl, benzoxazolinyl, oyl, and bis-tetrahydrofuranyl:
O .
By way of e and not limitation, carbon bonded cycles are bonded at
position 2, 3, 4, 5, or 6 of a pyridine, position 3, 4, 5, or 6 of a pyridazine, position 2, 4, 5, or
6 of a pyrimidine, position 2, 3, 5, or 6 of a pyrazine, position 2, 3, 4, or 5 of a furan,
tetrahydrofuran, thiofuran, thiophene, pyrrole or tetrahydropyrrole, position 2, 4, or 5 of an
oxazole, imidazole or thiazole, position 3, 4, or 5 of an isoxazole, pyrazole, or isothiazole,
position 2 or 3 of an aziridine, position 2, 3, or 4 of an azetidine, position 2, 3, 4, 5, 6, 7, or 8
of a quinoline or position 1, 3, 4, 5, 6, 7, or 8 of an noline. Still more lly, carbon
bonded heterocycles include 2-pyridyl, 3-pyridyl, 4-pyridyl, 5-pyridyl, 6-pyridyl, 3-
pyridazinyl, 4-pyridazinyl, 5-pyridazinyl, 6-pyridazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-
pyrimidinyl, 6-pyrimidinyl, 2-pyrazinyl, 3-pyrazinyl, 5-pyrazinyl, 6-pyrazinyl, 2-thiazolyl, 4-
thiazolyl, or 5-thiazolyl.
By way of example and not limitation, nitrogen bonded heterocycles are bonded at
position 1 of an aziridine, ine, pyrrole, pyrrolidine, oline, 3-pyrroline, imidazole,
imidazolidine, 2-imidazoline, 3-imidazoline, le, pyrazoline, 2-pyrazoline, 3-
pyrazoline, dine, piperazine, indole, indoline, 1H-indazole, position 2 of a isoindole, or
isoindoline, position 4 of a line, and position 9 of a ole, or β-carboline. Still
more typically, nitrogen bonded heterocycles include 1-aziridyl, 1-azetedyl, 1-pyrrolyl, 1-
imidazolyl, 1-pyrazolyl, and 1-piperidinyl.
“Carbocycle” refers to a saturated, unsaturated or aromatic ring having up to about 25
carbon atoms. Typically, a carbocycle has about 3 to 7 carbon atoms as a monocycle, about 7
to 12 carbon atoms as a bicycle, and up to about 25 carbon atoms as a polycycle. Monocyclic
carbocycles typically have 3 to 6 ring atoms, still more typically 5 or 6 ring atoms. Bicyclic
carbocycles typically have 7 to 12 ring atoms, e.g., arranged as a o [4,5], [5,5], [5,6] or
[6,6] system, or 9 or 10 ring atoms arranged as a bicyclo [5,6] or [6,6] system. The term
carbocycle includes “cycloalkyl” which is a saturated or unsaturated carbocycle. Examples
of monocyclic carbocycles include cyclopropyl, cyclobutyl, entyl, 1-cyclopentenyl,
opentenyl, 1-cyclopentenyl, cyclohexyl, 1-cyclohexenyl, 1-cyclohexenyl, 1-
exenyl, phenyl, spiryl and naphthyl.
The term “amino,” as used herein, refers to -NH2.
The term “chiral” refers to molecules which have the property of nonsuperimposability
of the mirror image partner, while the term “achiral” refers to molecules
which are superimposable on their mirror image partner.
The term “stereoisomers” refers to compounds which have identical chemical
constitution, but differ with regard to the arrangement of the atoms or groups in space.
“Diastereomer” refers to a stereoisomer with two or more centers of chirality and
whose molecules are not mirror images of one another. Diastereomers have different
physical properties, e.g., g points, boiling points, al properties, and reactivities.
Mixtures of diastereomers may separate under high resolution analytical procedures such as
electrophoresis and chromatography.
“Enantiomers” refer to two stereoisomers of a compound which are non-
superimposable mirror images of one another.
The term “treatment” or “treating,” to the extent it relates to a disease or condition
includes preventing the disease or condition from occurring, inhibiting the disease or
condition, eliminating the disease or ion, and/or relieving one or more ms of the
disease or condition.
Stereochemical definitions and conventions used herein generally follow S. P.
Parker, Ed., McGraw-Hill Dictionary of Chemical Terms (1984) McGraw-Hill Book
Company, New York; and Eliel, E. and Wilen, S., Stereochemistry of Organic Compounds
(1994) John Wiley & Sons, Inc., New York. Many organic compounds exist in optically
active forms, i.e., they have the ability to rotate the plane of plane-polarized light. In
describing an optically active compound, the prefixes (D and L) or (R and S) are used to
denote the absolute configuration of the molecule about its chiral center(s). The es d
and l or (+) and (-) are employed to designate the sign of rotation of plane-polarized light by
the compound, with (-) or 1 meaning that the compound is levorotatory. A compound
prefixed with (+) or d is rotatory. For a given chemical structure, these stereoisomers
are identical except that they are mirror images of one another. A specific stereoisomer may
also be referred to as an enantiomer, and a mixture of such isomers is often called an
enantiomeric mixture. A 50:50 mixture of enantiomers is referred to as a racemic mixture or
a racemate, which may occur where there has been no selection or stereospecificity in a
chemical reaction or process. The terms “racemic mixture” and “racemate” refer to an
equimolar mixture of two enantiomeric species, devoid of optical activity. The disclosure
includes all stereoisomers of the compounds described .
Prodrugs
The term “prodrug” as used herein refers to any compound that when administered to
a ical system generates a compound of the disclosure that inhibits HCV activity (“the
active inhibitory compound”). The compound may be formed from the prodrug as a result of:
(i) spontaneous chemical reaction(s), (ii) enzyme catalyzed chemical reaction(s), (iii)
photolysis, and/or (iv) metabolic al reaction(s).
“Prodrug moiety” refers to a labile onal group which separates from the active
inhibitory compound during metabolism, systemically, inside a cell, by hydrolysis, tic
cleavage, or by some other process (Bundgaard, Hans, “Design and Application of Prodrugs” in
A ok of Drug Design and Development (1991), P. Krogsgaard-Larsen and H.
Bundgaard, Eds. Harwood Academic hers, pp. 113-191). Enzymes which are capable
of an enzymatic activation ism with the prodrug compounds of the disclosure e,
but are not limited to, amidases, esterases, microbial enzymes, phospholipases,
cholinesterases, and phosphases. Prodrug moieties can serve to enhance solubility,
absorption and lipophilicity to ze drug delivery, bioavailability and efficacy. A
prodrug moiety may include an active metabolite or drug itself.
Exemplary prodrug moieties include the hydrolytically sensitive or labile
acyloxymethyl esters CH2OC(=O)R99 and acyloxymethyl carbonates CH2OC(=O)OR99
where R99 is C1C6 alkyl, C1C6 substituted alkyl, C6C20 aryl or C6C20 tuted aryl.
The acyloxyalkyl ester was first used as a prodrug strategy for ylic acids and then
applied to phosphates and phosphonates by Farquhar et al. (1983) J. Pharm. Sci. 72: 324;
also US Patent Nos. 4816570, 4968788, 5663159 and 5792756. Subsequently, the
acyloxyalkyl ester was used to deliver phosphonic acids across cell membranes and to
enhance oral bioavailability. A close variant of the acyloxyalkyl ester, the
carbonyloxyalkyl ester (carbonate), may also enhance oral bioavailability as a prodrug
moiety in the compounds of the combinations of the disclosure. An ary
acyloxymethyl ester is pivaloyloxymethoxy, (POM) CH2OC(=O)C(CH3)3. An exemplary
acyloxymethyl carbonate g moiety is pivaloyloxymethylcarbonate (POC)
CH2OC(=O)OC(CH3)3.
Aryl esters of phosphorus groups, especially phenyl esters, are reported to enhance
oral bioavailability (De Lombaert et al. (1994) J. Med. Chem. 37: 498). Phenyl esters
containing a ylic ester ortho to a phosphate have also been described (Khamnei and
Torrence, (1996) J. Med. Chem. 39:4109-4115). Benzyl esters are reported to generate
parent phosphonic acids. In some cases, substituents at the ortho- or para- position may
accelerate the hydrolysis. Benzyl analogs with an acylated phenol or an alkylated phenol
may generate the phenolic compound through the action of s, e.g., esterases, oxidases,
etc., which in turn undergoes cleavage at the benzylic CO bond to generate phosphoric acid
and a quinone methide intermediate. Examples of this class of prodrugs are described by
Mitchell et al. (1992) J. Chem. Soc. Perkin Trans. II 2345; Glazier WO 91/19721. Still
other benzylic prodrugs have been described containing a carboxylic containing group
attached to the benzylic methylene (Glazier WO 91/19721). Thio-containing gs are
ed to be useful for the intracellular delivery of phosphonate drugs. These proesters
contain an ethylthio group in which the thiol group is either esterified with an acyl group or
combined with another thiol group to form a disulfide. rification or reduction of the
disulfide generates the free thio intermediate which subsequently breaks down to the
phosphoric acid and fide (Puech et al. (1993) Antiviral Res., 22: 155-174; Benzaria et
al. (1996) J. Med. Chem. 39: 4958).
Protecting Groups
In the context of the present disclosure, protecting groups include prodrug moieties
and chemical protecting groups.
“Protecting group” refers to a moiety of a compound that masks or alters the
properties of a functional group or the ties of the compound as a whole. Chemical
protecting groups and strategies for protection/deprotection are well known in the art. See
e.g., Protective Groups in Organic try, ra W. Greene, John Wiley & Sons,
Inc., New York, 1991. Protecting groups are often utilized to mask the reactivity of certain
functional groups, to assist in the efficiency of desired chemical reactions, e.g., making and
breaking chemical bonds in an ordered and planned fashion. tion of functional groups
of a compound alters other physical properties besides the reactivity of the protected
functional group, such as the polarity, lipophilicity (hydrophobicity), and other properties
which can be measured by common analytical tools. ally protected ediates
may themselves be biologically active or inactive.
Protected compounds may also exhibit d, and in some cases, optimized
properties in vitro and in vivo, such as passage through cellular membranes and ance to
enzymatic degradation or sequestration. In this role, protected compounds with intended
therapeutic effects may be referred to as prodrugs. Another function of a protecting group is
to convert the parental drug into a prodrug, whereby the parental drug is released upon
conversion of the g in vivo. Because active prodrugs may be absorbed more
effectively than the parental drug, gs may possess r potency in vivo than the
parental drug. Protecting groups are removed either in vitro, in the instance of chemical
intermediates, or in vivo, in the case of prodrugs. With chemical intermediates, it is not
particularly important that the resulting products after deprotection, e.g., alcohols, be
logically acceptable, although in general it is more desirable if the products are
pharmacologically innocuous.
Protecting groups are available, commonly known and used, and are optionally used
to prevent side reactions with the protected group during synthetic procedures, i.e. routes or
methods to prepare the compounds of the disclosure. For the most part the decision as to
which groups to protect, when to do so, and the nature of the chemical protecting group “PG”
will be dependent upon the try of the reaction to be protected against (e.g., ,
basic, oxidative, reductive or other conditions) and the intended direction of the synthesis.
PGs do not need to be, and generally are not, the same if the compound is substituted with
le PGs. In general, PG will be used to protect functional groups such as carboxyl,
hydroxyl, thio, or amino groups and to thus prevent side reactions or to otherwise facilitate
the synthetic efficiency. The order of deprotection to yield free deprotected groups is
dependent upon the intended direction of the synthesis and the reaction conditions to be
encountered, and may occur in any order as determined by the artisan.
Various functional groups of the compounds of the disclosure may be ted. For
example, protecting groups for –OH groups er hydroxyl, carboxylic acid, phosphonic
acid, or other ons) include “ether- or ester-forming groups”. Ether- or ester-forming
groups are capable of functioning as chemical protecting groups in the synthetic schemes set
forth herein. However, some hydroxyl and thio protecting groups are neither ether- nor esterforming
groups, as will be understood by those skilled in the art, and are included with
amides, discussed below.
A very large number of hydroxyl protecting groups and amide-forming groups and
corresponding chemical cleavage reactions are described in Protective Groups in Organic
Synthesis, Theodora W. Greene (John Wiley & Sons, Inc., New York, 1991, ISBN 0
62301-6) (“Greene”). See also Kocienski, Philip J.; Protecting Groups (Georg Thieme
Verlag art, New York, 1994), which is orated by reference in its entirety herein.
In particular Chapter 1, Protecting Groups: An Overview, pages 1-20, Chapter 2, Hydroxyl
Protecting Groups, pages 21-94, r 3, Diol Protecting Groups, pages 95-117, Chapter 4,
Carboxyl Protecting Groups, pages 118-154, Chapter 5, Carbonyl Protecting Groups, pages
155-184. For protecting groups for carboxylic acid, phosphonic acid, onate, sulfonic
acid and other protecting groups for acids see Greene as set forth below.
By way of example and not limitation, les described herein may recursive
tuents in certain embodiments. lly, each of these may independently occur 20,
19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, or 0, times in a given
embodiment. More typically, each of these may independently occur 12 or fewer times in a
given embodiment. er a compound described herein is substituted with more than
one of the same designated group, e.g., “R1” or “R3”, then it will be understood that the
groups may be the same or different, i.e., each group is independently selected. Wavy lines
te the site of covalent bond attachments to the adjoining , moieties, or atoms.
In one embodiment of the disclosure, the compound is in an isolated and purified
form. Generally, the term “isolated and purified” means that the compound is substantially
free from biological materials (e.g. blood, tissue, cells, etc.). In one specific embodiment of
the sure, the term means that the nd or conjugate of the disclosure is at least
about 50 wt.% free from biological materials; in another ic embodiment, the term
means that the compound or conjugate of the disclosure is at least about 75 wt.% free from
biological materials; in another specific embodiment, the term means that the compound or
conjugate of the disclosure is at least about 90 wt.% free from biological materials; in another
specific embodiment, the term means that the compound or conjugate of the disclosure is at
least about 98 wt.% free from biological materials; and in another embodiment, the term
means that the compound or conjugate of the disclosure is at least about 99 wt.% free from
biological materials. In another specific embodiment, the disclosure provides a compound or
conjugate of the disclosure that has been synthetically prepared (e.g., ex vivo).
Stereoisomers
The nds of the sure may have chiral centers, e.g., chiral carbon or
phosphorus atoms. The compounds of the disclosure thus include racemic mixtures of all
stereoisomers, including enantiomers, diastereomers, and atropisomers. In addition, the
compounds of the disclosure include ed or resolved optical s at any or all
asymmetric, chiral atoms. In other words, the chiral centers apparent from the ions are
provided as the chiral isomers or racemic mixtures. Both racemic and diastereomeric
mixtures, as well as the individual optical isomers isolated or synthesized, substantially free
of their enantiomeric or diastereomeric partners, are all within the scope of the disclosure.
The racemic mixtures are separated into their dual, substantially lly pure isomers
through well-known techniques such as, for example, the tion of diastereomeric salts
formed with optically active ts, e.g., acids or bases followed by conversion back to the
optically active substances. In most instances, the desired optical isomer is synthesized by
means of stereospecific reactions, beginning with the appropriate stereoisomer of the desired
starting material.
The nds of the disclosure can also exist as tautomeric isomers in certain cases.
Although only one tautomer may be depicted, all such forms are contemplated within the
scope of the disclosure. For example, ene-amine tautomers can exist for purine, pyrimidine,
imidazole, guanidine, amidine, and ole systems and all their possible tautomeric forms
are within the scope of the disclosure.
Salts and Hydrates
Examples of physiologically or pharmaceutically acceptable salts of the nds
of the disclosure include salts derived from an appropriate base, such as an alkali metal (for
example, sodium), an alkaline earth metal (for example, magnesium), ammonium and NX4+
(wherein X is C1-C4 alkyl). logically acceptable salts of a hydrogen atom or an amino
group include salts of organic carboxylic acids such as , benzoic, lactic, fumaric,
tartaric, maleic, malonic, malic, isethionic, lactobionic and succinic acids; organic ic
acids, such as methanesulfonic, ethanesulfonic, benzenesulfonic and p-toluenesulfonic acids;
and inorganic acids, such as hloric, sulfuric, phosphoric and sulfamic acids.
Physiologically acceptable salts of a compound of a hydroxy group include the anion of said
compound in combination with a suitable cation such as Na+ and NX4+ (wherein X is
independently selected from H or a C1C4 alkyl group).
For therapeutic use, salts of active ingredients of the compounds of the disclosure will
typically be physiologically acceptable, i.e. they will be salts derived from a physiologically
able acid or base. However, salts of acids or bases which are not physiologically
acceptable may also find use, for example, in the preparation or purification of a
physiologically acceptable compound. All salts, whether or not d from a
physiologically acceptable acid or base, are within the scope of the present disclosure.
Metal salts typically are prepared by reacting the metal hydroxide with a compound of
this disclosure. Examples of metal salts which are prepared in this way are salts containing
Li+, Na+, and K+. A less soluble metal salt can be precipitated from the solution of a more
soluble salt by on of the suitable metal compound.
In addition, salts may be formed from acid on of certain organic and inorganic
acids, e.g., HCl, HBr, H2SO4, H3PO4 or organic sulfonic acids, to basic centers, typically
, or to acidic groups. Finally, it is to be understood that the compositions herein
comprise compounds of the disclosure in their un-ionized, as well as zwitterionic form, and
combinations with stoichiometric amounts of water as in hydrates.
Also ed within the scope of this disclosure are the salts of the parental
nds with one or more amino acids. Any of the natural or unnatural amino acids are
suitable, especially the lly-occurring amino acids found as protein components,
although the amino acid typically is one bearing a side chain with a basic or acidic group,
e.g., lysine, arginine or glutamic acid, or a neutral group such as glycine, serine, threonine,
alanine, isoleucine, or leucine.
Methods of Inhibition of HCV
Another aspect of the disclosure relates to methods of inhibiting the activity of HCV
comprising the step of treating a sample suspected of containing HCV with a compound or
composition of the disclosure.
Compounds of the disclosure may act as inhibitors of HCV, as intermediates for such
inhibitors or have other ies as bed below. The inhibitors will lly bind to
locations on the surface or in a cavity of the liver. nds binding in the liver may bind
with varying degrees of reversibility. Those compounds g substantially irreversibly are
ideal candidates for use in this method of the disclosure. Once labeled, the ntially
irreversibly binding compounds are useful as probes for the detection of HCV. Accordingly,
the sure relates to methods of detecting NS3 in a sample suspected of ning HCV
comprising the steps of: treating a sample suspected of containing HCV with a composition
comprising a compound of the disclosure bound to a label; and observing the effect of the
sample on the ty of the label. Suitable labels are well known in the diagnostics field and
include stable free radicals, fluorophores, radioisotopes, enzymes, chemiluminescent groups
and chromogens. The compounds herein are labeled in conventional fashion using functional
groups such as hydroxyl or amino. In one embodiment the sure provides a compound
of any one of formulae (I) and (A1)-(A4) that comprises or that is bound or linked to one or
more detectable labels. Within the context of the disclosure samples suspected of containing
HCV include natural or man-made materials such as living organisms; tissue or cell cultures;
biological samples such as biological material samples (blood, serum, urine, cerebrospinal
fluid, tears, sputum, saliva, tissue samples, and the like); laboratory samples; food, water, or
air samples; bioproduct samples such as ts of cells, particularly recombinant cells
synthesizing a desired glycoprotein; and the like. Typically the sample will be suspected of
containing HCV. Samples can be ned in any medium including water and organic
solvent/water mixtures. Samples include living organisms such as humans, and man made
materials such as cell cultures.
The treating step of the sure comprises adding the compound of the disclosure
to the sample or it comprises adding a precursor of the composition to the sample. The
addition step ses any method of administration as described above.
If desired, the activity of HCV after application of the compound can be observed by
any method ing direct and indirect methods of detecting HCV activity. Quantitative,
qualitative, and semiquantitative s of determining HCV activity are all contemplated.
lly one of the screening s described above are applied, however, any other
method such as observation of the physiological properties of a living organism are also
applicable.
Many organisms contain HCV. The compounds of this disclosure are useful in the
treatment or laxis of conditions associated with HCV activation in animals or in man.
However, in screening compounds capable of inhibiting HCV activity it should be
kept in mind that the results of enzyme assays may not always correlate with cell culture
assays. Thus, a cell based assay should lly be the primary screening tool.
Pharmaceutical ations
The compounds of this disclosure are formulated with conventional carriers and
excipients, which will be selected in accord with ordinary practice. Tablets will contain
excipients, glidants, fillers, s and the like. Aqueous formulations are prepared in sterile
form, and when intended for delivery by other than oral stration generally will be
isotonic. All formulations will optionally contain excipients such as those set forth in the
Handbook of Pharmaceutical Excipients (1986). Excipients include ascorbic acid and other
antioxidants, chelating agents such as EDTA, carbohydrates such as dextrin,
hydroxyalkylcellulose, hydroxyalkylmethylcellulose, c acid and the like. The pH of the
ations ranges from about 3 to about 11, but is ordinarily about 7 to 10. Typically, the
compound will be stered in a dose from 0.01 milligrams to 2 grams. In one
embodiment, the dose will be from about 10 milligrams to 450 milligrams. In r
embodiment, the dosage will be from about 25 to about 250 rams. In another
embodiment, the dosage will be about 50 or 100 milligrams. In one embodiment, the dosage
will be about 100 milligrams. It is plated that the compound may be administered
once, twice or three times a day.
While it is possible for the active ingredients to be administered alone it may be
preferable to present them as pharmaceutical formulations. The formulations, both for
veterinary and for human use, of the disclosure comprise at least one active ingredient, as
above defined, together with one or more acceptable carriers therefor and optionally other
therapeutic ingredients. The carrier(s) must be “acceptable” in the sense of being compatible
with the other ingredients of the formulation and physiologically innocuous to the recipient
thereof.
The formulations include those suitable for the foregoing administration routes. The
formulations may conveniently be presented in unit dosage form and may be prepared by any
of the methods well known in the art of pharmacy. Techniques and formulations generally
are found in ton’s Pharmaceutical Sciences (Mack Publishing Co., Easton, PA). Such
methods include the step of bringing into association the active ient with the carrier
which constitutes one or more accessory ingredients. In general the formulations are
prepared by mly and intimately bringing into association the active ient with
liquid carriers or finely divided solid carriers or both, and then, if necessary, shaping the
product.
Formulations of the present disclosure suitable for oral administration may be
presented as discrete units such as capsules, cachets or tablets each containing a
predetermined amount of the active ingredient; as a powder or granules; as a solution or a
suspension in an aqueous or ueous liquid; or as an oil-in-water liquid emulsion or a
water-in-oil liquid emulsion. The active ingredient may also be stered as a bolus,
electuary or paste.
A tablet is made by compression or molding, optionally with one or more ory
ingredients. Compressed tablets may be prepared by compressing in a suitable machine the
active ingredient in a free-flowing form such as a powder or granules, optionally mixed with
a , lubricant, inert diluent, preservative, surface active or dispersing agent. Molded
tablets may be made by molding in a suitable machine a mixture of the powdered active
ingredient moistened with an inert liquid diluent. The tablets may optionally be coated or
scored and ally are formulated so as to provide slow or controlled release of the active
ingredient therefrom.
For administration to the eye or other al tissues e.g., mouth and skin, the
formulations are preferably applied as a topical ointment or cream containing the active
ingredient(s) in an amount of, for example, 0.075 to 20% w/w (including active ingredient(s)
in a range between 0.1% and 20% in increments of 0.1% w/w such as 0.6% w/w, 0.7% w/w,
etc.), preferably 0.2 to 15% w/w and most preferably 0.5 to 10% w/w. When formulated in
an ointment, the active ingredients may be employed with either a paraffinic or a watermiscible
nt base. Alternatively, the active ingredients may be formulated in a cream
with an oil-in-water cream base.
If desired, the aqueous phase of the cream base may include, for example, at least
% w/w of a polyhydric alcohol, i.e. an alcohol having two or more hydroxyl groups such
as propylene glycol, butane 1,3-diol, mannitol, sorbitol, ol and polyethylene glycol
(including PEG 400) and es thereof. The topical formulations may desirably include a
compound which enhances absorption or ation of the active ingredient h the skin
or other affected areas. Examples of such dermal penetration enhancers include dimethyl
sulphoxide and related s.
The oily phase of the emulsions of this disclosure may be constituted from known
ingredients in a known manner. While the phase may comprise merely an emulsifier
(otherwise known as an emulgent), it desirably comprises a mixture of at least one emulsifier
with a fat or an oil or with both a fat and an oil. Preferably, a hydrophilic emulsifier is
included together with a lipophilic fier which acts as a stabilizer. It is also red to
include both an oil and a fat. Together, the emulsifier(s) with or t stabilizer(s) make
up the so-called emulsifying wax, and the wax together with the oil and fat make up the ed
fying ointment base which forms the oily dispersed phase of the cream
formulations.
Emulgents and emulsion stabilizers suitable for use in the formulation of the
disclosure include Tween® 60, Span® 80, cetostearyl alcohol, benzyl alcohol, myristyl
alcohol, glyceryl mono-stearate and sodium lauryl sulfate.
The choice of suitable oils or fats for the formulation is based on achieving the
desired cosmetic properties. The cream should ably be a non-greasy, non-staining and
washable product with suitable consistency to avoid leakage from tubes or other containers.
Straight or branched chain, mono- or c alkyl esters such as di-isoadipate, isocetyl
stearate, propylene glycol diester of coconut fatty acids, pyl myristate, decyl oleate,
isopropyl palmitate, butyl stearate, 2-ethylhexyl palmitate or a blend of branched chain esters
known as Crodamol CAP may be used, the last three being preferred esters. These may be
used alone or in combination depending on the properties required. Alternatively, high
melting point lipids such as white soft paraffin and/or liquid paraffin or other mineral oils are
used.
Pharmaceutical formulations ing to the present sure comprise one or
more nds of the disclosure together with one or more pharmaceutically acceptable
carriers or excipients and optionally other therapeutic agents. Pharmaceutical formulations
containing the active ingredient may be in any form suitable for the intended method of
administration. When used for oral use for example, tablets, troches, lozenges, aqueous or oil
suspensions, dispersible powders or granules, emulsions, hard or soft capsules, syrups or
elixirs may be prepared. Compositions intended for oral use may be prepared according to
any method known to the art for the manufacture of ceutical compositions and such
compositions may contain one or more agents ing sweetening agents, flavoring agents,
coloring agents and preserving agents, in order to provide a palatable preparation. Tablets
containing the active ingredient in admixture with xic pharmaceutically acceptable
excipient which are suitable for manufacture of tablets are acceptable. These excipients may
be, for example, inert diluents, such as calcium or sodium carbonate, lactose, lactose
drate, croscarmellose sodium, povidone, calcium or sodium phosphate; granulating
and disintegrating agents, such as maize starch, or alginic acid; binding agents, such as
cellulose, microcrystalline ose, starch, gelatin or acacia; and ating , such as
magnesium stearate, stearic acid or talc. Tablets may be uncoated or may be coated by
known techniques ing microencapsulation to delay disintegration and tion in the
gastrointestinal tract and thereby e a sustained action over a longer period. For
example, a time delay material such as glyceryl monostearate or glyceryl distearate alone or
with a wax may be employed.
Formulations for oral use may be also presented as hard gelatin capsules where the
active ingredient is mixed with an inert solid diluent, for example calcium phosphate or
kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil
medium, such as peanut oil, liquid paraffin or olive oil.
Aqueous suspensions of the disclosure n the active als in admixture with
excipients suitable for the manufacture of aqueous suspensions. Such excipients include a
ding agent, such as sodium carboxymethylcellulose, methylcellulose, hydroxypropyl
celluose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia, and
dispersing or wetting agents such as a naturally occurring phosphatide (e.g., lecithin), a
condensation product of an alkylene oxide with a fatty acid (e.g., polyoxyethylene stearate), a
condensation product of ne oxide with a long chain aliphatic alcohol (e.g.,
heptadecaethyleneoxycetanol), a condensation product of ethylene oxide with a partial ester
derived from a fatty acid and a hexitol anhydride (e.g., polyoxyethylene sorbitan
monooleate). The aqueous suspension may also contain one or more preservatives such as
ethyl or n-propyl p-hydroxy-benzoate, one or more coloring agents, one or more flavoring
agents and one or more sweetening agents, such as sucrose or rin.
Oil suspensions may be formulated by suspending the active ingredient in a vegetable
oil, such as s oil, olive oil, sesame oil or coconut oil, or in a mineral oil such as liquid
paraffin. The oral suspensions may contain a thickening agent, such as beeswax, hard
paraffin or cetyl alcohol. Sweetening agents, such as those set forth above, and flavoring
agents may be added to provide a palatable oral preparation. These compositions may be
preserved by the addition of an antioxidant such as ascorbic acid.
Dispersible powders and granules of the disclosure suitable for preparation of an
aqueous suspension by the addition of water provide the active ingredient in admixture with a
dispersing or wetting agent, a suspending agent, and one or more preservatives. Suitable
dispersing or g agents and suspending agents are exemplified by those disclosed above.
Additional excipients, for example sweetening, flavoring and coloring agents, may also be
present.
The pharmaceutical compositions of the disclosure may also be in the form of oil-in-
water emulsions. The oily phase may be a vegetable oil, such as olive oil or arachis oil, a
mineral oil, such as liquid paraffin, or a mixture of these. Suitable fying agents include
naturally-occurring gums, such as gum acacia and gum tragacanth, lly occurring
phosphatides, such as soybean lecithin, esters or partial esters derived from fatty acids and
hexitol anhydrides, such as an eate, and condensation products of these partial
esters with ethylene oxide, such as polyoxyethylene sorbitan monooleate. The emulsion may
also n sweetening and flavoring . Syrups and elixirs may be formulated with
sweetening agents, such as glycerol, ol or sucrose. Such formulations may also contain
a demulcent, a vative, a flavoring or a coloring agent.
The pharmaceutical compositions of the disclosure may be in the form of a sterile
injectable preparation, such as a sterile injectable aqueous or oleaginous suspension. This
suspension may be formulated according to the known art using those suitable dispersing or
wetting agents and ding agents which have been mentioned above. The sterile
injectable preparation may also be a sterile injectable solution or suspension in a non-toxic
erally acceptable diluent or solvent, such as a solution in tane-diol or prepared as
a lyophilized powder. Among the acceptable vehicles and ts that may be employed are
water, Ringer’s solution and isotonic sodium chloride solution. In addition, sterile fixed oils
may conventionally be employed as a t or suspending medium. For this purpose any
bland fixed oil may be employed including synthetic mono- or diglycerides. In addition, fatty
acids such as oleic acid may likewise be used in the preparation of injectables.
The amount of active ingredient that may be combined with the carrier material to
produce a single dosage form will vary depending upon the host treated and the particular
mode of administration. For example, a time-release ation intended for oral
administration to humans may contain approximately 1 to 1000 mg of active material
compounded with an appropriate and convenient amount of carrier material which may vary
from about 5 to about 95% of the total compositions (weight:weight). The pharmaceutical
composition can be prepared to provide easily measurable amounts for administration. For
example, an aqueous solution intended for intravenous infusion may contain from about 3 to
500 µg of the active ingredient per milliliter of solution in order that infusion of a suitable
volume at a rate of about 30 mL/hr can occur.
Formulations suitable for stration to the eye include eye drops wherein the
active ingredient is dissolved or suspended in a suitable carrier, especially an aqueous solvent
for the active ingredient. The active ingredient is preferably present in such formulations in a
tration of 0.5 to 20%, advantageously 0.5 to 10% ularly about 1.5% w/w.
Formulations suitable for topical administration in the mouth include lozenges
sing the active ingredient in a flavored basis, usually sucrose and acacia or tragacanth;
pastilles comprising the active ingredient in an inert basis such as gelatin and glycerin, or
sucrose and acacia; and mouthwashes comprising the active ingredient in a suitable liquid
carrier.
Formulations for rectal stration may be presented as a suppository with a
suitable base sing for example cocoa butter or a salicylate.
Formulations suitable for intrapulmonary or nasal administration have a particle size
for example in the range of 0.1 to 500 s ding particle sizes in a range between
0.1 and 500 s in increments such as 0.5 microns, 1 micron, 30 microns, 35 microns,
etc.), which is administered by rapid inhalation through the nasal e or by inhalation
h the mouth so as to reach the ar sacs. Suitable formulations include aqueous or
oily solutions of the active ingredient. Formulations suitable for aerosol or dry powder
administration may be prepared according to conventional methods and may be delivered
with other therapeutic agents such as nds heretofore used in the treatment or
prophylaxis of conditions ated with HCV activity.
Formulations suitable for vaginal administration may be presented as pessaries,
tampons, creams, gels, pastes, foams or spray formulations containing in addition to the
active ingredient such carriers as are known in the art to be appropriate.
Formulations suitable for parenteral administration include aqueous and non-aqueous
sterile injection solutions which may n anti-oxidants, s, bacteriostats and solutes
which render the formulation isotonic with the blood of the intended recipient; and aqueous
and non-aqueous sterile suspensions which may include suspending agents and ning
agents.
The formulations are presented in unit-dose or multi-dose containers, for example
sealed ampoules and vials, and may be stored in a freeze-dried (lyophilized) condition
requiring only the on of the sterile liquid carrier, for example water for injection,
immediately prior to use. Extemporaneous injection solutions and suspensions are prepared
from sterile powders, es and tablets of the kind previously described. Preferred unit
dosage formulations are those containing a daily dose or unit daily sub-dose, as herein above
recited, or an appropriate fraction thereof, of the active ingredient.
It should be tood that in addition to the ingredients particularly mentioned
above the formulations of this disclosure may include other agents conventional in the art
having regard to the type of formulation in question, for example those suitable for oral
administration may include ing .
The disclosure further provides veterinary compositions sing at least one active
ingredient as above defined together with a veterinary carrier or.
Veterinary carriers are materials useful for the purpose of administering the
composition and may be solid, liquid or gaseous materials which are otherwise inert or
acceptable in the nary art and are compatible with the active ingredient. These
veterinary compositions may be administered orally, parenterally or by any other desired
route.
nds of the disclosure can also be formulated to provide controlled release of
the active ient to allow less frequent dosing or to improve the pharmacokinetic or
toxicity e of the active ingredient. Accordingly, the disclosure also provides
compositions sing one or more compounds of the disclosure formulated for sustained
or controlled release.
Effective dose of active ingredient depends at least on the nature of the condition
being d, toxicity, whether the nd is being used prophylactically (lower doses),
the method of delivery, and the pharmaceutical formulation, and will be determined by the
clinician using conventional dose escalation studies.
Routes of Administration
One or more compounds of the disclosure (herein referred to as the active ingredients)
are administered by any route appropriate to the condition to be treated. Suitable routes
include oral, rectal, nasal, topical (including buccal and sublingual), vaginal and parenteral
ding subcutaneous, intramuscular, enous, intradermal, intrathecal and epidural),
and the like. It will be appreciated that the preferred route may vary with for example the
condition of the recipient. An advantage of the compounds of this disclosure is that they are
orally bioavailable and can be dosed orally.
HCV ation Therapy
In r embodiment, non-limiting examples of suitable combinations include
ations of one or more compounds of formula (I) and (A1-A4) with one or more
interferons, ribavirin or its analogs, HCV NS3 protease inhibitors, alpha-glucosidase 1
inhibitors, hepatoprotectants, nucleoside or nucleotide tors of HCV NS5B polymerase,
non-nucleoside inhibitors of HCV NS5B polymerase, HCV NS5A inhibitors, TLR-7
agonists, cyclophillin inhibitors, HCV IRES inhibitors, pharmacokinetic enhancers, and other
drugs or therapeutic agents for treating HCV.
More specifically, one or more compounds as described herein may be combined with
one or more compounds selected from the group consisting of:
1) interferons, e.g., pegylated rIFN-alpha 2b (PEG-Intron), pegylated rIFN-alpha 2a
(Pegasys), rIFN-alpha 2b (Intron A), rIFN-alpha 2a (Roferon-A), interferon alpha (MOR-22,
OPC-18, Alfaferone, Alfanative, eron, subalin), interferon n-1 (Infergen),
interferon alpha-n1 (Wellferon), interferon alpha-n3 on), interferon-beta (Avonex, DL-
8234), interferon-omega (omega DUROS, Biomed 510), albinterferon alpha-2b (Albuferon),
IFN alpha-2b XL, BLX-883 (Locteron), DA-3021, glycosylated interferon alpha-2b (AVI-
005), PEG-Infergen, PEGylated eron lambda-1 (PEGylated IL-29), and belerofon;
2) ribavirin and its analogs, e.g., ribavirin (Rebetol, Copegus), and taribavirin
(Viramidine);
3) HCV NS3 protease inhibitors, e.g., evir (SCH-503034, , telaprevir
(VX-950), TMC435350, BI-1335, BI-1230, MK-7009, VBY-376, VX-500, GS-9256, GS-
9451, BMS-605339, PHX-1766, AS-101, YH-5258, YH5530, YH5531, ABT-450, ACH-
1625, ITMN-191, MK5172, MK6325, and MK2748;
4) alpha-glucosidase 1 inhibitors, e.g., celgosivir (MX-3253), ol, and UT-231B;
) protectants, e.g., emericasan (IDN-6556), 8, GS-9450 (LB-84451),
silibilin, and MitoQ;
6) nucleoside or nucleotide inhibitors of HCV NS5B polymerase, e.g., R1626, R7128
(R4048), IDX184, 2, BCX-4678, valopicitabine (NM-283), MK-0608, sofosbuvir
(GS-7977 (formerly PSI-7977)), and 9 (now BMS986094);
7) cleoside tors of HCV NS5B polymerase, e.g., PF-868554, VCH-759,
VCH-916, JTK-652, MK-3281, GS-9190, VBY-708, VCH-222, A848837, ANA-598,
7, GL59728, A-63890, A-48773, A-48547, BC-2329, VCH-796 (nesbuvir),
GSK625433, BILN-1941, XTL-2125, ABT-072, ABT-333, GS-9669, 92, and GS-
9190;
8) HCV NS5A inhibitors, e.g., AZD-2836 (A-831), BMS-790052, ACH-3102, ACH-
2928, MK8325, MK4882, MK8742, PSI-461, IDX719, and A-689;
9) TLR-7 agonists, e.g., imiquimod, 852A, GS-9524, ANA-773, ANA-975, AZD-
8848 (DSP-3025), and SM-360320;
10) cyclophillin inhibitors, e.g., 025, SCY-635, and NIM811;
11) HCV IRES inhibitors, e.g., MCI-067;
12) cokinetic enhancers, e.g., BAS-100, SPI-452, PF-4194477, TMC-41629,
GS-9350, GS-9585, and romycin; and
13) other drugs for treating HCV, e.g., thymosin alpha 1 (Zadaxin), nitazoxanide
(Alinea, NTZ), BIVN-401 (virostat), PYN-17 (altirex), 03002, actilon (CPG-10101),
GS-9525, KRN-7000, civacir, GI-5005, XTL-6865, BIT225, PTX-111, ITX2865, TT-033i,
ANA 971, NOV-205, tarvacin, EHC-18, VGX-410C, EMZ-702, AVI 4065, BMS-650032,
BMS-791325, Bavituximab, MDX-1106 (ONO-4538), Oglufanide, and VX-497
(merimepodib).
More ically, one or more compounds as described herein may be combined with
one or more compounds ed from the group consisting of non-nucleoside tors of
HCV NS5B polymerase (ABT-072 and ABT-333), HCV NS5A inhibitors (ACH-3102 and
ACH-2928) and HCV NS3 protease inhibitors(ABT-450 and ACH-1625).
In yet another embodiment, the present application ses pharmaceutical
compositions comprising a compound as described herein, or a pharmaceutically acceptable
salt, solvate, and/or ester thereof, in combination with at least one additional therapeutic
agent, and a pharmaceutically acceptable carrier or ent.
According to one embodiment, the therapeutic agent used in combination with the
compound as described herein can be any agent having a therapeutic effect when used in
combination with the compound as described herein. For example, the therapeutic agent used
in ation with the compound as described herein can be interferons, ribavirin analogs,
NS3 se inhibitors, NS5b polymerase inhibitors, alpha-glucosidase 1 inhibitors,
hepatoprotectants, non-nucleoside tors of HCV, and other drugs for treating HCV.
In another embodiment, the present application provides pharmaceutical compositions
sing a compound of formula (I), or a pharmaceutically acceptable salt, solvate, and/or
ester thereof, in combination with at least one additional therapeutic agent selected from the
group consisting of pegylated rIFN-alpha 2b, pegylated rIFN-alpha 2a, rIFN-alpha 2b, IFN
alpha-2b XL, rIFN-alpha 2a, consensus IFN alpha, infergen, rebif, locteron, AVI-005, PEG-
infergen, pegylated IFN-beta, oral interferon alpha, feron, reaferon, intermax alpha, r-IFN-
beta, infergen + actimmune, IFN-omega with DUROS, albuferon, rebetol, copegus, levovirin,
VX-497, dine (taribavirin), A-831, A-689, NM-283, citabine, R1626, PSI-6130
(R1656), HCV-796, BILB 1941, MK-0608, NM-107, R7128, 9, PF-868554,
GSK625433, XTL-2125, SCH-503034 (SCH-7), VX-950 (Telaprevir), ITMN-191, and
BILN-2065, MX-3253 (celgosivir), UT-231B, IDN-6556, ME 3738, MitoQ, and LB-84451,
benzimidazole derivatives, benzo-1,2,4-thiadiazine derivatives, and alanine
derivatives, zadaxin, nitazoxanide (alinea), BIVN-401 (virostat), DEBIO-025, VGX-410C,
EMZ-702, AVI 4065, bavituximab, oglufanide, PYN-17, KPE02003002, actilon (CPG-
10101), KRN-7000, civacir, GI-5005, ANA-975 (isatoribine), 65, ANA 971, NOV-
205, in, EHC-18, and NIM811 and a pharmaceutically acceptable r or excipient.
In yet another ment, the present application es a combination
pharmaceutical agent comprising:
a) a first pharmaceutical composition comprising a compound of formula (I), or a
pharmaceutically acceptable salt, solvate, or ester thereof; and
b) a second pharmaceutical composition comprising at least one additional
therapeutic agent selected from the group consisting of HIV protease inhibiting compounds,
HIV non-nucleoside inhibitors of reverse transcriptase, HIV nucleoside inhibitors of reverse
transcriptase, HIV tide inhibitors of reverse transcriptase, HIV integrase tors,
gp41 inhibitors, CXCR4 inhibitors, gp120 tors, CCR5 tors, interferons, ribavirin
analogs, NS3 protease inhibitors, alpha-glucosidase 1 tors, hepatoprotectants, nonnucleoside
inhibitors of HCV, and other drugs for treating HCV, and combinations thereof.
In another embodiment is provided a pharmaceutical composition comprising a
compound of formula (I) as described herein and a nucleoside or nucleotide inhibitors of
HCV NS5B polymerase and optionally an interferon or ribavirin. In one embodiment, the
compound is methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2R)
[(methoxycarbonyl)amino]phenylacetyl}(methoxymethyl)pyrrolidinyl]-1H-
imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate having the formula:
and the inhibitor is sofosbuvir.
Combinations of the compounds of a I and additional active therapeutic agents
may be selected to treat patients infected with HCV and other conditions such as HIV
infections. Accordingly, the compounds of formula I may be ed with one or more
compounds useful in treating HIV, for example HIV protease inhibiting compounds, nonnucleoside
inhibitors of HIV reverse riptase, HIV nucleoside inhibitors of reverse
transcriptase, HIV tide inhibitors of reverse transcriptase, HIV integrase inhibitors,
gp41 inhibitors, CXCR4 inhibitors, gp120 inhibitors, CCR5 tors, interferons, ribavirin
analogs, NS3 protease tors, NS5b polymerase inhibitors, alpha-glucosidase 1 inhibitors,
hepatoprotectants, non-nucleoside inhibitors of HCV, and other drugs for treating HCV.
More specifically, one or more compounds of formula (I) or (A1)-(A4) may be
combined with one or more compounds ed from the group consisting of 1) HIV
protease inhibitors, e.g., amprenavir, atazanavir, fosamprenavir, indinavir, lopinavir,
ritonavir, lopinavir + ritonavir, nelfinavir, saquinavir, tipranavir, brecanavir, darunavir, TMC-
126, TMC-114, mozenavir (DMP-450), JE-2147 (AG1776), AG1859, DG35, L-756423,
RO0334649, KNI-272, DPC-681, DPC-684, and GW640385X, DG17, PPL-100, 2) a HIV
non-nucleoside inhibitor of e transcriptase, e.g., capravirine, emivirine, delaviridine,
efavirenz, pine, (+) calanolide A, etravirine, GW5634, DPC-083, DPC-961, DPC-963,
0, and TMC-120, TMC-278 (rilpivirine), enz, BILR 355 BS, VRX ,
UK-453,061, RDEA806, 3) a HIV side inhibitor of reverse transcriptase, e.g.,
zidovudine, emtricitabine, didanosine, stavudine, zalcitabine, lamivudine, abacavir,
amdoxovir, elvucitabine, alovudine, MIV-210, racivir (-FTC), D-d4FC, emtricitabine,
phosphazide, fozivudine tidoxil, fosalvudine tidoxil, apricitibine (AVX754), amdoxovir, KP-
1461, abacavir + lamivudine, abacavir + lamivudine + zidovudine, zidovudine + lamivudine,
4) a HIV nucleotide inhibitor of reverse transcriptase, e.g., tenofovir, tenofovir disoproxil
fumarate + emtricitabine, tenofovir disoproxil fumarate + emtricitabine + efavirenz, and
adefovir, 5) a HIV integrase inhibitor, e.g., in, derivatives of curcumin, chicoric acid,
derivatives of chicoric acid, 3,5-dicaffeoylquinic acid, derivatives of 3,5-dicaffeoylquinic
acid, aurintricarboxylic acid, tives of aurintricarboxylic acid, caffeic acid phenethyl
ester, derivatives of caffeic acid phenethyl ester, tyrphostin, derivatives of tyrphostin,
quercetin, derivatives of quercetin, S-1360, zintevir (AR-177), L-870812, and L-870810,
MK-0518 (raltegravir), BMS-707035, 8, BA-011, BMS-538158, GSK364735C, 6) a
gp41 inhibitor, e.g., enfuvirtide, sifuvirtide, FB006M, TRI-1144, SPC3, DES6, Locus gp41,
CovX, and REP 9, 7) a CXCR4 inhibitor, e.g., AMD-070, 8) an entry inhibitor, e.g., SP01A,
TNX-355, 9) a gp120 inhibitor, e.g., BMS-488043 and BlockAide/CR, 10) a G6PD and
NADH-oxidase inhibitor, e.g., tin, 11) a CCR5 inhibitor, e.g., aplaviroc, vicriviroc,
INCB9471, PRO-140, INCB15050, PF-232798, CCR5mAb004, and maraviroc, 12) an
interferon, e.g., pegylated lpha 2b, pegylated rIFN-alpha 2a, rIFN-alpha 2b, IFN alpha-
2b XL, lpha 2a, consensus IFN alpha, en, rebif, on, AVI-005, PEG-
infergen, pegylated IFN-beta, oral interferon alpha, feron, reaferon, intermax alpha, r-IFN-
beta, infergen + actimmune, IFN-omega with DUROS, and albuferon, 13) ribavirin analogs,
e.g., rebetol, copegus, levovirin, VX-497, and viramidine (taribavirin), 14) NS5a inhibitors,
e.g., A-831, A-689, and BMS-790052, 15) NS5b polymerase inhibitors, e.g., ,
valopicitabine, R1626, PSI-6130 (R1656), HCV-796, BILB 1941, MK-0608, NM-107,
R7128, VCH-759, PF-868554, GSK625433, and 25, 16) NS3 protease inhibitors,
e.g., SCH-503034 (SCH-7), VX-950 revir), ITMN-191, and BILN-2065, 17) lucosidase
1 tors, e.g., MX-3253 (celgosivir) and B, 18) hepatoprotectants,
e.g., IDN-6556, ME 3738, MitoQ, and LB-84451, 19) cleoside inhibitors of HCV,
e.g., benzimidazole tives, benzo-1,2,4-thiadiazine derivatives, and phenylalanine
derivatives, 20) other drugs for treating Hepatitis C, e.g., zadaxin, nitazoxanide a),
BIVN-401 (virostat), DEBIO-025, VGX-410C, EMZ-702, AVI 4065, bavituximab,
oglufanide, PYN-17, KPE02003002, actilon (CPG-10101), KRN-7000, civacir, GI-5005,
ANA-975 (isatoribine), XTL-6865, ANA 971, NOV-205, tarvacin, EHC-18, and NIM811,
) pharmacokinetic enhancers, e.g., BAS-100 and SPI452, 21) RNAse H tors, e.g.,
ODN-93 and ODN-112, 22) other anti-HIV agents, e.g., VGV-1, PA-457 (bevirimat),
ampligen, HRG214, cytolin, polymun, VGX-410, KD247, AMZ 0026, CYT 99007, A-221
HIV, BAY 50-4798, MDX010 (iplimumab), PBS119, ALG889, and PA-1050040.
It is contemplated that the second therapeutic agent will be administered in a manner
that is known in the art and the dosage may be selected by someone of skill in the art. For
e, the second agent may be administered in a dose from about 0.01 milligrams to
about 2 grams per day.
Metabolites of the Compounds
Also falling within the scope of this disclosure are the in vivo metabolic ts of
the compounds described herein. Such products may result for example from the oxidation,
reduction, hydrolysis, amidation, esterification and the like of the administered nd,
primarily due to enzymatic processes. Accordingly, the disclosure includes compounds
ed by a process comprising contacting a compound of this disclosure with a mammal
for a period of time sufficient to yield a metabolic product thereof. Such products typically
are identified by preparing a radiolabelled (e.g., C14 or H3) compound of the disclosure,
administering it parenterally in a detectable dose (e.g., greater than about 0.5 mg/kg) to an
animal such as rat, mouse, guinea pig, monkey, or to man, allowing sufficient time for
metabolism to occur (typically about 30 seconds to 30 hours) and isolating its conversion
products from the urine, blood or other biological samples. These ts are easily isolated
since they are labeled (others are ed by the use of antibodies capable of binding epitopes
surviving in the metabolite). The metabolite structures are determined in conventional
fashion, e.g., by MS or NMR analysis. In general, analysis of metabolites is done in the same
way as conventional drug lism studies well-known to those skilled in the art. The
conversion products, so long as they are not otherwise found in vivo, are useful in diagnostic
assays for eutic dosing of the compounds of the disclosure even if they possess no
HCV –inhibitory activity of their own.
Methods for determining ity of compounds in surrogate gastrointestinal
secretions are known.
Exemplary s of Making the Compounds
The sure also relates to methods of making the compositions of the disclosure.
The compositions are prepared by any of the applicable techniques of organic synthesis.
Many such techniques are well known in the art. However, many of the known techniques
are elaborated in Compendium of Organic Synthetic Methods (John Wiley & Sons, New
York), Vol. 1, Ian T. Harrison and Shuyen Harrison, 1971; Vol. 2, Ian T. on and
Shuyen Harrison, 1974; Vol. 3, Louis S. Hegedus and Leroy Wade, 1977; Vol. 4, Leroy G.
Wade, Jr., 1980; Vol. 5, Leroy G. Wade, Jr., 1984; and Vol. 6, Michael B. Smith; as well
as March, J., Advanced Organic Chemistry, Third Edition, (John Wiley & Sons, New York,
1985), Comprehensive Organic Synthesis. Selectivity, Strategy & Efficiency in Modern
Organic Chemistry. In 9 Volumes, Barry M. Trost, Editor-in-Chief (Pergamon Press, New
York, 1993 printing). Other methods suitable for preparing compounds of the disclosure are
described in International Patent Application Publication Number .
A number of exemplary methods for the preparation of the compositions of the
disclosure are provided in the schemes and examples below. These methods are ed to
illustrate the nature of such preparations and are not intended to limit the scope of applicable
methods.
Generally, the reaction conditions such as temperature, on time, solvents, workup
ures, and the like, will be those common in the art for the particular reaction to be
performed. The cited reference al, together with al cited therein, contains
detailed descriptions of such conditions. Typically the temperatures will be -100°C to 200°C,
solvents will be aprotic or protic, and reaction times will be 10 seconds to 10 days. Work-up
typically consists of ing any unreacted reagents followed by partition between a
water/organic layer system (extraction) and separating the layer containing the product.
Oxidation and reduction reactions are typically carried out at temperatures near room
temperature (about 20°C), although for metal hydride reductions frequently the temperature is
reduced to 0°C to , solvents are typically aprotic for reductions and may be either
protic or aprotic for oxidations. Reaction times are adjusted to achieve desired conversions.
Condensation reactions are lly carried out at temperatures near room
temperature, although for non-equilibrating, kinetically controlled condensations reduced
temperatures (0°C to -100°C) are also common. Solvents can be either protic (common in
brating ons) or aprotic (common in kinetically controlled reactions).
Standard synthetic techniques such as azeotropic removal of reaction by-products and
use of anhydrous reaction conditions (e.g., inert gas environments) are common in the art and
will be applied when applicable.
The terms “treated”, “treating”, “treatment”, and the like, when used in tion
with a chemical synthetic operation, mean contacting, , reacting, allowing to react,
bringing into t, and other terms common in the art for indicating that one or more
chemical entities is treated in such a manner as to convert it to one or more other chemical
entities. This means that “treating compound one with nd two” is synonymous with
ing compound one to react with compound two”, “contacting compound one with
compound two”, “reacting compound one with compound two”, and other expressions
common in the art of organic synthesis for reasonably indicating that nd one was
“treated”, “reacted”, “allowed to react”, etc., with compound two. For example, treating
indicates the reasonable and usual manner in which organic chemicals are allowed to react.
Normal concentrations (0.01M to 10M, typically 0.1M to 1M), temperatures C to
250°C, typically -78°C to 150°C, more typically -78°C to 100°C, still more typically 0°C to
100°C), reaction vessels (typically glass, plastic, metal), solvents, pressures, heres
(typically air for oxygen and water insensitive reactions or nitrogen or argon for oxygen or
water sensitive), etc., are intended unless otherwise indicated. The knowledge of similar
reactions known in the art of organic synthesis is used in selecting the ions and
apparatus for “treating” in a given process. In particular, one of ry skill in the art of
organic synthesis selects conditions and tus reasonably expected to successfully carry
out the chemical reactions of the described ses based on the knowledge in the art.
cations of each of the exemplary schemes and in the Examples (hereafter
“exemplary schemes”) leads to various analogs of the specific exemplary materials produced.
The cited citations describing suitable methods of organic synthesis are applicable to
such modifications.
In each of the exemplary schemes it may be advantageous to separate reaction
products from one r and/or from starting materials. The desired products of each step
or series of steps is separated and/or ed (hereinafter separated) to the desired degree of
homogeneity by the techniques common in the art. Typically such separations involve
multiphase extraction, crystallization from a solvent or solvent mixture, distillation,
sublimation, or chromatography. Chromatography can involve any number of methods
including, for example: e-phase and normal phase; size exclusion; ion ge; high,
medium, and low pressure liquid chromatography methods and tus; small scale
analytical; simulated moving bed (SMB) and preparative thin or thick layer chromatography,
as well as techniques of small scale thin layer and flash chromatography.
Another class of separation methods involves treatment of a mixture with a reagent
selected to bind to or render otherwise separable a desired product, unreacted starting
material, reaction by product, or the like. Such ts include adsorbents or absorbents
such as activated carbon, molecular sieves, ion exchange media, or the like. Alternatively,
the reagents can be acids in the case of a basic material, bases in the case of an acidic
material, binding reagents such as antibodies, binding ns, selective chelators such as
crown ethers, liquid/liquid ion extraction reagents (LIX), or the like.
Selection of appropriate methods of separation depends on the nature of the materials
involved. For example, boiling point, and molecular weight in lation and sublimation,
presence or absence of polar functional groups in chromatography, stability of materials in
acidic and basic media in multiphase extraction, and the like. One skilled in the art will apply
techniques most likely to achieve the desired separation.
A single stereoisomer, e.g., an enantiomer, substantially free of its stereoisomer may
be obtained by resolution of the racemic mixture using a method such as formation of
reomers using lly active resolving agents (Stereochemistry of Carbon
Compounds, (1962) by E. L. Eliel, McGraw Hill; Lochmuller, C. H., (1975) J.
Chromatogr., 113, 3) 283-302). Racemic mixtures of chiral compounds of the disclosure can
be separated and isolated by any suitable method, including: (1) formation of ionic,
diastereomeric salts with chiral compounds and separation by fractional crystallization or
other methods, (2) formation of diastereomeric compounds with chiral derivatizing reagents,
separation of the diastereomers, and conversion to the pure stereoisomers, and (3) tion
of the substantially pure or enriched isomers ly under chiral conditions.
Under method (1), reomeric salts can be formed by reaction of enantiomerically
pure chiral bases such as brucine, quinine, ephedrine, strychnine, -methyl--
phenylethylamine (amphetamine), and the like with asymmetric compounds g acidic
functionality, such as carboxylic acid and sulfonic acid. The reomeric salts may be
induced to separate by fractional crystallization or ionic chromatography. For separation of
the optical isomers of amino compounds, addition of chiral carboxylic or sulfonic acids, such
as camphorsulfonic acid, tartaric acid, mandelic acid, or lactic acid can result in formation of
the diastereomeric salts.
Alternatively, by method (2), the substrate to be resolved is reacted with one
enantiomer of a chiral nd to form a diastereomeric pair (Eliel, E. and Wilen, S.
(1994) chemistry of Organic Compounds, John Wiley & Sons, Inc., p. 322).
Diastereomeric compounds can be formed by reacting asymmetric compounds with
enantiomerically pure chiral derivatizing reagents, such as menthyl derivatives, followed by
tion of the reomers and hydrolysis to yield the free, enantiomerically enriched
substrate. A method of ining optical purity involves making chiral esters, such as a
menthyl ester, e.g., (-) menthyl chloroformate in the presence of base, or Mosher ester, -
methoxy--(trifluoromethyl)phenyl acetate (Jacob III. (1982) J. Org. Chem. 47:4165), of
the c mixture, and analyzing the NMR spectrum for the presence of the two
atropisomeric diastereomers. Stable diastereomers of atropisomeric compounds can be
separated and isolated by - and reverse-phase chromatography following methods for
separation of atropisomeric naphthyl-isoquinolines (Hoye, T., WO 96/15111). By method
(3), a racemic mixture of two enantiomers can be separated by chromatography using a chiral
nary phase (Chiral Liquid Chromatography (1989) W. J. Lough, Ed. Chapman and
Hall, New York; Okamoto, (1990) J. of Chromatogr. 513:375-378). Enriched or purified
enantiomers can be distinguished by s used to distinguish other chiral les with
asymmetric carbon atoms, such as optical rotation and circular dichroism.
Schemes and Examples
General aspects of these exemplary methods are bed below and in the
Examples. Each of the products of the following processes is optionally ted, ed,
and/or purified prior to its use in subsequent processes.
A number of exemplary methods for the preparation of compounds of the disclosure
are provided herein, for example, in the Examples below. These methods are intended to
illustrate the nature of such preparations and are not intended to limit the scope of applicable
methods. Certain compounds of the disclosure can be used as intermediates for the
preparation of other compounds of the disclosure. In the exemplary methods described
herein, the fragment E-V- can also be written as R9-. PG represents a protecting group
common for the given functional group that it is attached. The lation and removal of the
ting group can be accomplished using standard techniques, such as those described in
Wuts, P. G. M., Greene, T. Protective Groups in Organic Synthesis, 4th ed.; John Wiley &
Sons, Inc.: n, New Jersey, 2007.
Scheme 1. Representative synthesis of E-V-C(=O)-P-W-P-C(=O)-V-E
O Cl O
H2N V-C(=O)-P-W-P-C(=O)-V-E NH-V-C(=O)-P-W-P-C(=O)-V-E
1a 1b
O Cl O O
H2N V-C(=O)-P-W-P-C(=O)-V NH2 NH-V-C(=O)-P-W-P-C(=O)-V-NH
O O
1c 1d
Scheme 1 shows a general sis of an E-V-C(=O)-P-W-P-C(=O)-V-E molecule
of the disclosure wherein, for illustrative purposes, E is methoxycarbonylamino. The
treatment of either 1a or 1c with one or two equivalents respectively of methyl chloroformate
under basic conditions (e.g. sodium hydroxide) provides the molecule 1b or 1d.
Scheme 2. Representative synthesis of E-V-C(=O)-P-W-P-C(=O)-V-E
E-V-C(=O)-P-W V-E E-V-C(=O)-P-W
N O N
2a H 2b 2c
H O
N HO
W 2 V-E
N O
H N
2d 2b 2e O
V-E
Scheme 2 shows a general synthesis of an =O)-P-W-P-C(=O)-V-E molecule
of the disclosure wherein, for rative purposes, P is pyrrolidine. Coupling of amine 2a
with acid 2b is accomplished using a peptide ng reagent (e.g. HATU) to afford 2c.
Alternatively, amine 2d is coupled with two equivalents of 2b under similar conditions to
provide 2e.
Scheme 6. entative synthesis of R1-V-C(=O)-P-R2
E-V-C(=O)-P-W V-NH-PG E-V-C(=O)-P-W
N O N
6a H 6b 6c
V-NH-PG
PG-HN-V-C(=O)-P-W V-E PG-HN-V-C(=O)-P-W
N O N
6d H 6e 6f
PG-HN-V-C(=O)-P-W V-NH-PG PG-HN-V-C(=O)-P-W
N O N
6d H 6b 6g
V-NH-PG
PG-HN-P-W V-E PG-HN-P-W
N O N
6h H 6e 6i
PG-HN-P-W V-NH-PG PG-HN-P-W
N O N
6h H 6b 6j
W V-E PG-HN-W
N O N
6k H 6e 6l
PG-HN-W V-NH-PG W
N O N
6k H 6b 6m
V-NH-PG
Scheme 6 shows a general synthesis of an R1-V-C(=O)-P-R2 intermediate wherein,
for illustrative purposes, P is pyrrolidine, R1 is a generic group that is depicted as either -E or
a amino protecting group, and R2 is a generic group that is depicted as -W-P-C(=O)-V-E, -
W-P-C(=O)-V-NH-PG, -W-P-NH-PG, or -W-NH-PG. Coupling of amine 6a (or 6d, 6h,
6k) with acid 6b or 6e is accomplished using a peptide coupling reagent (e.g. HATU) to
afford 6c (or 6f, 6g, 6i, 6j, 6l, 6m) respectively.
Scheme 7. Representative synthesis of E-V-C(=O)-R1
O Cl O
H2N V-C(=O)-P-W-P-C(=O)-V-NH-PG NH-V-C(=O)-P-W-P-C(=O)-V-NH-PG
7a 7b
O Cl O
H2N V-C(=O)-P-W-P-PG NH-V-C(=O)-P-W-P-PG
7c 7d
O Cl O
H2N V-C(=O)-P-W-PG NH-V-C(=O)-P-W-PG
7e 7f
O Cl O
H2N V-C(=O)-P-PG NH-V-C(=O)-P-PG
7g O 7h
O Cl O
H2N V-C(=O)-O-PG NH-V-C(=O)-O-PG
7i 7j
Scheme 7 shows a l synthesis of an E-V-C(=O)-R1 intermediate wherein, for
illustrative es, E is methoxycarbonylamino and R1 is a generic group that is ed
as either -P-W-P-C(=O)-V-NH-PG, -P-W-P-PG, -P-W-PG, -P-PG, or -O-PG. Treatment of
7a (or 7c, 7e, 7g, 7i) with methyl chloroformate under basic conditions (e.g. sodium
hydroxide) provides the molecule 7b (or 7d, 7f, 7h, 7j).
Scheme 9. Representative sis of R1-P-R2
NH2 HO
P-C(=O)-V-E NH2
Br NH2 O
Br NH
9b P-C(=O)-V-E
9c O
N P-C(=O)-V-E
Br N
NH2 HO
P-PG NH2
Br NH2 O
Br NH
9e P-PG
9f O
N P-PG
Br N
Scheme 9 shows a general synthesis of an 2 intermediate wherein, for
illustrative purposes, R1 is -C(=O)-V-E or a protecting group and R2 is a substituted
benzimidazole. The formation of the benzimidazole is accomplished by coupling the acid 9b
or 9e with an arylamine 9a, using a peptide coupling reagent such as HATU, to afford 9c or
9f. Cyclization of the amide in the presence of an acid (such as acetic acid) affords the
benzimidazole containing le 9d or 9g.
The formation of multiple benzimidazoles is performed in the same , starting
with a bis-diamine to provide the corresponding bis-benzimidazole.
Scheme 20. Representative synthesis of R1-P-W-P-R2
Scheme 20 shows a general synthesis of an R1-P-W-P-R2 intermediate of the
disclosure wherein, for rative purposes, R1 and R2 are independent protecting groups and
W is a two aromatic ring unit constructed via a transition metal mediated cyclization.
Alkylation of phenol 20b with an alkyl bromide, such as 20a, provides the ether 20c.
Cyclization of the ic rings in the ce of a palladium catalyst provides the
compound 20d. Treatment of 20d with CuBr2 provides the α-haloketone 20e, which es
20f upon addition of an acid under basic conditions (e.g. Et3N). Reaction of 20f with an
amine or amine salt (e.g. ammonium acetate) affords the imidazole containing molecule 20g.
Oxidation of 20g, 20i, or 20l can be accomplished by g in the presence of MnO2 to
e 20h, 20j, or 20m, respectively. Conversion of 20g or 20h with a palladium catalyst,
such as Pd2dba3 and X-Phos, and a boron source such as nacolato)diboron provides the
boronic ester 20i or 20j. The boronic ester is coupled with an appropriate coupling partner
(e.g. 20k) using a palladium catalyst, such as Pd(PPh3)4 or PdCl2(dppf), to afford 20l or 20m.
For each transition metal mediated cross-coupling reaction, the roles of the nucleophile and
electrophile can be reversed to provide the same coupling product. Other transition metal
mediated cross couplings that enable the construction of W, but employ ative coupling
partners and reagents, include, but are not limited to, the Negishi, Kumada, Stille, and Ullman
ngs. For the preparation of alternate two aromatic ring containing W groups, this
general scheme can be applied through the appropriate choice of the ng reagents.
Scheme 21. Representative synthesis of R1-P-W-P-R2
O O
O O
Cl 20d
O O
PG-P O
21b O
O Br
PG-P O
O 21d
O O P-PG
PG-P O
N N P-PG
N N
PG-P H
21f/g
Scheme 21 shows a general synthesis of an R1-P-W-P-R2 intermediate of the
disclosure wherein, for illustrative purposes, R1 and R2 are independent protecting groups and
W is a two aromatic ring unit constructed via a transition metal ed cyclization.
Treatment of 20d with an activated vinyl reagent (e.g. potassium rifluoroborate) in the
presence of a palladium st (e.g. palladium acetate and S-Phos) provides the vinyl
compound 21a. Conversion to the corresponding α-halo ketone can be accomplished by
bromination with N-bromosuccinimide, followed by oxidation with MnO2. Displacement of
the α-halo ketone proceeds by the addition of an acid under basic conditions (e.g. Et3N).
Bromination of 21c proceeds upon treatment with pyridinium tribromide, and is followed by
the on of a second acid under basic conditions to provide the diester 21e. Reaction of
21e with an amine or amine salt (e.g. ammonium e) affords the imidazole containing
molecule 21f. Oxidation of 21f can be lished in the presence of MnO2 to provide 21g.
Scheme 22. Representative synthesis of E-V-C(=O)-P-W-P-R
O O
E-V-C(=O)-P O
21b O
O Br
E-V-C(=O)-P O
O 22b
O O P-PG
E-V-C(=O)-P O
N N P-PG
E-V-C(=O)-P N
22d/e
Scheme 22 shows a l synthesis of an E-V-C(=O)-P-W-P-R intermediate of the
disclosure wherein, for illustrative purposes, R is a protecting group and W is a two ic
ring unit. Displacement of the α-halo ketone 21b proceeds by the addition of an acid under
basic conditions (e.g. Et3N). Bromination of 22a proceeds upon treatment with pyridinium
mide, and is followed by the addition of a second acid under basic conditions to provide
the diester 22c. Reaction of 22c with an amine or amine salt (e.g. ammonium acetate) affords
the imidazole containing molecule 22d. Oxidation of 22d can be accomplished in the
ce of MnO2 to provide 22e.
Scheme 23. Representative synthesis of R-P-W-P-C(=O)-V-E
Scheme 23 shows a general synthesis of an E-V-C(=O)-P-W-P-R intermediate of the
sure wherein, for illustrative es, R is a protecting group and W is a two aromatic
ring unit. Displacement of the α-halo ketone 21d proceeds by the addition of an acid under
basic conditions (e.g. Et3N). Reaction of 23a with an amine or amine salt (e.g. ammonium
acetate) affords the imidazole containing molecule 23b. Oxidation of 23b can be
accomplished in the presence of MnO2 to e 23c.
Scheme 25. Representative synthesis of E-V-C(=O)-P-W-P-C(=O)-V-E
Scheme 25 shows a general synthesis of an E-V-C(=O)-P-W-P-C(=O)-V-E molecule
of the disclosure n, for illustrative purposes, E is ethylcarbonylamino. The treatment
of either 25a or 25c with one or two lents respectively of propionyl de under
basic conditions (e.g. sodium hydroxide) provides the molecule 25b or 25d.
Scheme 26. Representative syntheses of E-V-C(=O)-P-R and R1-P-R
Scheme 26 shows a general sis of an E-V-C(=O)-P-R and an R1-P-R molecule
of the disclosure wherein, for illustrative purposes R is a idazole. Treatment of the
aldehyde 26a with glyoxal, in the presence of ammonium hydroxide provides the imidazole
26b. Treatment with either osuccinamide or iodine provides the corresponding
haloimidazole 26c and 26d respectively. Separation from the corresponding bis-halogenated
compound can be accomplished by preparative HPLC chromatography. The conversion of
the bis-haloimidazole to the mono-haloimidazole can also be accomplished upon heating in
the presence of sodium sulfite. Further functionalization of the P group can be accomplished
upon removal of the protecting group and coupling with an appropriate acid (E-V-C(=O)-
OH).
Scheme 27. Representative synthesis of R1-P-W-P-R2
O O Br
O 27a
O Br
PG-P O
O 21d
O O P-PG
PG-P O
N N P-PG
PG-P N
21f/g
Scheme 27 shows an alternate general synthesis of an R1-P-W-P-R2 intermediate of
the invention wherein, for illustrative purposes, R1 and R2 are independent protecting groups
and W is a two aromatic ring unit constructed via a tion metal mediated cyclization.
Bromination of 21b with a brominating agent (i.e. pyridinium tribromide) provides the
dibromide 27a. Displacement of the primary e then proceeds by the on of an
acid under basic conditions (e.g. K2CO3) to provide 21d. Conversion to 21f or 21g can be
accomplished following methods described in Scheme 21.
Scheme 28. Representative synthesis of E-V-C(=O)-P-W-P-R
O O Br
O 27a
O Br
E-V-C(=O)-P O
O 22b
O O P-PG
E-V-C(=O)-P O
N N P-PG
E-V-C(=O)-P N
22d/e
Scheme 28 shows an alternate general synthesis of an E-V-C(=O)-P-W-P-R
intermediate of the ion wherein, for illustrative purposes, R is a protecting group and W
is a two ic ring unit. Bromination of 21b with a brominating agent (i.e. pyridinium
tribromide) provides the dibromide 27a. Displacement of the primary bromide then proceeds
by the addition of an acid under basic conditions (e.g. K2CO3) to provide 22d. Conversion to
22d or 22e can be accomplished ing methods bed in Scheme 22.
Specific Embodiments
In one embodiment the disclosure provides a compound which has formula:
O H
N P1b-C(=O)-V1b-E1b
N N
E1a-V1a-C(=O)-P1a H
(A1)
O H
N P1b-C(=O)-V1b-E1b
N N
E1a-V1a-C(=O)-P1a H
(A2)
N N P1b-C(=O)-V1b-E1b
N N
E1a-V1a-C(=O)-P1a H
(A3)
O H
N N =O)-V1b-E1b
N N
E1a-V1a-C(=O)-P1a H
(A4)
wherein the imidazole ring shown in formula A1, A2, A3, and A4 is optionally substituted
with one or more groups independently selected from halo, haloalkyl, cyano, or alkyl;
or a pharmaceutically acceptable salt or prodrug thereof.
In one embodiment the sure provides a compound which has formula:
O H
N N P1b-C(=O)-V1b-E1b
N N
E1a-V1a-C(=O)-P1a H
(A2) or
O H
N P1b-C(=O)-V1b-E1b
N N
E1a-V1a-C(=O)-P1a H
(A4)
wherein the imidazole ring shown in formula A2 and A4 is optionally substituted with one or
more groups independently selected from halo, kyl, cyano, or alkyl;
or a pharmaceutically acceptable salt or g thereof.
In one embodiment at least one of E1a and E1b is -N(H)(alkoxycarbonyl).
In one ment at least one of E1a and E1b is -N(H)C(=O)OMe.
In one embodiment both of E1a and E1b are -N(H)C(=O)OMe.
In one embodiment at least one of E1a and E1b is -N(H)(cycloalkylcarbonyl) or
-N(H)(cycloalkyloxycarbonyl).
In one embodiment at least one of E1a and E1b is cyclopropylcarbonylamino,
cyclobutylcarbonylamino, cyclopropyloxycarbonylamino or cyclobutyloxycarbonylamino.
In one embodiment E1a and E1b are each independently selected from
cyclopropylcarbonylamino, cyclobutylcarbonylamino, cyclopropyloxycarbonylamino or
methoxycarbonylamino.
In one ment at least one of V1a and V1b is:
.
In one embodiment E1a-V1a taken together are R9a or wherein E1b-V1b taken together
are R9b.
In one embodiment at least one of P1a and P1b is selected from:
In one embodiment P1a and P1b are each independently selected from:
In one embodiment one of P1a and P1b is:
and the other of P1a and P1b is:
In one embodiment one of P1a and P1b is:
O
and the other of P1a and P1b is:
In one embodiment at least one of P1a and P1b is:
F O
F .
In one embodiment at least one of P1a and P1b is:
O .
In one embodiment at least one of -V1a -P1a – and -P1b-C(=O)-V1b- is:
or O
O .
In one embodiment at least one of -V1a –C(=O)-P1a – and -P1b-C(=O)-V1b- is:
O O
N O
N N
O OMe
N O
N or
O .
In one embodiment both of -V1a -P1a – and -P1b-C(=O)-V1b- are independently
selected from:
O O
N O
N N
O OMe
N O
N or
O .
In one embodiment one of -V1a –C(=O)-P1a – and -P1b-C(=O)-V1b- is:
O O
O O
N O O
N N
N N
OMe OMe
O O N
N N
O .
and the other of -V1a -P1a – and -P1b-C(=O)-V1b- is:
O O
N O
N N
O OMe
N O
N or
O .
In one embodiment the disclosure provides a nd of formula:
H O
O N
O H
N N
N N
N O
N O
O N
O H
O N
N N
N N
N O
N O
O
O H
O H
N O
O N N N
N N N O
O O N
H O
H O H
O O N N
O O
N N HN
O N O H
O N
N N O
O N N
N O
H N O
O O
HN H
N N N O
N N N
H O
HN O
H O
O N
O H
N N O
N N
N O
N O
O H
O H
N O
O N N N
N N N O
O N
H O
O H
O O
N N N
N N
N O O
O H O H H
N O N N
O N
N N O
H O
O N O H
O N
N N
N N
N O
H N O
O H
O O
NH O N
HN N
N N O O
H O H
O O N N
N N O O
O O
O N O H
O N
N N
N N
H O
O NH O H
O N N N
N N N O
H HN O
H O H
O O N N
N O
N N O
or a pharmaceutically acceptable salt or g thereof.
In one embodiment the disclosure provides a compound of formula:
O N
O H
N N N
N N
N O
H N O
O H
or a pharmaceutically acceptable salt or prodrug thereof.
In one ment the disclosure provides a compound of formula:
O O H
NH O N
HN N
N N O O
O H
O H
N O
O N N N
N N N O
O N
H H O
O
O N O H
O N
N N
N N
N O
H N O
O H
O H O H H
N O N N
O N
N N O
H N O
H O H
O O N N
N N O O
O N O H
O N
N N O
O N N
N O
H N O
or a pharmaceutically acceptable salt or prodrug thereof.
The disclosure will now be illustrated by the following non-limiting Examples. The
ing abbreviations are used throughout the specification, including the Examples.
(aq) Aqueous
(g) Gas
(s) Solid
°C Degree Celsius
Ac Acetate
ACN Acetonitrile
apprx Approximate
Bis- Bis(pinacolato)diboron
pinB/(Bpin)2/(pinB)2
BOC/Boc tert-Butoxycarbonyl
calc'd ated
CC50 50% Cytotoxicity concentration
COMU 1-[(1-(Cyanoethoxy
oxoethylideneaminooxy)dimethylaminomorpholino)]
uronium hexafluorophosphate
d Doublet
dba dibenzalacetone
DCM romethane
dd Doublet of doublets
ddd Doublet of doublet of doublets
DIPEA/DIEA N,N-Diisopropylethylamine
DMA N,N-Dimethylacetamide
DMAP 4-Dimethylaminopyridine
DME Dimethoxyethane
DMEM Eagle's minimal essential medium
DMF ylformamide
mso Dimethylsulfoxide
dppf 1,1'-bis( diphenylphosphanyl) ferrocene
dt Doublet of triplets
EC50 Half maximal effective concentration
ESI Electrospray tion
Et Ethyl
ext. External
FBS Fetal bovine serum
g Gram
HATU 2-(1HAzabenzotriazolyl)-1,1,3,3-tetramethyl
uronium hexafluorophosphate aminium
HPLC High performance liquid chromatography
hr/h Hour
Hz Hertz
J Coupling constant
LCMS Liquid chromatography mass spectrometry
M Molar
m Multiplet
m/z Mass to charge
M+ Mass peak
Me Methyl
mg Milligram
MHz rtz
min Minute
mL Milliliter
mmol Millimole
Moc Methoxycarbonyl
MS Mass spectrometry
MTBE Methyl tert-butyl ether
N Normal
NADPH Nicotinamide adenine dinucleotide phosphate
NBS N-Bromosuccinimide
NMM N-Methylmorpholine
NMR Nuclear magnetic resonance
o/n Over night
Papp Apparent bility
PBS Phosphate buffer system
Pd/C ium on carbon
Ph Phenyl
Phg/PhGly Phenyl glycine
Piv Pivalate
Pro Proline
pyr Pyridine
q Quartet
qd Quartet of doublets
quant Quantitative
quint Quintet
rt/RT Room temperature
s Singlet
SPhos 2-Dicyclohexylphosphino-2',6'-dimethoxybiphenyl
t Triplet
t-Bu tert-Butyl
TEMPO (2,2,6,6-Tetramethyl-piperidinyl)oxyl
Tf Trifluoromethanesulfonate
TFA Trifluoroacetic acid
THF Tetrahydrofuran
Thr Threonine
TLC Thin layer chromatography
tol. Toluene
UV iolet
Val Valine
w/v Weight to volume
w/w Weight to weight
X-Phos/XPOS/Xphos 2-Dicyclohexylphosphino-2′,4′,6′-
triisopropylbiphenyl
δ Chemical shift
μg Microgram
μL Microliter
EXAMPLES
Example LQ
Br O O
HO O
K2CO3, DMF
Cl Br Br
rt, 18 hr.
7-hydroxytetralone
89% Cl
1-bromo(bromomethyl)-
robenzene romochlorobenzyloxy)-
3,4-dihydronaphthalen-1(2H)-one
Pd(OPiv)2, P(4-F-Ph)3, t-BuCO2H, CuBr2, CHCl3, EtOAc
80 oC, 2 hr.
K2CO3, DMA, 60 oC, 24 hr.
Cl 80 - 95%
67 - 85%
3-chloro-10,11-dihydro-5H-
dibenzo[c,g]chromen-8(9H)-one
1. HO
O N
O Boc O
O H
DIPEA, CH3CN, 50°C
Cl N
Cl N
Br 2. NH4Cl, Toluene, N Boc
2-methoxyethanol,
110°C tert-butyl 2-(9-chloro-1,4,5,11-
9-bromochloro-10,11-dihydro-5H- tetrahydroisochromeno[4',3':6,7]naph
dibenzo[c,g]chromen-8(9H)-one tho[1,2-d]imidazolyl)pyrrolidine
carboxylate
O O
H B B
MnO2, CH2Cl2, rt N O O
Cl N
N Boc
Pd2dba3, KOAc, XPOS,
tert-butyl 2-(9-chloro-1,11- dioxane, 90°C
dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)pyrrolidinecarboxylate
O H
O O
O N N
O N H
B N
O N Boc
Pd(PPh3)4, PdCl2(dppf),
K2CO3, DME/ DMF, 85°C
tert-butyl 4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinecarboxylate
O 1. HCl, EtOH, 60°C
H O
N H
O O
N N 2.
N N N Boc O
H O
H N O
O H
tert-butyl 2-[9-(2-{1-[N-(methoxycarbonyl)valyl]pyrrolidin
yl}-1H-imidazolyl)-1,11- COMU, DIPEA, DMF, RT
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
rolidinecarboxylate
O H O
N H
O O
N N
N N N
H O
N O
[1-(2-{5-[2-(1-
{[(methoxycarbonyl)amino](phenyl)acetyl}pyrrolidin
yl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]-1H-imidazolyl}pyrrolidinyl)
methyloxobutanyl]carbamic acid
7-(2-bromochlorobenzyloxy)-3,4-dihydronaphthalen-1(2H)-one
To a stirred solution of 7-hydroxytetralone (13.9 g, 85.7 mmol) and 1-bromo
(bromomethyl)chlorobenzene (25.6 g, 90.0 mmol) in dimethylformamide (850 mL) was
added potassium carbonate (24 g, 172 mmol). The reaction was stirred under argon for 18
hours then diluted with ethyl acetate (1 L). The organics were washed three times with water
and once with brine. The c layer was then dried with magnesium sulfate, filtered and
concentrated. To the resulting oil was added methanol (500 mL) and the suspension was
agitated for thirty s. romochlorobenzyloxy)-3,4-dihydronaphthalen-1(2H)-
one (27.8 g, 89% yield) was isolated by filtration.
3-chloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
To a 1 L flask containing palladium(II) pivalate (1.18 g, 3.8 mmol), tri(4-
phenyl)phosphine (1.20 g, 3.8 mmol), pivalic acid (2.33 g, 22.8 mmol) and potassium
carbonate (31.8 g, 228 mmol) was added a solution of 7-(2-bromochlorobenzyloxy)-3,4-
dihydronaphthalen-1(2H)-one (27.8 g, 76.2 mmol) in dimethylacetamide (380 mL). The
flask was evacuated and backfilled with argon 5 times and then stirred under argon at 60 oC
for 24 hours. The reaction was cooled to room temperature and diluted with MTBE and
water. The resulting biphasic mixture was stirred for 3 hours and filtered through Celite,
g with MTBE. The organic layer of the filtrate was separated and then washed twice
with water and once with brine. The organics were then dried with magnesium sulfate,
filtered, concentrated and purified by flash column chromatography (Hexanes/DCM) to yield
ro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (14.4 g, 67% yield) as an offwhite
solid.
9-bromochloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
To a mixture of 3-chloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (14.8 g,
52 mmol) in chloroform (50 mL) and ethyl acetate (50 mL) was added copper(II) bromide
(24.3 g, 104 mmol). The reaction was heated to 80 oC for 2 hours and then cooled to room
temperature. The mixture was diluted with dichloromethane and washed twice with a 5:1
solution of saturated s ammonium de and aqueous ammonium hydroxide
(~38%), and washed once with water. The organic layer was dried with magnesium sulfate,
filtered and concentrated to yield 9-bromochloro-10,11-dihydro-5H-dibenzo[c,g]chromen-
8(9H)-one (18.5 g, >95% yield) with >95% purity.
Note: This reaction is not always this clean. Sometimes there is over-bromination
and sometimes there is significant starting material. These impurities can be removed by
flash column chromatography.
tert-Butyl 2-(9-chloro-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
2-yl)pyrrolidinecarboxylate
To a solution of (1R)(tert-butoxycarbonyl)cyclopentanecarboxylic acid (10.17 g,
47.25 mmol) and ochloro-10,11-dihydro-6H-naphtho[2,3-c]chromen-8(9H)-one
(5.7 mg, 15.7 mmol) in itrile (50 mL) was added diisopropylethylamine (11.11 mL, 64
mmol). The reaction was stirred at 50 oC for 4 hours and was then diluted with ethyl acetate.
The organics were washed with water and brine, dried (MgSO4) and concentrated. The
resulting crude residue was purified by flash chromatography to yield (2S)tert-butyl 2-(3-
chlorooxo-8,9,10,11-tetrahydro-5H-naphtho[c,g]chromenyl) pyrrolidine-1,2-
dicarboxylate (4.52 g, 58%). To a solution of (2S)tert-butyl 2-(3-chlorooxo-8,9,10,11-
tetrahydro-6H-naphtho[2,3-c]chromenyl) pyrrolidine-1,2-dicarboxylate (3.27 mg, 6.56
mmol) in a mixture of toluene (11 mL) and 2-methoxyethanol (0.7 mL) was added
ammonium acetate (5.06 g, 65.6 mmol). The reaction mixture was heated to 110 °C for 3
hours, cooled to room temperature and diluted with ethyl acetate. The organics were washed
with water and brine, dried (Na2SO4), and trated. The crude residue was purified by
flash chromatography to yield tert-butyl 2-(9-chloro-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinecarboxylate (1.95
g, 61%). LCMS-ESI+: calculated for ClN3O34 2: 477.98; observed [M+1]+: 478.47
utyl 2-(9-chloro-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
rolidinecarboxylate
To a solution of utyl 2-(9-chloro-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinecarboxylate (1.9
g, 3.96 mmol) in dichloromethane (35 mL) was added manganese(IV) oxide (17 g, 198
mmol). The reaction mixture was stirred at room temperature for 18 hours, diluted with ethyl
acetate. The organics were washed with water and brine, dried (Na2SO4), and concentrated.
The crude residue was purified by flash chromatography to yield tert-butyl 2-(9-chloro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinecarboxylate (1.52 g,
81%). LCMS-ESI+: calculated for C27H26ClN3O3: 475.9; observed [M+1]+: 476.45.
tert-Butyl 2-[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinecarboxylate
A degassed mixture of tert-butyl hloro-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinecarboxylate (1.52 g,
3.17 mmol), bis(pinacolato)diboron (1.21 g, 4.75 mmol), potassium acetate (934 mg, 9.52
mmol), tris(dibenzylideneacetone)palladium (116 mg, 0.13 mmol) and 2-
dicyclohexylphosphino-2’, 4’, 6’-tri-i-propyl-1, henyl (121 mg, 0.08 mmol) in 1,4-
dioxane (16 mL) was heated to 90 oC for 1.5 hours, cooled to room ature and diluted
with ethyl acetate. The organics were washed with water and brine, dried (Na2SO4), and
concentrated. The crude residue was purified by flash chromatography to yield tert-butyl 2-
[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinecarboxylate (1.7 g,
94%)
tert-Butyl 2-[9-(2-{1-[N-(methoxycarbonyl)valyl]pyrrolidinyl}-1H-imidazolyl)-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidine
carboxylate
To a solution of methyl (S)((S)(5-bromo-1H-imidazolyl)pyrrolidinyl)
methyloxobutanylcarbamate (1.48 g, 3.97 mmol), tert-butyl 2-[9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinecarboxylate (1.88 g, 1.48 mmol), tetrakis(triphenyl phosphine)palladium(0)
(191 mg, 0.16 mmol) and dichloro[1,1'-bis(diphenylphosphino) ferrocene]palladium(II) (242
mg, 0.33 mmol) in a mixture of 1,2-dimethoxyethane (37.0 mL) and dimethylformamide (6
mL) was added a solution of potassium carbonate (2M in water, 5 mL, 9.93 mmol). The
resulting mixture was degassed and then heated to 85 °C under argon for 18 hours. After
cooling to room ature, the reaction was d with ethyl acetate. The organics were
washed with water and brine, dried (Na2SO4), and concentrated. The crude residue was
purified by flash chromatography to yield tert-butyl 2-[9-(2-{1-[N-
xycarbonyl)valyl]pyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinecarboxylate (1.45
mg, 59%). LCMS-ESI+: calculated for C41H47N7O6 +: 734.87.
73 733.86; observed [M+1]
[1-(2-{5-[2-(1-{[(Methoxycarbonyl)amino](phenyl)acetyl}pyrrolidinyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]-1H-imidazol
yl}pyrrolidinyl)methyloxobutanyl]carbamic acid
A solution of tert-butyl 2-[9-(2-{1-[N-(methoxycarbonyl)valyl]pyrrolidinyl}-1H-
imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidine-
1-carboxylate (462 mg, 0.63 mmol), l (6 mL) and concentrated HCl (2 mL) was heated
to 60 °C for 1 hour. The reaction was concentrated and the crude material dissolved in DCM
(6 mL). This solution was concentrated and to this material was added a solution of (R)
(methoxycarbonylamino)phenylacetic acid (172 mg, 0.82 mmol) and COMU (311 mg,
0.73 mmol) in DMF (6 mL). To the resulting on was added diisopropylethylamine (330
L, 1.89 mmol). After stirring for 18 hours at room temperature, the reaction was diluted
with ethyl acetate, washed with water and brine, dried (Na2SO4), concentrated and purified by
ative reverse phase HPLC (Gemini, 15 to 45% ACN/H2O + 0.1% TFA). The product
fractions were lyophilized to give [1-(2-{5-[2-(1-
{[(methoxycarbonyl)amino](phenyl)acetyl}pyrrolidinyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]-1H-imidazolyl}pyrrolidin
yl)methyloxobutanyl]carbamic acid (231 mg, 45%). LCMS-ESI+: calculated for
C46H48N8O78: 824.92; ed [M+1]+: 826.00.
e LR
CN 1) HCl, MeOH CO2Me
2) Boc2O, NaHCO3 NaOH
H H
MeO2C N
Boc MeO2C N
(2S,4S)tert-butyl 2-methyl 4-cyanopyrrolidine-
1,2-dicarboxylate (2S,4S)tert-butyl 2,4-
dimethyl pyrrolidine-1,2,4-
tricarboxylate
CO2H
1) l MeI
(t-Bu)2pyr
2) NaBH4 H
MeO2C N
Boc MeO2C N AgOTf
(3S,5S)(tert-butoxycarbonyl) (2S,4S)tert-butyl 2-methyl 4-
(methoxycarbonyl)pyrrolidinecarboxylic acid (hydroxymethyl)pyrrolidine-1,2-
dicarboxylate
O O
LiOH
H H
MeO2C N HO2C N
Boc Boc
(2S,4S)tert-butyl 2-methyl (2S,4S)(tert-butoxycarbonyl)
4-(methoxymethyl)pyrrolidine- (methoxymethyl)pyrrolidine
1,2-dicarboxylate carboxylic acid
(2S,4S)tert-butyl methyl pyrrolidine-1,2,4-tricarboxylate
To a solution of (2S,4S)tert-butyl 2-methyl 4-cyanopyrrolidine-1,2-dicarboxylate
(9.0 g, 35.4 mmol) in MeOH (196 mL) was added HCl (4M in 1,4-dioxane, 100 mL, 403
mmol). The solution was stirred at room temperature for 16h and concentrated in vacuo. The
crude intermediate was dissolved in EtOAc (180 mL) and basified with aqueous bicarbonate
(sat.). t-butyl dicarbonate (8.5 g, 38.9 mmol) was added and the biphasic solution was
stirred at room temperature for 12h. The layers were then separated and the aqueous layer
was tracted with EtOAc. The combined organic layers were washed with brine, dried
over Na2SO4, and concentrated. The crude oil was ed by silica gel chromatography
(15% to 40% to 100% EtOAc/Hexanes) to provide (2S,4S)tert-butyl 2,4-dimethyl
pyrrolidine-1,2,4-tricarboxylate (9.56 g, 94%).
(3S,5S)(tert-butoxycarbonyl)(methoxycarbonyl)pyrrolidinecarboxylic acid
To a solution of (2S,4S)tert-butyl 2,4-dimethyl pyrrolidine-1,2,4-tricarboxylate
(9.56 g, 33.3 mmol) in THF (70 mL) at 0 °C (external temperature, ice bath) was added
NaOH (1N aqueous, 33 mL, 33.3 mmol) dropwise over 15 min. The solution was stirred at 0
°C for 5h before acidification with HCl (1N). The solution was extracted with EtOAc (3x).
The combined organic layers were dried over Na2SO4 and concentrated. The crude oil was
ed by silica gel chromatography (2% to 5% to 10% MeOH/CH2Cl2) to provide (3S,5S)-
1-(tert-butoxycarbonyl)(methoxycarbonyl)pyrrolidinecarboxylic acid (6.38g, 70%).
(2S,4S)tert-butyl 2-methyl roxymethyl)pyrrolidine-1,2-dicarboxylate
To a solution of (3S,5S)(tert-butoxycarbonyl)(methoxycarbonyl)pyrrolidine
carboxylic acid (6.38 g, 23.3 mmol) in THF (116 mL) at 0 °C (external temperature, ice bath)
was added Et3N (4.9 mL, 35.0 mmol) and ethyl chloroformate (2.7 mL, 28.0 mmol). The
ing solution was stirred at 0 °C for 45 min, during which time a white precipitate forms.
The reaction mixture was filtered through celite and concentrated.
The crude intermediate was dissolved in THF (59 mL) and cooled to 0 °C (external
temperature, ice bath). NaBH4 (4.41 g, 116.7 mmol) in H2O (59 mL) was slowly added and
the resulting solution was stirred at 0 °C for 2 h. The reaction mixture was diluted with
EtOAc and washed with H2O. The aqueous layer was tracted with EtOAc. The
combined c layers were dried over Na2SO4 and concentrated. The crude oil was
purified by silica gel chromatography (42% to 69% to 100% EtOAc/Hexanes) to provide
(2S,4S)tert-butyl 2-methyl 4-(hydroxymethyl)pyrrolidine-1,2-dicarboxylate (3.63 g, 60%).
(2S,4S)tert-butyl 2-methyl 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate
To a solution of (2S,4S)tert-butyl 2-methyl 4-(hydroxymethyl)pyrrolidine-1,2-
dicarboxylate (2.57 g, 9.9 mmol) in CH2Cl2 (50 mL) was added AgOTf (4.07 g, 15.8 mmol)
and 2,6-di-tert-butylpyridine (4.4 mL, 19.8 mmol). The reaction mixture was cooled to 0 °C
(external temperature, ice bath) and MeI (0.98 mL, 15.8 mmol) was slowly added. The
resulting slurry was stirred at 0 °C for 1.5 h and at room temperature for 1.5 h. The slurry
was diluted with CH2Cl2 and filtered through celite. The filtrate was concentrated to dryness,
dissolved in Et2O, and washed with HCl (1N) and brine. The aqueous layers were
backextracted with Et2O and the combined organic layers were dried over Na2SO4 and
concentrated. The crude oil was ed by silica gel chromatography (10% to 75% to 100%
EtOAc/Hexanes) to provide (2S,4S)tert-butyl 2-methyl 4-(methoxymethyl)pyrrolidine-1,2-
dicarboxylate (2.11 g, 78%). 1H-NMR: 400 MHz, (CDCl
3) δ: re of rotamers, major
ed) 4.20 (t, 1H), 3.71 (s, 3H), 3.67 (m, 1H), 3.34 (m, 2H), 3.30 (s, 3H), 3.16 (t, 1H),
2.43 (m, 2H), 1.74 (m, 1H), 1.38 (s, 9H).
(2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic acid
To a solution of (2S,4S)tert-butyl 2-methyl 4-(methoxymethyl)pyrrolidine-1,2-
dicarboxylate (2.11 g, 7.7 mmol) in a mixture of THF (38 mL) and MeOH (15 mL) was
added LiOH (2.5 M aqueous, 15 mL, 38.6 mmol). The resulting on was stirred at room
temperature for 2h, and acidified with aqueous HCl (1N). The desired t was extracted
with CH2Cl2 (4x). The combined organic layers were dried over Na2SO4 and concentrated to
provide (2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic acid
(2.0 g, 99%). 1H-NMR: 400 MHz, (CDCl
3) δ: (mixture of rotamers, major reported) 4.33 (t,
1H), 3.65 (m, 1H), 3.35 (m, 2H), 3.32 (s, 3H), 3.16 (t, 1H), 2.45 (m, 2H), 2.12 (m, 1H), 1.46
(s, 9H).
Example LR-1
Cl N
N Boc
1. O (2S,4R)-tert-butyl 2-(9-chloro-4,5-dihydro-
5H-naphtho
HO [c,g]chromeno[8,9-d]imidazolyl)
O N (methoxymethyl)
O O Boc idinecarboxylate
Cl DIPEA, CH3CN, 50°C
Br O
2. NH4OAc, Toluene,
2-methoxyethanol, O
9-bromochloro-10,11-dihydro- 110°C H
5H-dibenzo[c,g]chromen-8(9H)- N
one Cl
N Boc
(2S,4S)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-
naphtho
[c,g]chromeno[8,9-d]imidazolyl)
(methoxymethyl)
pyrrolidinecarboxylate
H O O
N B B
MnO2, CH2Cl2, rt Cl O O
N Boc
(2S,4S)-tert-butyl 2-(9-chloro-5H-naphtho[ Pd2dba3, KOAc, XPOS,
c,g]chromeno[8,9-d]imidazolyl) e, 90°C
(methoxymethyl)pyrrolidinecarboxylate
(2S,4S)-tert-butyl(9-chloro-4,5-dihydro-5H-naphtho[2,3-c]chromeno[8,9-d]imidazol-
2-yl)(methoxymethyl)pyrrolidinecarboxylate:
To a solution of ((S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidine
carboxylic acid (5.9 g, 23.1 mmol) and 9-bromochloro-10,11-dihydro-5H-
naphtho[c,g]chromen-8(9H)-one (5.6 mg, 15.4 mmol) in acetonitrile (60 mL) was added
diisopropylethylamine (5.35 mL, 30.8 mmol). The reaction was stirred at 50 oC for 18 hours
and was then diluted with ethyl e. The organics were washed with water and brine,
dried (MgSO4) and concentrated. The resulting crude residue was purified by flash
chromatography to yield (2S)tert-butyl(3-chlorooxo-8,9,10,11-tetrahydro-6H-
naphtho[2,3-c]chromenyl)-4(methoxymethyl) pyrrolidine-1,2-dicarboxylate (5.12 g, 61%).
To a solution of (2S)tert-butyl(3-chlorooxo-8,9,10,11-tetrahydro-6H-naphtho[2,3-
c]chromenyl)-4(methoxymethyl)pyrrolidine-1,2-dicarboxylate (5.11 mg, 9.42 mmol) in a
mixture of toluene (94 mL) and 2-methoxyethanol (0.1 mL) was added ammonium acetate
(23.5 g, 304 mmol). The reaction mixture was heated to 110 °C for 18 hours, cooled to room
temperature and diluted with ethyl acetate. The organics were washed with water and brine,
dried (Na2SO4), and concentrated. The crude residue was purified by flash chromatography to
yield (2S,4R)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-naphtho[c,g]chromeno[8,9-d]imidazol-
2-yl)(methoxymethyl)pyrrolidinecarboxylate (1.05g, 21%) and (2S,4S)-tert-butyl(9-
chloro-4,5-dihydro-6H-naphtho[2,3-c]chromeno[8,9-d]imidazolyl)
(methoxymethyl)pyrrolidinecarboxylate (2.0 g, 41%). LCMS-ESI+: calculated for
C29H32ClN3O4 2: 522.0; observed [M+1]+: 522.2.
(2S,4S)-tert-butyl(9-chloro-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)
(methoxymethyl)pyrrolidinecarboxylate.
To a solution of )-tert-butyl(9-chloro-4,5-dihydro-5H-
o[c,g]chromeno[8,9-d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate
(1.99 g, 3.82 mmol) in dichloromethane (30 mL) was added manganese(IV) oxide (10 g, 115
mmol). The reaction mixture was stirred at room temperature for 18 hours, diluted with ethyl
acetate. The organics were washed with water and brine, dried (Na2SO4), and concentrated.
The crude residue was purified by flash chromatography to yield(2S,4S)-tert-butyl(9-
chloro-6H-naphtho[2,3-c]chromeno[8,9-d]imidazolyl)methoxymethyl)pyrrolidine
ylate (1.05g, 21%) and (2S,4S)-tert-butyl(9-chloro-4,5-dihydro-6H-naphtho[2,3-
c]chromeno[8,9-d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate (1.64 g,
82%). LCMS-ESI+: ated for C29H30ClN3O42: 520.02; observed [M+1]+: 520.97.
(2S,4S)-tert-butyl(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-
htho[c,g]chromeno[8,9-d]imidazolyl)pyrrolidinecarboxylate:
A degassed mixture of (2S,4S)-tert-butyl(9-chloro-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)(methoxymethyl) pyrrolidinecarboxylate
(649 mg1.25 mmol), bis(pinacolato)diboron (635 mg, 2.5 mmol), potassium acetate (368 mg,
3.7 mmol), tris(dibenzylideneacetone)palladium (46 mg, 0.05 mmol) and 2-
ohexylphosphino-2’, 4’, 6’-tri-i-propyl-1, 1’-biphenyl (60 mg, 0.12 mmol) in 1,4-
dioxane (7 mL) was heated to 90 oC for 3 hours, cooled to room temperature and diluted with
ethyl acetate. The organics were washed with water and brine, dried (Na2SO4), and
concentrated. The crude residue was purified by flash chromatography to yield (2S,4S)-tertbutyl
4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)pyrrolidinecarboxylate (467 mg, 61%) LCMSESI
+: calculated for C35H42BN3O6: 611.54; observed [M+1]+: 612.96.
(2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-5H-naphtho[c,g]chromeno[8,9-
d]imidazolyl)-4(methoxymethyl)pyrrolidinecarboxylate
To a solution of (2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)pyrrolidine
carboxylate (467 mg, 0.76 mmol), methyl (S)((S)(5-bromo-1H-imidazol
yl)pyrrolidinyl)methyloxobutanylcarbamate (342 mg, 0.92 mmol),
tetrakis(triphenylphosphine) palladium(0) (44 mg, 0.04 mmol) and dichloro[1,1'-
bis(diphenylphosphino)ferrocene]palladium(II) (56 mg, 0.07 mmol) in a mixture of 1,2-
oxyethane (11.0 mL) and dimethylformamide (1.9 mL) was added a solution of
potassium carbonate (2M in water, 1.15 mL, 2.29 mmol). The resulting mixture was
degassed and then heated to 85 °C under argon for 18 hours. After cooling to room
temperature, the reaction was diluted with ethyl acetate. The organics were washed with
water and brine, dried (Na2SO4), and concentrated. The crude residue was purified by flash
chromatography to yield (2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-5H-naphtho[c,g] no [8,9-
d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate (180 mg, 67%). LCMS-ESI+:
calculated for N7O73 777.91; observed [M+1]+: 778.84.
methyl {2-[2-{9-[2-(1-{2-[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-
1H-imidazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
A solution of )-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
butanoyl)pyrrolidinyl)-1H-imidazolyl)-5H-naphtho[c,g]chromeno[8,9-
d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate (196 mg, 0.25 mmol), ethanol
(3 mL) and concentrated HCl (1 mL) was heated to 60 °C for 1 hour. The reaction was
concentrated and the crude material dissolved in DCM (6 mL). This solution was
trated and to this material was added a solution of (R)(methoxycarbonylamino)
phenylacetic acid (69 mg, 0.33 mmol) and COMU (124 mg, 029 mmol) in DMF (4 mL). To
the resulting solution was added ropylethylamine (130 L, 0.76 mmol). After stirring
for 2 hours at room temperature, the reaction was diluted with ethyl acetate, washed with
water and brine, dried (Na2SO4), concentrated and purified by preparative e phase
HPLC (Gemini, 15 to 45% ACN/H2O + 0.1% TFA). The product fractions were lyophilized
to give methyl {2-[2-{9-[2-(1-{2-[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidin
yl)-1H-imidazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate (84 mg, 39%). LCMSESI
+: calculated for C48H52N8O8: 868.98; observed [M+1]+: 870.11
Example LS
methyl {1-[2-{9-[2-(1-{2-[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-
dazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
A solution of (2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-5H-naphtho[c,g]chromeno[8,9-
d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate (116 mg, 0.15 mmol), ethanol
(5 mL) and concentrated HCl (1 mL) was heated to 60 °C for 1 hour. The reaction was
concentrated and the crude material dissolved in DCM (10 mL). This solution was
concentrated and to this material was added a solution of 2-methoxycarbonylamino
methylbutyric acid (38 mg, 0.22 mmol) and HATU (79 mg, 0.21 mmol) in DMF (1.4 mL).
To the resulting solution was added ropylethylamine (270 L, 1.5 mmol). After
stirring for 18 hours at room ature, the reaction was diluted with ethyl acetate, washed
with water and brine, dried (Na2SO4), trated and purified by preparative reverse phase
HPLC (Gemini, 15 to 45% ACN/H2O + 0.1% TFA). The product fractions were lyophilized
to give methyl {1-[2-{9-[2-(1-{2-[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidin
yl)-1H-imidazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate (58 mg, 13%).
LCMS-ESI+: calculated for C45H54N8O8: 834.96; observed [M+1]+: 835.70.
Example LT
O H
O O O N
N N
H H
O N
B N
O N
Boc Pd(PPh3)4, PdCl2(dppf),
K2CO3, DME/ DMF, 85°C
)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-
tetramethyl-1,3,2-dioxaborolanyl)-5H-naphtho
[c,g]chromeno[8,9-d]imidazolyl)pyrrolidine-
1-carboxylate
(2S,4S)-tert-butyl(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)azabicyclo[3.1.0]hexanyl)-1H-imidazolyl)-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxylate
To a solution of (2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)pyrrolidine
carboxylate (557 mg, 0.91 mmol), methyl (S)((1S,3S,5S)(5-bromo-1H-imidazolyl)-
icyclo[3.1.0]hexanyl)methyloxobutanylcarbamate (350 mg, 0.91 mmol),
is(triphenylphosphine) palladium(0) (53 mg, 0.04 mmol) and dichloro[1,1'-
bis(diphenylphosphino)ferrocene]palladium(II) (67 mg, 0.07 mmol) in a mixture of 1,2-
dimethoxyethane (11.0 mL) and dimethylformamide (1.9 mL) was added a solution of
potassium carbonate (2M in water, 1.37 mL, 2.7 mmol). The resulting mixture was degassed
and then heated to 85 °C under argon for 18 hours. After cooling to room temperature, the
reaction was diluted with ethyl acetate. The cs were washed with water and brine,
dried (Na2SO4), and concentrated. The crude residue was purified by flash chromatography
to yield (2S,4S)-tert-butyl 2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)azabicyclo[3.1.0]hexanyl)-1H-imidazolyl)-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate
(271 mg, 38%). LCMS-ESI+: calculated for N7O7. 789.92; observed [M+1]+:
790.76.
methyl {2-[2-{9-[2-(2-{2-[(methoxycarbonyl)amino]methylbutanoyl}
azabicyclo[3.1.0]hexyl)-1H-imidazolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate:
A solution of (2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)azabicyclo[3.1.0]hexanyl)-1H-imidazolyl)-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate
(196 mg, 0.25 mmol), ethanol (3 mL) and concentrated HCl (1 mL) was heated to 60 °C for 1
hour. The reaction was concentrated and the crude al dissolved in DCM (6 mL). This
on was concentrated and to this material was added a solution of (R)
(methoxycarbonylamino)phenylacetic acid (69 mg, 0.33 mmol) and COMU (124 mg, 0.29
mmol) in DMF (4 mL). To the resulting solution was added ropylethylamine (130 L,
0.76 mmol). After stirring for 2 hours at room temperature, the reaction was diluted with
ethyl acetate, washed with water and brine, dried (Na2SO4), concentrated and purified by
preparative reverse phase HPLC (Gemini, 15 to 45% ACN/H2O + 0.1% TFA). The product
fractions were lyophilized to give methyl {2-[2-{9-[2-(2-{2-[(methoxycarbonyl)amino]
methylbutanoyl}azabicyclo[3.1.0]hexyl)-1H-imidazolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}(methoxymethyl)pyrrolidin
yl]oxophenylethyl}carbamate (84 mg, 39%). LCMS-ESI+: calculated for
C49H52N8O8: 880.99; observed [M+1]+: 882.09
Example LZ
O O
O O
NH O (Bpin)2, Pd2(dba)3, X-Phos, O NH O
Cl B
N N N
N KOAc, dioxane, 90 oC O
tert-butyl (2S)(9-chloro-3,7- tert-butyl -[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolandihydroisochromeno
[3',4':5,6]naphtho[1,2- 2-yl)-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-
d]imidazolyl)pyrrolidinecarboxylate d]imidazolyl]pyrrolidinecarboxylate
-(2-bromochlorobenzyloxy)-3,4-dihydronaphthalen-1(2H)-one
To a stirred solution of 5-hydroxytetralone (2.0 g, 12.3 mmol) and 1-bromo
(bromomethyl)chlorobenzene (3.6 g, 12.7 mmol) in ylformamide (125 mL) was
added potassium carbonate (3.5 g, 25.1 mmol). The reaction was stirred under argon for 1
hour then diluted with ethyl acetate (1 L). The organics were washed three times with water
and once with brine. The organic layer was then dried with ium sulfate, filtered and
concentrated. To the resulting oil was added methanol (100 mL) and the suspension was
agitated for thirty s. 5-(2-bromochlorobenzyloxy)-3,4-dihydronaphthalen-1(2H)-
one (4.25 g, 94% yield) was isolated by filtration.
8-chloro-2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromenone
To a flask containing palladium(II) pivalate (68 mg, 0.22 mmol), tri(4-
fluorophenyl)phosphine (70 mg, 0.22 mmol), pivalic acid (135 mg, 1.3 mmol) and potassium
carbonate (1.83 g, 13.1 mmol) was added a solution of 5-(2-bromochlorobenzyloxy)-3,4-
dihydronaphthalen-1(2H)-one (1.61 g, 4.4 mmol) in yacetamide (23 mL). The flask
was evacuated and backfilled with argon 5 times and then stirred under argon at 60 oC for 24
hours. The reaction was poured directly onto a silica gel column and purified by flash
column chromatography (hexanes/DCM) to yield 8-chloro-2,3,4,6-tetrahydro-
enzo[c,h]chromenone (1.22 g, 97% yield) as an off-white solid.
2-bromochloro-2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromenone
To a mixture of 8-chloro-2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromenone (2.58 g,
9.1 mmol) in chloroform (9.1 mL) and ethyl acetate (9.1 mL) was added copper(II) e
(4.65 g, 19.9 mmol). The reaction was heated to 80 oC for 5 hours and then cooled to room
temperature. The mixture was diluted with dichloromethane and washed twice with a 5:1
solution of saturated aqueous ammonium chloride and aqueous um hydroxide
(~28%), and washed once with water. The organic layer was dried with magnesium sulfate,
filtered and concentrated. The crude material was purified by flash column chromatography
(hexanes/DCM) to yield 2-bromochloro-2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromen
one (2.45 g, 75% yield).
(2S)tert-butyl 2-(8-chlorooxo-2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromenyl)
pyrrolidine-1,2-dicarboxylate
To a solution of 2-bromochloro-2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromenone
(1.05 g, 2.9 mmol) and Boc-Pro-OH (1.75 g, 8.1 mmol) in itrile (9.0 mL) was added
diisopropylethylamine (1.5 mL, 8.7 mmol). The solution was stirred under argon at 50 oC for
two hours. Extra Boc-Pro-OH (620 mg, 2.9 mmol) and diisopropylethylamine (0.5 mL, 2.9
mmol) were added and the reaction was d at 50 oC for 16 hours. The reaction was
cooled to room temperature and d with ethyl acetate. The organics were washed with
water and brine, dried with magnesium sulfate and concentrated. The crude material was
purified by flash column tography and the product (2S)tert-butyl 2-(8-chloro
oxo-2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromenyl) pyrrolidine-1,2-dicarboxylate was
isolated as a mixture of diastereomers (0.99 g, 69% yield).
tert-butyl -(9-chloro-3,4,5,7-tetrahydroisochromeno[3',4':5,6]naphtho[1,2-
d]imidazolyl)pyrrolidinecarboxylate
To a solution of (2S)tert-butyl 2-(8-chlorooxo-2,3,4,6-tetrahydro-1H-
dibenzo[c,h]chromenyl) pyrrolidine-1,2-dicarboxylate (2.2 g, 4.4 mmol) in toluene (40
mL) was added ammonium acetate (7 g, 91 mmol). The reaction mixture was vigorously
refluxed for 3 hours, then cooled to room temperature and diluted with ethyl acetate. The
organics were washed with water and brine, dried with magnesium sulfate and concentrated.
The crude material was purified by flash column chromatography to yield utyl (2S)
(9-chloro-3,4,5,7-tetrahydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl)pyrrolidine
carboxylate (1.13 g, 54% yield) as well as red (2S)tert-butyl hlorooxo-
2,3,4,6-tetrahydro-1H-dibenzo[c,h]chromenyl) pyrrolidine-1,2-dicarboxylate (0.8 g, 36%).
). LCMS-ESI+: calculated for C27H28N3O3: ; observed [M+1]+: 478.54.
tert-butyl (2S)(9-chloro-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazol
yl)pyrrolidinecarboxylate
To a solution of Intermediate tert-butyl (2S)(9-chloro-3,4,5,7-
tetrahydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl)pyrrolidinecarboxylate (1.43
g, 3.0 mmol) in dichloromethane (30 mL) was added manganese(IV) oxide (15 g, 198 mmol).
The mixture was stirred for four hours at room temperature then filtered through Celite. The
MnO2 was thoroughly rinsed with dichloromethane and the total filtrate was concentrated to
yield tert-butyl (2S)(9-chloro-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazol
yl)pyrrolidinecarboxylate (1.37 g, 96% . This material was used without further
purification.
tert-butyl (2S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl]pyrrolidinecarboxylate
To a solution of tert-butyl (2S)(9-chloro-3,7-
oisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl)pyrrolidinecarboxylate (1.4 g,
2.9 mmol) in dioxane (20 mL) was added bis(pinacolato)diboron (1.5 g, 5.9 mmol),
tris(dibenzylideneacetone)dipalladium(0) (110 mg, 0.12 mmol), X-Phos (145 mg, 0.30 mmol)
and potassium acetate (870 mg, 8.9 mmol). The mixture was degassed with a stream of
argon for ten minutes. The degassed reaction was heated under argon to 90 oC for 2.5 hours
then cooled to room temperature and diluted with ethyl acetate. The organics were washed
with water and brine, dried with magnesium sulfate and concentrated. The crude material
was purified by flash column chromatography (DCM/EtOAc) to yield tert-butyl (2S)[9-
,5-tetramethyl-1,3,2-dioxaborolanyl)-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-
azolyl]pyrrolidinecarboxylate (1.5 g, 90% .
methyl [(2S)methyloxo{(2S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-
3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl]pyrrolidinyl}butan
yl]carbamate
A solution of tert-butyl (2S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl]pyrrolidinecarboxylate (0.98 g,
1.7 mmol), concentrated HCl (2 mL) and ethanol (20 mL) was heated to 60 oC for 2 hours.
The reaction was concentrated and redissolved in a minimal amount of methanol. An equal
volume of dichloromethane was added and the solution was again concentrated.
Dichloromethane was added to the resulting e and concentrated off two more times.
The resulting crude material was dissolved in dimethylformamide (17 mL). To this solution
was added (S)(methoxycarbonylamino)methylbutanoic acid (455 mg, 2.6 mmol),
HATU (955 mg, 2.5 mmol) and diisopropylethylamine (3 mL, 17 mmol). The reaction was
stirred at room temperature for one hour then diluted with ethyl acetate. The cs were
washed with water (x2) and brine, dried with magnesium sulfate and concentrated. The
resulting residue was purified by flash column tography to yield Intermediate methyl
[(2S)methyloxo{(2S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl]pyrrolidinyl}butan
yl]carbamate (780 mg, 72% yield over 2 steps).
tert-butyl (2R)[5-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl]pyrrolidinecarboxylate
A mixture of Pentacyclic Intermediate methyl [(2S)methyloxo{(2S)[9-
(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-
d]imidazolyl]pyrrolidinyl}butanyl]carbamate (780 mg, 1.3 mmol), (S)-tert-butyl 2-
(5-bromo-1H-imidazolyl)pyrrolidinecarboxylate (450 mg, 1.4 mmol),
tetrakis(triphenylphosphine)palladium(0) (30 mg, 0.03 mmol), PdCl2(dppf) (60 mg, 0.08
mmol), 2M aqueous potassium ate (1.9 mL, 3.9 mmol), dimethoxyethane (10 mL) and
dimethylformamide (2 mL) was degassed with argon for 15 s. The reaction was then
heated to 85 oC for 3 hours. Upon completion, the reaction was cooled to room temperature,
diluted with ethyl acetate and ed through Celite. The filtrate was washed with water and
brine, dried (MgSO4) and concentrated. The ing crude material was purified by flash
column tography (EtOAc/MeOH) to yield Intermediate tert-butyl (2R)[5-(2-{(2S)-
1-[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate (390 mg, 43% yield).
methyl {(2S)[(2R)(5-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate
A mixture of Intermediate tert-butyl (2R)[5-(2-{(2S)[N-(methoxycarbonyl)-L-
valyl]pyrrolidinyl}-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]pyrrolidinecarboxylate (390 mg, 0.53 mmol), concentrated HCl (2 mL) and
l (10 mL) was heated to 60 oC for 2 hours. The reaction was concentrated and
redissolved in a l amount of methanol. An equal volume of dichloromethane was
added and the solution was again concentrated. Dichloromethane was added to the resulting
residue and concentrated off two more times. One half of the crude al (~0.27 mmol)
was dissolved in dimethylformamide (2.5 mL). To this solution was added (S)
(methoxycarbonylamino)methylbutanoic acid (66 mg, 0.38 mmol), HATU (140 mg, 0.37
mmol) and diisopropylethylamine (0.48 mL, 2.7 mmol). The reaction was stirred at room
temperature for 2 hours, and then diluted with acetonitrile (2 mL) and methanol (2 mL). To
this solution was added ten drops of 5M aqueous NaOH solution and stirring was continued
for 30 minutes. The reaction was diluted with ethyl acetate and the organic layer was washed
with water and brine. The combined aqueous washings were extracted three times with ethyl
acetate, and the combined organic layers were dried (MgSO4) and concentrated. The crude
material was purified by e phase HPLC (Gemini, 15 to 45% ACN/H2O + 0.1% TFA) to
yield methyl {(2S)[(2R)(5-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate (140 mg, 67%
yield over 2 . LCMS-ESI+: calculated for N8O7: 790.91; observed [M+1]+:
791.71.
Example MA
This compound was made in an analogous manner to methyl 1-[(2R)(5-{2-
1-{(2S)[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]methyloxobutanyl}carbamate, substituting (R)(methoxycarbonylamino)
phenylacetic acid for (S)(methoxycarbonylamino)methylbutanoic acid and substituting
COMU for HATU in the final amide coupling step. LCMS-ESI+: calculated for C46H48N8O7:
824.92; observed [M+1]+: 825.72.
Example MB
tert-butyl (2S)[9-(2-{(2R)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1H-
imidazolyl)-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazol
yl]pyrrolidinecarboxylate
A mixture of tert-butyl (2S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl]pyrrolidinecarboxylate (450
mg, 0.79 mmol), methyl (S)((S)(5-bromo-1H-imidazolyl)pyrrolidinyl)methyl-
1-oxobutanylcarbamate (325 mg, 0.87 mmol), tetrakis(triphenylphosphine)palladium(0)
(30 mg, 0.02 mmol), PdCl2(dppf) (35 mg, 0.05 mmol), 2M s potassium ate (1.2
mL, 2.4 mmol), dimethoxyethane (6.8 mL) and dimethylformamide (1.2 mL) was degassed
with argon for 15 minutes. The reaction was then heated to 85 oC for 2.5 hours. Upon
completion, the reaction was cooled to room temperature, diluted with ethyl acetate and
filtered through Celite. The filtrate was washed with water and brine, dried (MgSO4) and
concentrated. The resulting crude material was purified by flash column chromatography
(EtOAc/MeOH) to yield tert-butyl (2S)[9-(2-{(2R)[N-(methoxycarbonyl)-L-
valyl]pyrrolidinyl}-1H-imidazolyl)-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-
azolyl]pyrrolidinecarboxylate (270 mg, 46% yield).
methyl {(2S)[(2R)(5-{2-[(2S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}pyrrolidinyl]-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate:
A e of tert-butyl -[9-(2-{(2R)[N-(methoxycarbonyl)-L-
valyl]pyrrolidinyl}-1H-imidazolyl)-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-
d]imidazolyl]pyrrolidinecarboxylate (270 mg, 0.37 mmol), trated HCl (1.5 mL)
and ethanol (8 mL) was heated to 60 oC for 1 hour. The reaction was concentrated and
redissolved in a minimal amount of methanol. An equal volume of dichloromethane was
added and the solution was again concentrated. Dichloromethane was added to the resulting
residue and concentrated off two more times. The crude al was dissolved in 5:1
dichloromethane/dimethylformamide (3.8 mL). To this solution was added (R)
(methoxycarbonylamino)phenylacetic acid (96 mg, 0.46 mmol), COMU (190 mg, 0.44
mmol) and diisopropylethylamine (0.20 mL, 1.1 mmol). The reaction was stirred at 0 oC for
minutes then warmed to room temperature. Upon completion, the reaction was diluted
with acetonitrile (2 mL) and methanol (2 mL). To this solution was added ten drops of 5M
aqueous NaOH solution and stirring was continued for 30 minutes. The on was diluted
with ethyl acetate and the organic layer was washed with water and brine. The combined
aqueous washings were extracted three times with ethyl acetate, and the combined organic
layers were dried (MgSO4) and concentrated. The crude material was purified by reverse
phase HPLC (Gemini, 15 to 45% ACN/H2O + 0.1% TFA) to yield methyl {(2S)[(2R)
(5-{2-[(2S){(2R)[(methoxycarbonyl)amino]phenylacetyl}pyrrolidinyl]-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]methyloxobutanyl}carbamate (155 mg, 51% yield over 2 steps). LCMS-ESI+:
calculated for C46H48N8O7: 824.92; ed [M+1]+: 825.67.
Example MC
dimethyl (2S,2'S)-1,1'-((2S,2'S)-2,2'l-pyrrolidinyl)-5H-naphtho[c,g]chromeno[8,9-
d]imidazolyl)-1H-imidazolyl)pyrrolidinyl))bis(3-methyloxobutane-2,1-
diyl)dicarbamate
This compound was made in an analogous manner to methyl {(2S)[(2R)(5-{2-
[(2S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]methyloxobutanyl}carbamate, substituting 7-hydroxytetralone for 5-hydroxy-
1-tetralone in the first step of the sequence. All reactions in the sis gave r
product yields as in the synthesis of methyl {(2S)[(2R)(5-{2-[(2S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]-
3-methyloxobutanyl}carbamate. LCMS-ESI+: calculated for N8O7: 790.91;
observed : 791.6.
Example MD
NH O O
O O
N NH
N N N
H O
methyl [1-(2-{5-[2-(1-{[(methoxycarbonyl)amino]methyl
anyl}pyrrolidinyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]-1H-
imidazolyl}pyrrolidinyl)-phenyloxoacetyl]carbamate
This compound was made in an analogous manner to dimethyl (2S,2'S)-1,1'-((2S,2'S)-
2,2'l-pyrrolidinyl)-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)-1H-imidazol
yl)pyrrolidinyl))bis(3-methyloxobutane-2,1-diyl)dicarbamate, substituting (R)
(methoxycarbonylamino)phenylacetic acid for (S)(methoxycarbonylamino)
methylbutanoic acid and substituting COMU for HATU in the final amide coupling step.
LCMS-ESI+: calculated for C46H48N8O7: 824.92; observed [M+1]+: 825.67.
Example ME
dimethyl (2S,2'S)-1,1'-((2S,2'S)-2,2'l-pyrrolidinyl)-7H-dihydro-
naphtho[c,g]chromeno[8,9-d]imidazolyl)-1H-imidazolyl)pyrrolidinyl))bis(3-
methyloxobutane-2,1-diyl)dicarbamate
This compound was made in an analogous manner to dimethyl S)-1,1'-((2S,2'S)-
2,2'l-pyrrolidinyl)-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)-1H-imidazol
yl)pyrrolidinyl))bis(3-methyloxobutane-2,1-diyl)dicarbamate, omitting the MnO2
oxidation of tert-butyl 2-(9-chloro-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)pyrrolidinecarboxylate. LCMS-ESI+: ated for C43H52N8O7: 792.40;
observed [M+1]+: .
Example MF
methyl [1-(2-{5-[2-(1-{[(methoxycarbonyl)amino]methyloxobutanyl}pyrrolidin-
2-yl)-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]-1H-
imidazolyl}pyrrolidinyl)-phenyloxoacetyl]carbamate
This compound was made in an analogous manner to dimethyl (2S,2'S)-1,1'-((2S,2'S)-
2,2'l-pyrrolidinyl)-7H-dihydro-naphtho[c,g]chromeno[8,9-d]imidazolyl)-1H-imidazol-
2-yl)pyrrolidinyl))bis(3-methyloxobutane-2,1-diyl)dicarbamate, substituting (R)
(methoxycarbonylamino)phenylacetic acid for (methoxycarbonylamino)
methylbutanoic acid and substituting COMU for HATU in the final amide coupling step.
LCMS-ESI+: calculated for C46H50N8O7: 826.94; observed [M+1]+: 827.71.
Example MG
O O O
N O NH O 3)4, PdCl2(dppf),
Br B
N N O N N
K2CO3, DME, DMF, 85 oC
methyl (S)((S)(5-bromo-1H- tert-butyl (2S)[9-(4,4,5,5-tetramethylimidazolyl
)pyrrolidinyl) 1,3,2-dioxaborolanyl)-3,4,5,11-
methyloxobutanylcarbamate ydroisochromeno[4',3':6,7]naphtho[
1,2-d]imidazolyl]pyrrolidine
carboxylate
O O
NH 1) HCl, EtOH, 60 oC
O O HN
O NH O
N O O
2) Moc-Val-OH, COMU,
N N
N N DIPEA, DMF
H HO
tert-butyl (2S)[9-(2-{(2R)[N-(methoxycarbonyl)-L- (methoxycarbonylamino)-
valyl]pyrrolidinyl}-1H-imidazolyl)-3,4,5,11- 2-phenylacetic acid
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
2-yl]pyrrolidinecarboxylate
NH O O
O O
N NH
N N N N
[1-(2-{5-[2-(1-{[(methoxycarbonyl)amino](phenyl)acetyl}pyrrolidinyl)-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]-1H-imidazol
yl}pyrrolidinyl)methyloxobutanyl]carbamic acid
This compound was made in an analogous manner to methyl 1-[(2R)(5-{2-
[(2S){(2R)[(methoxycarbonyl)amino]phenylacetyl}pyrrolidinyl]-3,7-
dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]methyloxobutanyl}carbamate, substituting tert-butyl (2S)[9-(2-{(2R)[N-
(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1H-imidazolyl)-3,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinecarboxylate for
tert-butyl (2S)[9-(2-{(2R)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1H-imidazol-
5-yl)-3,7-dihydroisochromeno[3',4':5,6]naphtho[1,2-d]imidazolyl]pyrrolidine
carboxylate. LCMS-ESI+: calculated for C46H50N8O7: 826.94; observed [M+1]+: 827.64.
Example MM
O 1. HCl, EtOH, 60°C
O N
N 2.
B O
O N Boc O
H N O
(2S,4S)-tert-butyl hoxymethyl)(9-(4,4,5,5- O H
tetramethyl-1,3,2-dioxaborolanyl)-1,11- HATU, DIPEA, DMF, RT
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidine-
1-carboxylate
O Boc N
H Br
O N N N
B N H
O N
N O Pd(PPh3)4, PdCl2(dppf),
H K2CO3, DME/ DMF, 85°C
(2S,4S)-methyl {4-(methoxymethyl)[(9-(4,4,5,5-
tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
2-yl)pyrrolidin-1yl]methyloxobutanyl}carbamate
H 1. HCl, EtOH, 60°C
Boc N N
N N N
H O
N O
H O
O H N O
tert-butyl (2S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-
L-valyl]methylpyrrolidinyl}-1,11-dihydroisochromeno O H
[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl COMU, DIPEA, DMF, RT
]pyrrolidinecarboxylate
H O
O O H
N N
N N N
N O
methyl {(1R)[(2S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)
amino]methylbutanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol-
2-yl)pyrrolidinyl]oxophenylethyl}carbamate
(2S,4S)-methyl {4-(methoxymethyl)[(9-(4,4,5,5-tetramethyl-1,3,2-dioxa borolanyl)-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl) pyrrolidin-1yl]
methyloxobutanyl}carbamate
A solution of (2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)- 1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]-imidazol
yl)pyrrolidinecarboxylate (424 mg, 0.69 mmol), ethanol (6 mL) and concentrated HCl (2
mL) was heated to 60 °C for 1 hour. The reaction was concentrated and the crude material
dissolved in DCM (10 mL). This solution was concentrated and to this material was added a
solution of 2-methoxycarbonylaminomethylbutyric acid (152 mg, 0.86 mmol) and HATU
(303 mg, 0.79 mmol) in DMF (6 mL). To the resulting solution was added
ropylethylamine (360 L, 2.08 mmol). After stirring for 2 hours at room temperature,
the reaction was diluted with ethyl acetate, washed with 5% NaHCO3 on, water and
brine, dried (Na2SO4), concentrated and dried under vacuum to give )-methyl {4-
(methoxymethyl)[(9-(4,4,5,5-tetramethyl-1,3,2-dioxaboro lanyl)-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinyl]methyl
oxobutanyl}carbamate.
tert-butyl(2S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]methylpyrroli din
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl]pyrrolidinecarboxylate
To a solution of (2S, 4S)-methyl{4-(methoxymethyl)[(9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroiso chromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)pyrrolidin-1yl]methyloxobutanyl}carbamate (0.69 mmol), (S)-tert-butyl 2-(5-
bromo-1H-imidazolyl)pyrrolidinecarboxylate (220 mg, 0.69 mmol),
tetrakis(triphenylphosphine) palladium(0) (24 mg, 0.02 mmol) and dichloro[1,1'-
bis(diphenylphosphino) ferrocene]palladium(II) (31 mg, 0.04 mmol) in a e of 1,2-
dimethoxyethane (6.0 mL) and dimethylformamide (1.0 mL) was added a solution of
potassium carbonate (2M in water, 1.04 mL, 2.0 mmol). The resulting mixture was degassed
and then heated to 85 °C under argon for 18 hours. After cooling to room temperature, the
on was diluted with ethyl acetate. The organics were washed with water and brine,
dried (Na2SO4), and concentrated. The crude residue was purified by flash chromatography
to yield (tert-butyl -[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]pyrrolidinecarboxylate (145 mg, 27%).
methyl{(1R)[(2S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}(methoxymethyl)pyrrolidinyl]-1,11-dihydroiso
chromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidinyl]
oxophenylethyl}carbamate
A solution of utyl (2S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno [4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]pyrrolidinecarboxylate (145 mg, 0.18 mmol), ethanol (3 mL) and
concentrated HCl (1 mL) was heated to 60 °C for 1 hour. The reaction was concentrated and
the crude material dissolved in DCM (6 mL). This solution was concentrated and to this
material was added a solution of (R)(methoxycarbonylamino)phenylacetic acid (51 mg,
0.24 mmol) and COMU (92 mg, 021 mmol) in DMF (3 mL). To the resulting solution was
added diisopropylethylamine (100 L, 0.56 mmol). After stirring for 2 hours at room
temperature, the reaction was diluted with ethyl acetate, washed with water and brine, dried
(Na2SO4), concentrated and purified by preparative reverse phase HPLC (Gemini, 15 to 43%
ACN/H2O + 0.1% TFA). The product ons were lyophilized to give methyl 2-
[(2S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno [4',3':6,7]naphtho[1,2-
azolyl}-1H-imidazolyl)pyrrolidinyl]oxophenylethyl}carbamate (68 mg,
39%). MS (ESI) m/z 870 [M + H]+. 1H NMR (400 MHz, dmso) δ 8.71 (s, 1H), 8.22 (d, 1H,
J = 8 Hz), 8.09 (m, 1H), 7.88 – 7.63 (m, 6H), 7.36 - 7.29 (m, 6H), 5.41 (d, 1H, J = 8.4 Hz),
.30 – 5.24 (m, 2H), 5.14 – 5.10 (m, 1H), 4.13 -3.09 (m, 15H), 2.47 - 1.80 (m, 8H), 0.80 (dd,
6H, J = 6.4 Hz, J = 23 Hz).
Example MN
tert-butyl(2S,4S)[9-(2-{(2S4S)[N-(methoxycarbonyl)-L-valyl]methyl pyrrolidin-
2-yl}-1H-imidazolyl)-3,11-dihydroisochromeno[4',3':6,7]naphtho [1,2-d]imidazol
yl](methoxymethyl)pyrrolidinecarboxylate
To a solution of (2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7] o [1,2-d]imidazol
yl)pyrrolidinecarboxylate (438 mg, 0.72 mmol), methyl (S)((2S,4S)(5-bromo-1H-
imidazolyl)methylpyrrolidinyl)methyloxobutanylcarbamate (276 mg, 0.72
mmol), is(triphenylphosphine) palladium(0) (41 mg, 0.04 mmol) and dichloro[1,1'-
bis(diphenylphosphino) ferrocene]palladium(II) (52 mg, 0.07 mmol) in a mixture of 1,2-
oxyethane (8.6 mL) and dimethylformamide (1.5 mL) was added a solution of
potassium carbonate (2M in water, 1.07 mL, 2.15 mmol). The ing mixture was
ed and then heated to 85 °C under argon for 18 hours. After cooling to room
temperature, the reaction was diluted with ethyl acetate. The organics were washed with
water and brine, dried (Na2SO4), and concentrated. The crude residue was purified by flash
chromatography to yield tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1H-imidazolyl)-3,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]-
4-(methoxymethyl)pyrrolidinecarboxylate (182 mg, 32%).
methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
A solution of tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-3,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
azolyl](methoxy )pyrrolidinecarboxylate (182 mg, 0.18 mmol), ethanol
(3 mL) and concentrated HCl (1 mL) was heated to 60 °C for 1 hour. The reaction was
concentrated and the crude material dissolved in DCM (6 mL). This solution was
concentrated and to this material was added a solution of (R)(methoxycarbonylamino)
phenylacetic acid (47 mg, 0.23 mmol) and COMU (85 mg, 0.2 mmol) in DMF (3 mL). To
the resulting solution was added diisopropylethylamine (90 L, 0.52 mmol). After stirring
for 2 hours at room temperature, the reaction was diluted with ethyl acetate, washed with
water and brine, dried (Na2SO4), concentrated and purified by preparative reverse phase
HPLC (Gemini, 15 to 49% O + 0.1% TFA). The product fractions were lyophilized
to give methyl{(2S)[(2S,4S)(5-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)-methylpyrrolidinyl]methyl-
1-oxobutanyl}carbamate (32 mg, 39%). MS (ESI) m/z 884 [M + H]+.
1H NMR (400 MHz, dmso) δ 8.70 (s, 1H), 8.21 (d, 1H, J = 8 Hz), 8.08 (s, 1H), 7.90 –
7.64 (m, 6H), 7.34 – 7.31 (m, 3H), 7.64 (d, 1H, J = 8.4 Hz), 5.47 (d, 1H, J = 7.6 Hz), 5.28 –
.25 (m, 3H), 5.05 – 5.01 (m, 1H), 4.19 – 4.04 (m, 3H), 3.67 – 3.15 (m, 15H), 2.51 -2.46 (m,
4H), 1.95 – 1.92 (m, 2H), 1.82 – 1.76 (m, 1H), 1.10 (d, 3H, J = 6 Hz), 0.75 (dd, 6H, J = 6.8
Hz, J = 14 Hz).
e MO
methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methoxymethylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate
To a solution of methyl 1-[(2S,4S)(5-{2-[(2S,4S)
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7] naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)(methyl)pyrrolidinyl]methyloxobutan
yl}carbamate (57 mg, 0.08 mmol), 2-methoxycarbonylaminomethylbutyric acid (19 mg,
0.1 mmol), HATU (303 mg, 0.79 mmol) in DMF (1 mL) was added diisopropylethylamine
(43 L, 0.24 mmol). After stirring for 2 hours at room temperature, the reaction was diluted
with ethyl acetate, washed with 5% NaHCO3 solution, water and brine, dried (Na2SO4),
concentrated and purified by ative reverse phase HPLC (Gemini, 15 to 43% ACN/H2O
+ 0.1% TFA). The product fractions were lyophilized to give methyl {(2S)[(2S,4S)(5-
{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]methyl butanoyl}
methoxymethylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)methylpyrrolidinyl]methyl- utanyl}carbamate.
(13 mg, 19%). MS (ESI) m/z 850 [M + H]+.
1H NMR (400 MHz, dmso) δ 8.66 (s, 1H), 8.28 – 8.13 (m, 1H), 8.12 – 7.99 (m, 1H),
7.90 – 7.75 (m, 3H), 7.73 – 7.65 (m, 1H), 7.63 – 7.57 (m, 1H), 7.34 – 7.19 (m, 2H), 5.30 –
.24 (m, 2H), 5.21 – 4.95 (m, 2H), 4.33 – 3.93 (m, 6H), 3.23 -3.58 (m, 12H), 2.76 – 2.59 (m,
2H), 2.02 – 1.73 (m, 6H), 1.12 – 1.07 (m, 3H), 0.86 – 0.68 (m, 12H).
Example MP
tert-butyl(2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methyl pyrrolidin-
2-yl}-1H-imidazolyl)-3,11-dihydroisochromeno[4',3':6,7]naphtho [1,2-d]imidazol
yl](methoxymethyl)pyrrolidinecarboxylate
To a solution of (2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7] naphtho[1,2-d]imidazol
yl)pyrrolidinecarboxylate (217 mg, 0.35 mmol), methyl (S)((2S,5S)(5-bromo-1H-
imidazolyl)methylpyrrolidinyl)methyloxobutanylcarbamate (170 mg, 0.39
mmol), tetrakis(triphenylphosphine) palladium(0) (21 mg, 0.02 mmol) and ro[1,1'-
bis(diphenylphosphino) ferrocene]palladium(II) (26 mg, 0.04 mmol) in a mixture of 1,2-
dimethoxyethane (4.3 mL) and dimethylformamide (0.75 mL) was added a solution of
potassium carbonate (2M in water, 0.53 mL, 1.06 mmol). The resulting mixture was
degassed and then heated to 85 °C under argon for 18 hours. After cooling to room
temperature, the reaction was diluted with ethyl acetate. The organics were washed with
water and brine, dried (Na2SO4), and trated. The crude residue was purified by flash
chromatography to yield tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1H-imidazolyl)-3,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxy methyl)pyrrolidine-
1-carboxylate (110 mg, 39%).
methyl{(2S)[(2S,5S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methoxymethylpyrrolidinyl]-1,11-dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
A solution of tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-3,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxy methyl)pyrrolidinecarboxylate (108 mg, 0.14 mmol), ethanol
(2 mL) and concentrated HCl (0.7 mL) was heated to 60 °C for 1 hour. The reaction was
concentrated and the crude material dissolved in DCM (10 mL). This solution was
trated and to this al was added a solution of 2-methoxycarbonylamino
methylbutyric acid (31 mg, 0.18 mmol) and HATU (60 mg, 0.16 mmol) in DMF (2 mL). To
the resulting solution was added diisopropylethylamine (70 L, 0.41 mmol). After stirring
for 2 hours at room temperature, the on was diluted with ethyl acetate, washed with 5%
NaHCO3 solution, water and brine, dried (Na2SO4). After stirring for 2 hours at room
temperature, the reaction was diluted with ethyl acetate, washed with 5% NaHCO3 solution,
water and brine, dried (Na2SO4), concentrated and purified by ative reverse phase
HPLC (Gemini, 15 to 43% ACN/H2O + 0.1% TFA). The product fractions were lyophilized
to give methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methoxy methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
pyrrolidinyl]methyloxobutanyl}carbamate (52 mg, 45%). MS (ESI) m/z
850 [M + H]+.
1H NMR (400 MHz, dmso) δ 8.69 (s, 1H), 8.18 (d, 1H, J = 7.6 Hz), 7.99 – 7.86 (m,
4H), 7.72 (s, 1H), 7.64 (d, 1H, J = 8.8 Hz), 7.51 (d, 1H, J = 8 Hz), 7.23 (d, 1H, J = 8.4 Hz),
.29 (s, 2H), 5.22 – 5.18 (m, 1H), 5.01 – 4.70 (m, 1H), 4.64 – 4.61 (m, 1H), 4.21-4.17 (m,
1H), 4.09-4.05 (m, 1H), 3.92 – 3.88 (m, 1H), 3.59 – 3.08 (m, 14H), 2.67 – 1.83 (m, 7H), 1.43
(d, 3H, J = 6.4 Hz), 0..91-0.71 (m, 12H).
e MQ
(2S,4R)-tert-butyl(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-dioxa borolan
yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl) pyrrolidine
carboxylate
A degassed mixture of (2S,4R)-tert-butyl(9-chloro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl) pyrrolidine-
1-carboxylate (335 mg, 0.64 mmol), bis(pinacolato)diboron (246 mg, 0.96 mmol), potassium
acetate (190 mg, 1.9 mmol), tris(dibenzylideneacetone) palladium (24 mg, 0.02 mmol) and 2-
dicyclohexylphosphino-2’, 4’, 6’-tri-i-propyl-1, 1’-biphenyl (31 mg, 0.06 mmol) in 1,4-
dioxane (3.3 mL) was heated to 90 oC for 3 hours, cooled to room temperature and diluted
with ethyl e. The cs were washed with water and brine, dried (Na2SO4), and
concentrated. The crude residue was purified by flash tography to yield (2S,4R)-tertbutyl
4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol yl)pyrrolidinecarboxylate (379
mg, 96%).
(2S,4R)-tert-butyl(9-(2-((S)((S)(methoxycarbonylamino)methyl
butanoyl)pyrrolidinyl)-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]
naphtho[1,2-d]imidazol yl)-4(methoxymethyl) idinecarboxylate.
To a solution of (2S,4R)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)- ihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
pyrrolidinecarboxylate (299 mg, 0.49 mmol), methyl (S)((S)(5-bromo-1H-imidazol-
2-yl)pyrrolidinyl)methyloxobutanylcarbamate (217 mg, 0.58 mmol),
tetrakis(triphenylphosphine) ium(0) (28 mg, 0.02 mmol) and dichloro[1,1'-
bis(diphenylphosphino)ferrocene]palladium(II) (35 mg, 0.04 mmol) in a mixture of 1,2-
dimethoxyethane (4.3 mL) and dimethylformamide (0.75 mL) was added a on of
potassium carbonate (2M in water, 0.73 mL, 1.46 mmol). The resulting mixture was
degassed and then heated to 85 °C under argon for 18 hours. After cooling to room
temperature, the reaction was diluted with ethyl acetate. The organics were washed with
water and brine, dried (Na2SO4), and concentrated. The crude residue was purified by flash
chromatography to yield (2S,4R)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxylate (170 mg, 45%).
methyl{(1R)[(2S,4R)(9-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl)-1H-imidazolyl]-1,11-dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl}(methoxymethyl)pyrrolidinyl]oxophenylethyl
}carbamate
A solution of (2S,4R)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxy late (170 mg, 0.22 mmol), ethanol (3 mL) and concentrated HCl (1 mL) was heated
to 60 °C for 1 hour. The reaction was concentrated and the crude material dissolved in DCM
(6 mL). This solution was concentrated and to this material was added a solution of (R)
xycarbonylamino)phenylacetic acid (59 mg, 0.28 mmol) and COMU (108 mg, 0.25
mmol) in DMF (3 mL). To the resulting solution was added diisopropylethylamine (110 L,
0.66 mmol). After stirring for 2 hours at room ature, the on was diluted with
ethyl acetate, washed with water and brine, dried (Na2SO4), concentrated and purified by
preparative reverse phase HPLC (Gemini, 15 to 44% ACN/H2O + 0.1% TFA). The product
fractions were lyophilized to give methyl {(1R)[(2S,4R)(9-{2-[(2S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-1H-imidazolyl]-1,11-
dihydroisochromeno[4',3':6,7]-naphtho[1,2-d]imidazolyl}-(methoxymethyl) pyrrolidin
yl]oxo-phenylethyl}carbamate (67 mg, 35%). MS (ESI) m/z 870 [M + H]+. 1H NMR
(400 MHz, dmso) δ 8.71 (s, 1H), 8.20 (d, 1H, J = 8.4 Hz), 8.01 (m, 1H), 7.91 – 7.64 (m, 6H),
7.38 - 7.28 (m, 6H), 6.85 (s, 1H), 5.51 (d, 1H, J = 7.2 Hz), 5.39 – 5.29 (m, 3H), 5.13 – 5.09
(m, 1H), 4.11 -3.04 (m, 15H), 2.77 - 1.98 (m, 8H), 0.79 (dd, 6H, J = 6.8 Hz, J = 12.8 Hz).
Example MR
O O O
O O O
Cl N
Pd2dba3, KOAc, XPOS,
N Boc dioxane, 90°C
(2S,4S)-tert-butyl 2-(9-chloro-4,5-dihydro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)(methoxymethyl)pyrrolidinecarboxylate
O H
O O O
N N
H H
O N
B N
O N Boc Pd(PPh3)4, PdCl2(dppf),
K2CO3, DME/ DMF, 85°C
(2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-
tetramethyl-1,3,2-dioxaborolanyl)-4,5-dihydro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)pyrrolidinecarboxylate
H O
N H
O O N 1. HCl, EtOH, 60°C
N N
N N N Boc 2.
(2S,4S)-tert-butyl 2-((S)((S)(methoxycarbonyl O
H N O
amino)methylbutanoyl)pyrrolidinyl)-1H-imidazol-
-yl-4,5-dihydro-1,11-dihydroisochromeno[4',3':6,7]naphtho O H
[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine COMU, DIPEA, DMF, RT
ylate
H O
N H
O O
N N
N N N
N O
methyl {(1R)[(2S,4S)(9-{2-[(2S){(2S)[(methoxy
carbonyl)amino]methylbutanoyl}pyrrolidinyl)-1H-imidazol-
-yl]-1,11-dihydroisochromeno[4',3':6,7]-4,5-dihydro-naphtho[1,2-d]
imidazolyl}(methoxymethyl)pyrrolidinyl]oxo
phenylethyl}carbamate
(2S,4S)-tert-butyl4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-dioxaboro lan
yl)-4,5-dihydro-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)pyrrolidinecarboxylate
A degassed mixture of (2S,4S)-tert-butyl 2-(9-chloro-4,5-dihydro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol yl)(methoxymethyl)pyrrolidine-
1-carboxylate (322 mg, 0.61 mmol), bis(pinacolato) diboron (235 mg, 0.92 mmol), potassium
acetate (182 mg, 1.9 mmol), tris(dibenzylideneacetone)palladium (23 mg, 0.02 mmol) and 2-
dicyclohexylphosphino-2’, 4’, 6’-tri-i-propyl-1, 1’-biphenyl (29 mg, 0.06 mmol) in 1,4-
dioxane (3.3 mL) was heated to 90 oC for 3 hours, cooled to room temperature and diluted
with ethyl acetate. The organics were washed with water and brine, dried (Na2SO4), and
concentrated. The crude residue was purified by flash chromatography to yield (2S,4S)-tertbutyl
4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-4,5-dihydro-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinecarboxylate
(267 mg, 70%).
(2S,4S)-tert-butyl(9-(2-((S)((S)(methoxycarbonylamino)methylbutano
yl)pyrrolidinyl)-1H-imidazolyl-4,5-dihydro-1,11-dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate
To a solution of (2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-4,5-dihydro-1,11-dihydroisochrome no[4',3':6,7]naphtho[1,2-
d]imidazolyl)pyrrolidinecarboxylate (267 mg, 0.52 mmol), methyl (S)((S)(5-
bromo-1H-imidazolyl)pyrrolidinyl)methyloxobutanylcarbamate (195 mg, 0.52
mmol), tetrakis (triphenylphosphine) palladium(0) (25 mg, 0.02 mmol) and dichloro[1,1'-
bis(diphenylphosphino)ferrocene] palladium(II) (32 mg, 0.04 mmol) in a mixture of 1,2-
dimethoxyethane (4.3 mL) and dimethylformamide (0.75 mL) was added a on of
potassium carbonate (2M in water, 0.65 mL, 1.3 mmol). The resulting mixture was degassed
and then heated to 85 °C under argon for 18 hours. After cooling to room ature, the
reaction was diluted with ethyl acetate. The organics were washed with water and brine,
dried 4), and trated. The crude residue was ed by flash chromatography
to yield (2S,4S)-tert-butyl 2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl-4,5-dihydro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxy late (75 mg, 22%).
methyl{(1R)[(2S,4S)(9-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl)-1H-imidazolyl]-1,11-dihydroisochromeno [4',3':6,7]-
4,5-dihydro-naphtho[1,2-d]imidazolyl}-(methoxymethyl)pyrrolidinyl]oxo
phenylethyl}carbamate
A solution of (2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxy carbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl-4,5-dihydro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl) pyrrolidine-
1-carboxylate (75 mg, 0.09 mmol), l (2 mL) and concentrated HCl (0.6 mL) was
heated to 60 °C for 1 hour. The reaction was concentrated and the crude material dissolved in
DCM (6 mL). This solution was concentrated and to this material was added a solution of
(R)(methoxycarbonylamino)phenylacetic acid (26 mg, 0.13 mmol) and COMU (47 mg,
0.11 mmol) in DMF (2 mL). To the ing solution was added diisopropylethylamine (50
L, 0.29 mmol). After stirring for 2 hours at room temperature, the reaction was diluted with
ethyl e, washed with water and brine, dried (Na2SO4), concentrated and purified by
preparative reverse phase HPLC (Gemini, 15 to 44% O + 0.1% TFA). The product
fractions were lyophilized to give methyl {(1R)[(2S,4S)(9-{2-[(2S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-1H-imidazolyl]-1,11-
dihydroisochromeno[4',3':6,7]-4,5-dihydro-naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate (15 mg, 18%).
MS (ESI) m/z 872 [M + H]+.
1H NMR (400 MHz, dmso) δ 7.95 – 7.63 (m, 6H), 7.35 - 7.25 (m, 7H), 6.97 (s, 1H),
.42 (d, 1H, J = 6.8 Hz), 5.18 (s, 2H), 5.09 (s, 2H), 4.28 -2.63 (m, 19H), 2.47 - 1.80 (m, 8H),
0.77 (dd, 6H, J = 4.8 Hz, J = 12.4 Hz).
Example MS
(2S,4S)-tert-butyl(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-benzo[d]imidazolyl)- 1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)
pyrrolidinecarboxylate
To a solution of (2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)- 1,11-dihydroisochromeno [4',3':6,7] naphtho[1,2-d]imidazol
rolidinecarboxylate (400 mg, 0.85 mmol), methyl (S)((S)(6-bromo-1H-
benzo[d]imidazolyl)pyrrolidinyl)methyloxobutanylcarbamate (360 mg, 0.85
mmol), tetrakis(triphenylphosphine) palladium(0) (38 mg, 0.03 mmol) and dichloro[1,1'-
bis(diphenylphosphino) ferrocene]palladium(II) (48 mg, 0.07 mmol) in a mixture of 1,2-
dimethoxyethane (8.0 mL) and dimethylformamide (1.4 mL) was added a solution of
potassium carbonate (2M in water, 0.98 mL, 1.96 mmol). The resulting mixture was
ed and then heated to 85 °C under argon for 18 hours. After cooling to room
temperature, the reaction was diluted with ethyl acetate. The organics were washed with
water and brine, dried (Na2SO4), and trated. The crude residue was purified by flash
chromatography to (2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-benzo[d]imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxylate (156 mg, 29%).
methyl{(2S)[[(2S,4S){9-[2-((2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl)-1H-benzo[d]imidazoly]-1,11-dihydroiso
chromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}(methoxymethyl)pyrrolidinyl]
phenylethyl}carbamate
A solution of (2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-benzo[d] imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxylate (156 mg, 0.18 mmol), ethanol (3 mL) and concentrated HCl (1 mL) was heated
to 60 °C for 1 hour. The reaction was concentrated and the crude material ved in DCM
(6 mL). This solution was concentrated and to (90 mg, 0.12 mmol) of this al was
added a solution of (R)(methoxycarbonylamino)phenylacetic acid (34 mg, 0.16 mmol)
and COMU (61 mg, 014 mmol) in DMF (2 mL). To the resulting solution was added
diisopropylethylamine (60 L, 0.37 mmol). After stirring for 2 hours at room temperature,
the reaction was diluted with ethyl acetate, washed with water and brine, dried (Na2SO4),
concentrated and purified by preparative reverse phase HPLC (Gemini, 15 to 49% O
+ 0.1% TFA). The product fractions were lyophilized to give methyl {(2S)[[(2S,4S){9-
[2-((2S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-1H-
benzo[d]imidazoly]-1,11-dihydroisochrome 3':6,7]naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate (62 mg, 56%). MS (ESI)
m/z 920 [M + H]+.
1H NMR (400 MHz, dmso) δ 8.73 (s, 1H), 8.17 (d, 2H, J = 8.4 Hz), 7.94 (d, 3H, J =
8.8 Hz), 7.84 – 7.67 (m, 6H), 7.37 - 7.29 (m, 6H), 5.48 (d, 1H, J = 7.6 Hz), 5.35 – 5.20 (m,
5H), 4.14 -3.12 (m, 15H), 2.52 - 1.92 (m, 8H), 0.80 (dd, 6H, J = 6.8 Hz, J = 6.4 Hz).
Example MT
methyl{(2S)[(2S,4S){9-[2-((2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl)-1H-benzo[d]imidazoly]-1,11-dihydroiso
chromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}(methoxymethyl)pyrrolidinyl]
methyloxobutanyl}carbamate
A solution of (2S,4S)-tert-butyl(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-benzo [d]imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxylate (156 mg, 0.18 mmol), ethanol (3 mL) and concentrated HCl (1 mL) was heated
to 60 °C for 1 hour. The reaction was concentrated and the crude material dissolved in DCM
(6 mL). This solution was trated and to 68 mg (0.09 mmol) of this material was added
a solution of (S)(methoxycarbonylamino)methylbutanoic acid (21 mg, 0.12 mmol) and
HATU (41 mg, 0.1 mmol) in DMF (1 mL). To the ing solution was added
diisopropylethylamine (50 L, 0.28 mmol). After stirring for 2 hours at room temperature,
the reaction was diluted with ethyl e, washed with water and brine, dried (Na2SO4),
concentrated and purified by preparative reverse phase HPLC (Gemini, 15 to 44% O
+ 0.1% TFA). The product fractions were lyophilized to give methyl {(2S)[(2S,4S){9-
[2-((2S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-1H-
benzo[d]imidazoly]-1,11-dihydroisochrome no[4',3':6,7]naphtho[1,2-d]imidazolyl}
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate (32 mg, 40%). MS
(ESI) m/z 886 [M + H]+.
1H NMR (400 MHz, dmso) δ 8.71 (s, 1H), 8.15 (d, 1H, J = 8 Hz), 7.95 – 7.64 (m,
8H), 7.28 (dd, 2H, J = 8.8 Hz, J = 14.4 Hz), 5.31 (s, 2H), 5.23 – 5.19 (m, 2H), 4.09 – 3.85 (m,
5H), 3.58 -3.28 (m, 14H), 2.47 – 1.89 (m, 9H), 0.83 – 0.72 (m, 12H).
Example MU
Boc N
O N Br
H H
O N O
B N
O N
N O Pd(PPh3)4, PdCl2(dppf),
H K2CO3, DME/ DMF, 85°C
(2S)-methyl {[(9-(4,4,5,5-tetramethyl-1,3,2-
orolanyl)-1,11-dihydroisochromeno[4',3':6,7]
naphtho[1,2-d]imidazolyl)pyrrolidin-1yl]methyl
oxobutanyl}carbamate
N N
Boc N 1. HCl, EtOH, 60°C
N N N
H O
N O
H O
O O
H N O
tert-butyl )[5-(2-{(2S,4S)[N-(methoxycarbonyl)- O H
L-valyl]-pyrrolidinyl}-1,11-dihydroisochromeno COMU, DIPEA, DMF, RT
[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
H O
N H
O O
N N
N N N
N O
O O
methyl {(1R)[(2S,4S)(5-{2-[(2S){(2S)[(methoxycarbonyl)
amino]methylbutanoyl}-pyrrolidinyl]-1,11-dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)-
4-(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]-pyrrolidinyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
To a on of (2S)-methyl {[(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-
1,11-dihydroisochromeno [4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinyl]methyl
oxobutanyl} carbamate (460 mg, 0.74 mmol), (2S,4S)-tert-butyl 2-(5-bromo-1H-imidazol-
2-yl)(methoxymethyl)pyrrolidinecarboxylate (250 mg, 0.61 mmol), tetrakis
(triphenylphosphine) palladium(0) (35 mg, 0.03 mmol) and dichloro[1,1'-bis
nylphosphino) ferrocene]palladium(II) (45 mg, 0.06 mmol) in a mixture of 1,2-
oxyethane (9.0 mL) and dimethylformamide (1.5 mL) was added a solution of
potassium carbonate (2M in water, 0.92 mL, 1.84 mmol). The resulting mixture was
degassed and then heated to 85 °C under argon for 18 hours. After cooling to room
temperature, the reaction was diluted with ethyl e. The organics were washed with
water and brine, dried (Na2SO4), and concentrated. The crude residue was purified by flash
chromatography to tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]-
pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7] naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (123 mg)
methyl{(1R)[(2S,4S)(5-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}-pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]
imidazolyl}-1H-imidazolyl)(methoxymethyl)pyrrolidinyl]oxo
phenylethyl}carbamate
A solution of tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxy carbonyl)-L-valyl]-
pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d] imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidine-carboxylate (122 mg, 0.16 mmol), ethanol (3
mL) and concentrated HCl (1 mL) was heated to 60 °C for 1 hour. The reaction was
concentrated and the crude material dissolved in DCM (3 mL). This solution was
concentrated and to this al was added a on of (R)(methoxycarbonylamino)
phenylacetic acid (43 mg, 0.2 mmol) and COMU (77 mg, 018 mmol) in DMF (3 mL). To the
resulting solution was added diisopropylethylamine (80 L, 0.37 mmol). After stirring for 2
hours at room temperature, the reaction was diluted with ethyl acetate, washed with water and
brine, dried (Na2SO4), trated and purified by preparative reverse phase HPLC
(Gemini, 15 to 44% ACN/H2O + 0.1% TFA). The t fractions were lyophilized to give
methyl {(1R)[(2S,4S)(5-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}-pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)(methoxymethyl)pyrrolidinyl]oxo
phenylethyl}carbamate (60 mg, 44%). MS (ESI) m/z 870 [M + H]+.
1H NMR (400 MHz, dmso) δ 8.71 (s, 1H), 8.22 (d, 1H, J = 8 Hz), 8.09 (m, 1H), 7.88
– 7.63 (m, 6H), 7.36 - 7.29 (m, 6H), 5.41 (d, 1H, J = 8.4 Hz), 5.30 – 5.24 (m, 2H), 5.14 –
.10 (m, 1H), 4.13 -3.09 (m, 15H), 2.47 - 1.80 (m, 8H), 0.80 (dd, 6H, J = 6.4 Hz, J = 23 Hz).
Example MV
O N
O N
H N
O N N Br
B N
O N Boc O
Pd(PPh3)4, PdCl2(dppf),
(1R,3S,5R)-tert-butyl (9-(4,4,5,5-tetramethyl- K2CO3, Dioxane/ DMSO,
1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno 95°C
[4',3':6,7]naphtho[1,2-d]imidazolyl)azabicyclo
[3.1.0]hexanecarboxylate
H O
O O H
N N
N 1. HCl, EtOH, 60°C
N N N Boc
H 2.
O O
(1R,3S,5R)-tert-butyl 3-(9-(2-((S)((S)(methoxy O
H N O
carbonylamino)methylbutanoyl)methoxymethyl
O H
pyrrolidinyl)-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol COMU, DIPEA, DMF, RT
yl)azabicyclo[3.1.0]hexanecarboxylate
H O
O O H
N N
N N N
N O
O O
methyl {(1R)[(1R,3S,5R)(9-{2-[(2S,5S){(2S)[(methoxy
carbonyl)amino]methylbutanoyl}methoxymethylpyrrolidinyl]-
dazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]
imidazolyl)azabicyclo[3.1.0]hexyl]oxophenylethyl}carbamate
(1R,3S,5R)-tert-butyl(9-(2-((S)((S)(methoxycarbonylamino)methylbutanoyl)-
4-methoxymethylpyrrolidinyl)-1H-imidazolyl)- 1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)azabicyclo[3.1.0] hexane-
2-carboxylate
To a solution of (1R,3S,5R)-tert-butyl (9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)- 1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)azabicyclo
[3.1.0]hexanecarboxylate (213 mg, 0.37 mmol), methyl (S)((2S,4S)(5-bromo-1H-
imidazolyl)(methoxymethyl)pyrrolidinyl)methyloxobutanylcarbamate (142
mg, 0.31 mmol), tetrakis (triphenylphosphine) palladium(0) (35 mg, 0.03 mmol) and
dichloro[1,1'-bis nylphosphino) ene]palladium(II) (22 mg, 0.03 mmol) in a
mixture of 1,4-dioxane (3.0 mL) and dimethylsulfoxide (3.0 mL) was added a solution of
potassium carbonate (2M in water, 0.46 mL, 0.9 mmol). The resulting mixture was degassed
and then heated to 95 °C under argon for 7 hours. After cooling to room temperature, the
reaction was diluted with ethyl acetate. The organics were washed with water and brine,
dried (Na2SO4), and concentrated. The crude residue was purified by flash chromatography
to (1R,3S,5R)-tert-butyl 3-(9-(2-((S)((S)(methoxycarbonyl amino)methylbutanoyl)-
4-methoxymethylpyrrolidinyl)-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)azabicyclo[3.1.0]
carboxylate (101 mg, 42%).
methyl{(1R)[(1R,3S,5R)(9-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methoxymethylpyrrolidinyl]-1H-imidazolyl}-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-azabicyclo[3.1.0]hexyl]
oxophenylethyl}carbamate
A solution (1R,3S,5R)-tert-butyl 3-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)methoxymethylpyrrolidinyl)-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)aza o[3.1.0]hexane
carboxylate (101 mg, 0.16 mmol), ethanol (3 mL) and concentrated HCl (1 mL) was heated
to 60 °C for 1 hour. The reaction was concentrated and the crude material dissolved in DCM
(3 mL). This solution was concentrated and to this material was added a solution of (R)
(methoxycarbonylamino)phenylacetic acid (35 mg, 0.17 mmol) and COMU (63 mg, 015
mmol) in DMF (3 mL). To the resulting solution was added diisopropylethylamine (70 L,
0.38 mmol). After stirring for 2 hours at room ature, the on was diluted with
ethyl acetate, washed with water and brine, dried (Na2SO4), concentrated and purified by
preparative reverse phase HPLC (Gemini, 15 to 44% ACN/H2O + 0.1% TFA). The product
fractions were lyophilized to give methyl {(1R)[(1R,3S,5R)(9-{2-[(2S,5S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methoxymethylpyrrolidinyl]-1H-
imidazol-5 yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)azabicyclo
[3.1.0]hexyl]oxophenylethyl}carbamate (71 mg, 63%).
MS (ESI) m/z 882 [M + H]+.
1H NMR (400 MHz, dmso) δ 8.66 (s, 1H), 8.17 (d, 1H, J = 8.8 Hz), 8.04 (s, 1H), 7.87
– 7.59 (m, 6H), 7.39 - 7.22 (m, 6H), 5.72 (d, 1H, J = 7.6 Hz), 5.68 (s, 1H), 5.25 (s, 1H), 5 .13
– 5.01 (m, 2H), 4.12 -4.00 (m, 2H), 3.81 – 3.00 (m, 13H), 2.60 (m, 1H), 2.43 – 2.37 (m, 3H),
1.92-1.82 (m, 3H), 0.83 – 0.58 (m, 7H), 0.59 (s, 1H), 0.00 (s, 1H).
Example MW
This compound was synthesized using the same conditions as example OO
substituting with the respective (1R,3S,5R)((S)(methoxycarbonylamino)
butanoyl)azabicyclo[3.1.0]hexanecarboxylic acid and (2S,4S)(tertbutoxycarbonyl
)((difluoromethoxy)methyl)pyrrolidinecarboxylic acid as appropriate.
MS (ESI) m/z 918 [M + H]+.
e MX
H O
N H
O O
N N
N N N
O O
N O
methyl {(1R)[(2S,4S)(9-{2-[(1R,3S,5R){(2S,3S)-
3-methoxy[(methoxycarbonyl)amino]butanoyl}azabicyclo
[3.1.0]hexyl]-1H-imidazolyl}-1,11-dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl)(difluoromethoxy)
methylpyrrolidinyl]oxophenylethyl}carbamate
This compound was synthesized using the same conditions as example OO
substituting with the respective (1R,3S,5R)((2S,3S)methoxy-2
(methoxycarbonylamino) butanoyl)azabicyclo[3.1.0]hexanecarboxylic acid and
(2S,3R)methoxy(methoxycarbonylamino)butanoic acid as appropriate.
MS (ESI) m/z 898 [M + H]+.
Example MY
O NH H
bis(pinacolato)diboron O N
O B N
X-Phos, Pd2dba3, KOAc N + O N Boc
e N
100 °C N Br
H (2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-tetramethylmethyl
((S)((S)(5-bromo-1H- 1,3,2-dioxaborolanyl)- 1,11-dihydroisochromeno
imidazolyl)pyrrolidinyl) [4',3':6,7] naphtho[1,2-d]imidazol yl)pyrrolidine
methyloxobutanyl)carbamate carboxylate
O NH
Pd(PPh3)4,
O O
Pd(dppf)2Cl2, K2CO3 1. HCl
N H
N N 2. COMU, DIPEA, DMF
DME N N Boc
85 °C H
(2S,4S)-tert-butyl 2-(9-(2-((S)((S) OH
(methoxycarbonylamino)methylbutanoyl)pyrrolidin- O N
2-yl)-1H-imidazolyl)-5H-naphtho[c,g]chromeno[8,9- O
d]imidazolyl)methylpyrrolidinecarboxylate (R)
((methoxycarbonyl)ami
O no)phenylacetic acid
O NH
O O
N H
N N
N N
H O
HN O
methyl {2-[2-{9-[2-(1-{2-[(methoxycarbonyl)amino] O
butanoyl}pyrrolidinyl)-1H-imidazolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
methylpyrrolidinyl]oxophenylethyl}carbamate
(2S,4S)tert-butyl 2-(3-chlorooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl) 4-methylpyrrolidine-1,2-dicarboxylate
To a solution of 9-bromochloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-
one (1.32 g, 3.63 mmol) in MeCN (40 mL) was added (2S,4S)(tert-butoxycarbonyl)
methylpyrrolidinecarboxylic acid (1.0 g, 4.36 mmol) and DIPEA (0.7 mL, 3.99 mmol).
After stirring for 18 h, the solution was diluted with EtOAc and washed successively with
ted aqueous NaHCO3 and brine. The organics were dried over MgSO4, ed and
concentrated under reduced pressure. The crude residue was purified by silica column
chromatography (10% to 40% EtOAc/hexanes) to afford (2S,4S)tert-butyl 2-(3-chloro
oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl) 4-methylpyrrolidine-1,2-
dicarboxylate (1.31 g, 70%).
(2S,4S)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-naphtho[c,g]chromeno[8,9-d]imidazol
yl)methylpyrrolidinecarboxylate
(2S,4S)tert-butyl 2-(3-chlorooxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl) 4-methylpyrrolidine-1,2-dicarboxylate (1.31 g, 2.56 mmol) was
added xylenes (25 mL) and ammonium acetate (3.95 g, 51.2 mmol) and the solution was
heated to 136 °C and stirred overnight. The ing g, the solution was cooled to rt
and was diluted with EtOAc and washed successively with water, saturated aqueous NaHCO3
and brine. The organics were dried over MgSO4, filtered and concentrated under reduced
pressure. The crude e was purified by silica column chromatography (60% to 100 %
EtOAc/hexanes) to afford (2S,4S)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)methylpyrrolidinecarboxylate (711 mg,
56%).
(2S,4S)-tert-butyl 2-(9-chloro-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)
methylpyrrolidinecarboxylate
To a on of (2S,4S)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)(methyl)pyrrolidinecarboxylate (935 mg,
1.9 mmol) in CH2Cl2 (20 mL) was added MnO2 (8.25 g, 95 mmol). The reaction mixture was
stirred for 3 h, and then filtered over celite. The filter cake was washed with copious CH2Cl2
and MeOH, and the filtrate was concentrated under reduced pressure. The crude residue was
purified by silica column chromatography (0% to 10 % MeOH/EtOAc) to afford (2S,4S)-tertbutyl
hloro-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)methylpyrrolidine
carboxylate (692 mg, 74%).
(2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
oisochromeno [4',3':6,7] naphtho[1,2-d]imidazol yl)pyrrolidinecarboxylate
(2S,4S)-tert-butyl 2-(9-chloro-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)
methylpyrrolidinecarboxylate (692 mg, 1.41 mmol) in dioxane (15 mL) was added
nacolato)diboron (1.07 g, 4.23 mmol), KOAc (415 mg, 4.23 mmol), X-Phos (52 mg,
0.11 mmol), and Pd2dba3 (26 mg, 0.03 mmol). The solution was degassed with N2 for 10
min, then heated to 100 °C for 16 h. The solution was cooled to rt, diluted with EtOAc,
washed with saturated aqueous NaHCO3, brine, dried with MgSO4, and concentrated.
Purified by silica gel chromatography (0% to 30 % MeOH/EtOAc) to afford (2S,4S)-tert-
butyl 4-methyl(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno
[4',3':6,7] naphtho[1,2-d]imidazol pyrrolidinecarboxylate (821 mg, quant).
(2S,4S)-tert-butyl 2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-5H-naphtho[c,g]chromeno[8,9-
d]imidazolyl)-4(methyl)pyrrolidinecarboxylate
To a solution of (2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno [4',3':6,7] naphtho[1,2-d]imidazol
yl)pyrrolidinecarboxylate (821 mg, 1.41 mmol), methyl (S)((S)(5-bromo-1H-
imidazolyl)pyrrolidinyl)methyloxobutanylcarbamate (1.05 g, 2.82 mmol),
tetrakis(triphenylphosphine) palladium(0) (162 mg, 0.14 mmol) and dichloro[1,1'-
bis(diphenylphosphino)ferrocene]palladium(II) (102 mg, 0.14 mmol) in DME (15 mL) was
added a solution of potassium carbonate (2M in water, 2.32 mL, 4.65 mmol). The resulting
mixture was degassed and then heated to 85 °C for 18 hours. After cooling to room
temperature, the reaction was d with ethyl e. The organics were washed with
saturated sodium bicarbonate and brine, dried over MgSO4 and concentrated. The crude
residue was ed by flash chromatography to yield (2S,4S)-tert-butyl 2-(9-(2-((S)((S)-
2-(methoxycarbonylamino)methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)-4methylpyrrolidinecarboxylate (386 mg,
37%).
Methyl {2-[2-{9-[2-(1-{2-[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-
1H-imidazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
(methyl)pyrrolidinyl]oxophenylethyl}carbamate
A solution of (2S,4S)-tert-butyl 2-(9-(2-((S)((S)(methoxycarbonylamino)
methylbutanoyl)pyrrolidinyl)-1H-imidazolyl)-5H-naphtho[c,g]chromeno[8,9-
d]imidazolyl)-4methylpyrrolidinecarboxylate (386 mg, 0.52 mmol), CH2Cl2 (8 mL),
MeOH (2 mL) and HCl (4M in e, 2 mL) and was stirred overnight. The reaction was
concentrated and the crude material dissolved in DMF (8 mL). This solution was
concentrated and to this material was added a on of (R)(methoxycarbonylamino)
phenylacetic acid (108 mg, 0.52 mmol) and COMU (248 mg, 0.52 mmol). To the resulting
solution was added diisopropylethylamine (0.45 mL, 2.6 mmol). After stirring for 2 hours at
room temperature, the reaction was diluted with 10% MeOH/EtOAc, washed with saturated
NaHCO3, water and brine, dried (Na2SO4), concentrated and purified by HPLC to give
methyl {2-[2-{9-[2-(1-{2-[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl)-1H-
imidazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
pyrrolidinyl]oxophenylethyl}carbamate (27 mg, 6%). LCMS-ESI+:
calculated for C47H50N8O7: 838.38; observed [M+1]+: 840.12
Example NB
(2S,4S)-tert-butyl yl(9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno
[4',3':6,7] naphtho[1,2-d]imidazol yl)pyrrolidine
carboxylate
Methyl [(2S)methyl{(2S,4S)methyl[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}
oxobutanyl]carbamate
(2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno [4',3':6,7] naphtho[1,2-d]imidazol pyrrolidinecarboxylate (950
mg, 1.63 mmol) was dissolved in DCM (12 mL), MeOH (3 mL) and HCl (4 M in dioxane, 3
mL) was added. The reaction mixture was stirred for 4 h and then concentrated under reduced
pressure. The crude residue was treated with (S)(methoxycarbonylamino)
methylbutanoic acid (285 mg, 1.63 mmol), HATU (620 mg, 1.63 mmol) and DMF (15 mL),
then DIPEA (1.42 mL, 8.15 mmol) was added dropwise. After 1 h, the mixture was diluted
with EtOAc and washed successively with saturated aqueous NaHCO3 and brine. The
cs were dried over MgSO4, filtered and concentrated under reduced pressure. The
crude residue was purified by silica column chromatography (0% to 30% MeOH/EtOAc) to
afford methyl [(2S)methyl{(2S,4S)methyl[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}oxobutanyl]carbamate (596 mg, 57%).
Tert-butyl (2S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
rolidinecarboxylate
Methyl [(2S)methyl{(2S,4S)methyl[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}oxobutanyl]carbamate (298 mg, 0.47 mmol), (S)-tert-butyl 2-(5-
bromo-1H-imidazolyl)pyrrolidinecarboxylate (443 mg, 1.4 mmol), Pd(PPh3)4 (54 mg,
0.05 mmol), PdCl2(dppf)2 (36 mg, 0.05 mmol), and K2CO3 (2M in H2O, 0.78 mL, 1.55
mmol) were combined in DME (5 mL). The mixture was ed with bubbling N2 for 10
min then heated to 85 ˚C for 16 h. After cooling, the reaction mixture was diluted with
EtOAc, and washed successively with ted aqueous NaHCO3 and brine. The organics
were dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue
was ed by silica column chromatography (0% to 30% MeOH/EtOAc) to afford tert-
butyl -[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl]pyrrolidinecarboxylate (84 mg, 24%).
Methyl {(1R)[(2S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
butanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinyl]oxophenylethyl}carbamate
Tert-butyl (2S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]pyrrolidinecarboxylate (84 mg, 0.11 mmol) was dissolved in DCM (2.5
mL), MeOH (0.5 mL) and HCl (4 M in dioxane, 0.5 mL) was added. The reaction e
was stirred for 18 h and then concentrated under reduced pressure. The crude residue was
treated with (R)(methoxycarbonylamino)phenylacetic acid (23 mg, 0.11 mmol), COMU
(53 mg, 0.11 mmol) and DMF (3 mL), then DIPEA (0.10 mL, 0.56 mmol) was added
dropwise. After 30 min, the mixture was diluted with 10% MeOH/EtOAc and washed
successively with saturated aqueous NaHCO3 and brine. The organics were dried over
MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified by
HPLC to afford methyl {(1R)[(2S)(5-{2-[(2S,4S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
oxophenylethyl}carbamate (41 mg, 45%). LCMS-ESI+: calculated for
C47H50N8O7: 838.38; ed [M+1]+: 839.39
e NC
Methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate
Tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]methylpyrrolidinecarboxylate (164 mg, 0.23 mmol) was dissolved in
DCM (2.57 mL), MeOH (0.7 mL) and HCl (4 M in dioxane, 0.7 mL) was added. The
reaction mixture was d for 16 h and then concentrated under reduced pressure. The
crude residue was treated with (S)(methoxycarbonylamino)methylbutanoic acid (30
mg, 0.17 mmol), HATU (65 mg, 0.17 mmol) and DMF (3 mL), then DIPEA (0.15 mL, 0.85
mmol) was added dropwise. After 45 min, the mixture was diluted with 10% MeOH/EtOAc
and washed successively with saturated aqueous NaHCO3 and brine. The organics were dried
over MgSO4, filtered and concentrated under reduced pressure. The crude e was
purified by HPLC to afford methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate (23 mg, 16%).
LCMS-ESI+: calculated for C45H54N8O7: 818.41; observed [M+1]+: 820.70.
Example ND
Boc N O H 3)4,
N O
I + N
N Pd(dppf)2Cl2, K2CO3
N B
H O N Boc DME
85 °C
(2S,4S)-tert-butyl 2-(5- (2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-
iodo-1H-imidazolyl) tetramethyl-1,3,2-dioxaborolanyl)-1,11-
methylpyrrolidine dihydroisochromeno [4',3':6,7] naphtho[1,2-
carboxylate d]imidazol yl)pyrrolidinecarboxylate
1. HCl
Boc N H 2. HATU, DIPEA, DMF
N N
N N Boc
H OH
O N
utyl (2S,4S)(5-{2-[(2S,4S)(tert- H
butoxycarbonyl)methylpyrrolidinyl]-1,11- (S)(methoxycarbonylamino)-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol 3-methylbutanoic acid
yl}-1H-imidazolyl)methylpyrrolidinecarboxylate
O NH
O O
N H
N N
N N
H O
HN O
methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2S) O
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)-
4-methylpyrrolidinyl]methyloxobutanyl}carbamate
Tert-butyl (2S,4S)(5-{2-[(2S,4S)(tert-butoxycarbonyl)methylpyrrolidinyl]-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinecarboxylate
(2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno [4',3':6,7] naphtho[1,2-d]imidazol yl)pyrrolidinecarboxylate (293
mg, 0.78 mmol), )-tert-butyl 2-(5-iodo-1H-imidazolyl)methylpyrrolidine
carboxylate (300 mg, 0.52 mmol), Pd(PPh3)4 (60 mg, 0.052 mmol), PdCl2(dppf)2 (38 mg,
0.052 mmol), and K2CO3 (2M in H2O, 0.86 mL, 1.72 mmol) were combined in DME (6 mL).
The mixture was degassed with ng N2 for 10 min then heated to 85 ˚C for 16 h. After
cooling, the reaction mixture was diluted with EtOAc, and washed successively with
saturated s NaHCO3 and brine. The organics were dried over MgSO4, filtered and
concentrated under reduced pressure. The crude residue was purified by silica column
chromatography (100% EtOAc) to afford tert-butyl (2S,4S)(5-{2-[(2S,4S)(tertbutoxycarbonyl
)methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)methylpyrrolidinecarboxylate (183 mg, 50%).
Methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate
Tert-butyl (2S,4S)(5-{2-[(2S,4S)(tert-butoxycarbonyl)methylpyrrolidin
yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinecarboxylate (183 mg, 0.26 mmol) was dissolved in DCM (4 mL), MeOH
(1 mL) and HCl (4 M in dioxane, 1 mL) was added. The on mixture was stirred for 2 h
and then trated under reduced pressure. The crude residue was treated with (S)
(methoxycarbonylamino)methylbutanoic acid (91 mg, 0.52 mmol), HATU (198 mg, 0.52
mmol) and DMF (5 mL), then DIPEA (0.45 mL, 2.6 mmol) was added se. After 1 h,
the mixture was diluted with 10% MeOH/EtOAc and washed successively with saturated
aqueous NaHCO3 and brine. The cs were dried over MgSO4, filtered and concentrated
under reduced pressure. The crude residue was purified by HPLC to afford methyl {(2S)
[(2S,5S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}
methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-
imidazolyl)methylpyrrolidinyl]methyloxobutanyl}carbamate (6 mg, 3%).
LCMS-ESI+: calculated for C45H54N8O7: 818.41; observed [M+1]+: 819.41.
Example NF
O NH O H 3)4,
O O N K2CO3
N + B N Pd(dppf)2Cl2,
N O N Boc DMSO, Dioxane
N I 85 °C
(2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-
methyl -((2S,4S)(5-iodo-1H- tetramethyl-1,3,2-dioxaborolanyl)-1,11-
imidazolyl)methylpyrrolidinyl)- dihydroisochromeno [4',3':6,7] naphtho[1,2-
3-methyloxobutanyl)carbamate d]imidazol yl)pyrrolidinecarboxylate
1. HCl
O NH
2. COMU, DIPEA, DMF
O O
N H
N N
N N Boc O
H OH
O N
tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)- O
L-valyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11- (R)
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl] ((methoxycarbonyl)amino)
methylpyrrolidinecarboxylate phenylacetic acid
O NH
O O
N H
N N
N N
H O
HN O
methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2R)
[(methoxycarbonyl)amino]phenylacetyl}methylpyrrolidin
yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl}-1H-imidazolyl)methylpyrrolidinyl]methyl
oxobutanyl}carbamate
Tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]methylpyrrolidine
carboxylate
(2S,4S)-tert-butyl 4-methyl(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno [4',3':6,7] naphtho[1,2-d]imidazol yl)pyrrolidinecarboxylate (558
mg, 0.96 mmol), methyl (S)((2S,4S)(5-iodo-1H-imidazolyl)methylpyrrolidin
methyloxobutanylcarbamate (501 mg, 1.15 mmol), Pd(PPh3)4 (111 mg, 0.096
mmol), PdCl2(dppf)2 (70 mg, 0.096 mmol), and K2CO3 (2M in H2O, 1.6 mL, 3.17 mmoL)
were combined in DMSO (6 mL) and dioxane (6 mL). The mixture was degassed with
bubbling N2 for 10 min then heated to 95 ˚C for 14 h. After cooling, the reaction mixture was
d with EtOAc, and washed successively with saturated aqueous NaHCO3 and brine. The
cs were dried over MgSO4, filtered and concentrated under reduced pressure. The
crude residue was purified by silica column chromatography (0 %- 30% MeOH/EtOAc) to
afford tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]methylpyrrolidinecarboxylate (257 mg, 35%).
Methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)methylpyrrolidinyl]methyloxobutan
yl}carbamate
Tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]methylpyrrolidinecarboxylate (257 mg, 0.34 mmol) was dissolved in
DCM (4 mL), MeOH (1 mL) and HCl (4 M in dioxane, 1 mL) was added. The reaction
mixture was d for 3 h and then concentrated under reduced pressure. The crude residue
was treated with (R)(methoxycarbonylamino)phenylacetic acid (71 mg, 0.34 mmol),
COMU (161 mg, 0.34 mmol) and DMF (6 mL), then DIPEA (0.3 mL, 1.67 mmol) was added
dropwise. After 15 h, the mixture was diluted with 10% MeOH/EtOAc and washed
successively with saturated aqueous NaHCO3 and brine. The organics were dried over
MgSO4, filtered and concentrated under reduced pressure. The crude residue was ed by
HPLC to afford methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2R)
[(methoxycarbonyl)amino]phenylacetyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate (152 mg, 53%). SI+:
calculated for N8O7: 852.40; observed [M+1]+: 854.26. 'H NMR (CD3OD): 8.677
(s, 1H), 7.837 (m, 5H), 7.695-7.673 (m, 2H), 7.426 (m, 5H), 5.499 (s, 1H),
5.445-5.401 (m, 1H), 5.337 (s, 1H), 5.253-5.208 (q, 1H, J= 7.2 Hz), 4.870 (m, 1H), 4.230 (d,
1H, J= 7.2 Hz), 3.781 (m, 1H), 3.671 (s, 3H), 3.607 (s, 3H), 3.425 (m, 3H), 2.750-2.689 (m,
2H), 2.683 (m, 2H), 2.384 (m, 1H), 1.894 (quint, 2H, J=12 Hz), 1.249-1.151 (m, 6H), 0.974-
0.890 (m, 6H).
Example NG
O O
O O
O Boc O
Et3N
Br MeCN O
50 °C
Boc O (2S,5S)tert-butyl 2-(2-oxo(8-
romoacetyl)-10,11-dihydro-5H- N oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromen-8(9H)-one o[c,g]chromenyl)ethyl) 5-
methylpyrrolidine-1,2-dicarboxylate
(2S,5S)(tertbutoxycarbonyl
)
methylpyrrolidine
carboxylic acid
pyridiunium O O
mide Boc O Cs2CO3
N acetone
CH2Cl2/MeOH O Br 40 °C
(2S,5S)(2-(9-bromooxo-8,9,10,11-tetrahydro- N
5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tert- O Boc
butyl 5-methylpyrrolidine-1,2-dicarboxylate (2S,5S)(tertbutoxycarbonyl
)
methylpyrrolidine
O carboxylic acid
Boc O O O
N NH4OAc
O O
N PhMe, MeOEtOH
O Boc reflux
(2S,5S)(2-(9-((2S,5S)(tert-butoxycarbonyl)
methylpyrrolidinecarbonyloxy)oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl)oxoethyl) 1-tert-butyl 5-
methylpyrrolidine-1,2-dicarboxylate
O O
Boc N H Boc N H
N MnO2 N
N N N
N N Boc CH2Cl2 N Boc
H N
tert-butyl (2S,5S)(9-{2-[(2S,5S)(tert-butoxycarbonyl)- tert-butyl (2S,5S)(5-{2-[(2S,5S)(tert-
-methylpyrrolidinyl]-1H-imidazolyl}-1,4,5,11- butoxycarbonyl)methylpyrrolidinyl]-1,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)methylpyrrolidinecarboxylate yl}-1H-imidazolyl)methylpyrrolidinecarboxylate
1. HCl O NH
O O
2. HATU, DIPEA, DMF
N H
O N N
OH N
O N O
H HN O
(S) O
(methoxycarbonylamino) methyl 1-[(2S,5S)(5-{2-[(2S,5S){(2S)
methylbutanoic acid [(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidin-
2-yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)methylpyrrolidinyl]methyl
oxobutanyl}carbamate
(2S,5S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl)ethyl) 5-methylpyrrolidine-1,2-dicarboxylate
To a solution of 3-(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-
one in MeCN (30 mL) was added (2S,5S)(tert-butoxycarbonyl)methylpyrrolidine
carboxylic acid (1.2 g, 3.23 mmol) and triethyl amine (0.48 mL, 3.55 mmol) and the solution
was heated to 50 °C. After stirring for 15 h, the solution was cooled to rt, and diluted with
EtOAc and washed successively with saturated aqueous NaHCO3 and brine. The organics
were dried over MgSO4, filtered and trated under reduced pressure. The crude residue
was ed by silica column chromatography (20% to 50% EtOAc/hexanes) to afford
(2S,5S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl)ethyl) 5-methylpyrrolidine-1,2-dicarboxylate (1.09 g, 65%).
(2S,5S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 5-methylpyrrolidine-1,2-dicarboxylate
(2S,5S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl)ethyl) ylpyrrolidine-1,2-dicarboxylate (1.29 g, 2.48 mmol)
was dissolved in a solution of DCM (17.5 mL) and MeOH (7 mL), then treated with
pyridinium tribromide (873 mg, 2.73 mmol). After stirring at RT for 1 h, the reaction mixture
was diluted with DCM and 10% HCl, and extracted with DCM. The organic phase was dried
over MgSO4, filtered and concentrated under reduced pressure and the crude material was
carried on without further purification.
(2S,5S)(2-(9-((2S,5S)(tert-butoxycarbonyl)methylpyrrolidinecarbonyloxy)
9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tert-butyl 5-
methylpyrrolidine-1,2-dicarboxylate
(2S,5S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 5-methylpyrrolidine-1,2-dicarboxylate (700 mg, 1.17 mmol) was
treated with a solution of (2S,5S)(tert-butoxycarbonyl)methylpyrrolidinecarboxylic
acid (375 mg, 1.64 mmol) in e (6 mL) and Cs2CO3 (267 mg, 0.82 mmol). The stirred
on mixture was heated to 40 ˚C for 16 h, then cooled to RT and d with CH2Cl2 and
extracted 3X. The organic phase was washed with brine, then dried over MgSO4, ed and
concentrated under reduced pressure. The crude residue was purified by silica column
chromatography (40% to 100% EtOAc/hexanes) to afford (2S,5S)(2-(9-((2S,5S)(tertbutoxycarbonyl
)methylpyrrolidinecarbonyloxy)oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl)oxoethyl) 1-tert-butyl 5-methylpyrrolidine-1,2-dicarboxylate
(464 mg, 53%).
Tert-butyl (2S,5S)(9-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidinyl]-
1H-imidazolyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)methylpyrrolidinecarboxylate
(2S,5S)(2-(9-((2S,5S)(tert-butoxycarbonyl)methylpyrrolidine
carbonyloxy)oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tertbutyl
-methylpyrrolidine-1,2-dicarboxylate (464 mg, 0.62 mmol) and NH4OAc (8.48 g,
110.0 mmol) were suspended in a solution of 10:1 PhMe/2-methoxyethanol (22 mL). The
stirred reaction mixture was heated to 110 ˚C for 20 h, then cooled to RT and diluted with
EtOAc. The organic phase was washed with water, ted aqueous NaHCO3, and brine,
then dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue
was purified by silica column chromatography (0% to 30% MeOH/EtOAc) to afford tertbutyl
(2S,5S)(9-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidinyl]-1H-
imidazolyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
methylpyrrolidinecarboxylate (393 mg, 90%).
Tert-butyl )(5-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidinyl]-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
pyrrolidinecarboxylate
Tert-butyl (2S,5S)(9-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidin
yl]-1H-imidazolyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)methylpyrrolidinecarboxylate (393 mg, 0.55 mmol) was suspended in DCM (7 mL)
and activated MnO2 (1.45 g, 16.7 mmol) was added in a single portion. The reaction mixture
was heated to 40 °C. After stirring for 2.5 h, the mixture was cooled to rt and the slurry was
filtered over . The filter cake was washed with copious CH2Cl2 and MeOH and the
filtrate was concentrated under d pressure. The crude material was taken on to the next
step without further purification to afford tert-butyl (2S,5S)(5-{2-[(2S,5S)(tertbutoxycarbonyl
)methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)methylpyrrolidinecarboxylate (328 mg, 85%).
Methyl 1-[(2S,5S)(5-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate
Tert-butyl (2S,5S)(5-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidin
yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
pyrrolidinecarboxylate (164 mg, 0.23 mmol) was dissolved in DCM (7 mL), MeOH
(1.5 mL) and HCl (4 M in dioxane, 1.5 mL) was added. The reaction mixture was stirred for
16 h and then concentrated under reduced pressure. The crude residue was treated with (S)
(methoxycarbonylamino)methylbutanoic acid (81 mg, 0.46 mmol), HATU (175 mg, 0.46
mmol) and DMF (5 mL), then DIPEA (0.4 mL, 2.34 mmol) was added dropwise. After 35
min, the mixture was diluted with 10% MeOH/EtOAc and washed successively with
saturated aqueous NaHCO3 and brine. The organics were dried over MgSO4, filtered and
concentrated under d pressure. The crude residue was purified by HPLC to afford
methyl {(2S)[(2S,5S)(5-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)methylpyrrolidinyl]methyloxobutan
yl}carbamate (132 mg, 69%). LCMS-ESI+: calculated for C45H54N8O7: 818.41; observed
[M+1]+: 820.19. 'H NMR ): 8.492 (m, 1H), 8.179-7.538 (m, 7H), 5.267-5.201 (m,
3H), 5.125-5.082 (m, 1H), 4.070 (m, 1H), 3.383-3.592 (m, 4 H), 3.225 (s, 3H), 2.466-2.249
(m, 5H), 1.992-1.892 (m, 3H), 1.568 (d, 3H, J=6.4 Hz), 1.490 (d, 3H, J=6.8 Hz), 1.266 (m,
2H), 1.020-0.806 (m, 14H).
Example NI
Boc N H
N 1. HCl
N N
N 2. HATU, DIPEA, DMF
N Boc
H OH O
tert-butyl (2S,5S)(5-{2-[(2S,5S)(tert- O
HN O
carbonyl)methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol O
yl}-1H-imidazolyl)methylpyrrolidinecarboxylate
(2S,3R)methoxy
(methoxycarbonylamin
O o)butanoic acid
O NH
O O
N H
O N N O
N N
H O
HN O
methyl R)methoxy{(2S,5S)[9-(2-{(2S,5S)[N-
(methoxycarbonyl)-O-methyl-L-threonyl]methylpyrrolidinyl}-1H-
imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
methylpyrrolidinyl}oxobutanyl]carbamate
Methyl [(2S,3R)methoxy{(2S,5S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-O-
methyl-L-threonyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]methylpyrrolidinyl}
oxobutanyl]carbamate
Tert-butyl (2S,5S)(5-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidin
yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinecarboxylate (164 mg, 0.23 mmol) was ved in DCM (7 mL), MeOH
(1.5 mL) and HCl (4 M in dioxane, 1.5 mL) was added. The on mixture was stirred for
16 h and then concentrated under reduced pressure. The crude residue was treated with
(2S,3R)methoxy(methoxycarbonylamino)butanoic acid (90 mg, 0.46 mmol), HATU
(175 mg, 0.46 mmol) and DMF (6 mL), then DIPEA (0.4 mL, 2.34 mmol) was added
dropwise. After 30 min, the e was diluted with 10% MeOH/EtOAc and washed
successively with saturated aqueous NaHCO3 and brine. The organics were dried over
MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified by
HPLC to afford methyl [(2S,3R)methoxy{(2S,5S)[9-(2-{(2S,5S)[N-
xycarbonyl)-O-methyl-L-threonyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]methylpyrrolidinyl}
oxobutanyl]carbamate (97 mg, 50%). LCMS-ESI+: calculated for C45H54N8O9: 850.40;
observed [M+1]+: 851.58. 'H NMR (CD3OD): 8.631 (s, 1H), 8.191-7.938 (m, 7 H), 6.100 (m,
1 H), 5.925 (m, 1H), 5.303 (m, 3H), 5.179 (t, 1H, J=6.8 Hz), 4.406-4.358 (m, 2H), 3.754-
3.598 (m, 8H), 3.376 (s, 3H), 3.263 (s, 3H), 2.625-2.256 (m, 6H), 2.038-1.955 (m, 2H), 1.598
(d, 3H, J=6.4 Hz), 1.530 (d, 3H, J=6.8 Hz), 1.302-1.099 (m, 6H).
Example NJ
Boc O O O Cs2CO3
O Br acetone
40 °C O
(2S,5S)(2-(9-bromooxo-8,9,10,11- HO
ydro-5H-dibenzo[c,g]chromenyl) N
oxoethyl) 1-tert-butyl 5-methylpyrrolidine-1,2- O Boc
oxylate
(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidine
carboxylic acid
Boc O O O O
N NH4OAc
O O
PhMe, MeOEtOH
O Boc reflux
(2S,5S)(2-(9-((2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinecarbonyloxy)oxo-8,9,10,11-
tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tertbutyl
-methylpyrrolidine-1,2-dicarboxylate
Boc N H
N MnO2
N N
N N Boc CH2Cl2
tert-butyl (2S,5S)(9-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
methylpyrrolidinecarboxylate
(2S,5S)(2-(9-((2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidine
carbonyloxy)oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-
tert-butyl 5-methylpyrrolidine-1,2-dicarboxylate
(2S,5S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 5-methylpyrrolidine-1,2-dicarboxylate (800 mg, 1.34 mmol) was
treated with a solution of )(tert-butoxycarbonyl)(methoxymethyl)pyrrolidine
carboxylic acid (485 mg, 1.87 mmol) in acetone (6 mL) and Cs2CO3 (306 mg, 0.94 mmol).
The stirred reaction mixture was heated to 40 ˚C for 16 h, then cooled to RT and diluted with
CH2Cl2 and extracted 3X. The organic phase was washed with brine, then dried over MgSO4,
filtered and concentrated under reduced pressure. The crude residue was ed by silica
column tography (40% to 100% EtOAc/hexanes) to afford (2S,5S)(2-(9-((2S,4S)-
1-(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarbonyloxy)oxo-8,9,10,11-
tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tert-butyl 5-methylpyrrolidine-1,2-
dicarboxylate (680 mg, 65%).
Tert-butyl (2S,5S)(9-{2-[(2S,4S)(tert-butoxycarbonyl)
xymethyl)pyrrolidinyl]-1H-imidazolyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidine
carboxylate
(2S,5S)(2-(9-((2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidine
carbonyloxy)oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tertbutyl
-methylpyrrolidine-1,2-dicarboxylate (680 mg, 0.87 mmol) and NH4OAc (10.0 g,
130.0 mmol) were suspended in a solution of 10:1 PhMe/2-methoxyethanol (22 mL). The
stirred reaction mixture was heated to 110 ˚C for 24 h, then cooled to RT and d with
EtOAc. The organic phase was washed with water, saturated aqueous NaHCO3, and brine,
then dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue
was purified by silica column chromatography (0% to 30% MeOH/EtOAc) to afford tertbutyl
(2S,5S)(9-{2-[(2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinyl]-
1H-imidazolyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
methylpyrrolidinecarboxylate (461 mg, 72%).
Tert-butyl )(5-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)methylpyrrolidinecarboxylate
utyl (2S,5S)(9-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidine
carboxylate (461 mg, 0.62 mmol) was suspended in DCM (7 mL) and activated MnO2 (1.6 g,
18.8 mmol) was added in a single portion. The reaction mixture was heated to 40 °C. After
stirring for 5.5 h, the mixture was cooled to rt and the slurry was filtered over celite. The
filter cake was washed with copious CH2Cl2 and MeOH and the filtrate was concentrated
under reduced pressure. The crude material was taken on to the next step without further
purification to afford tert-butyl (2S,5S)(5-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)methylpyrrolidinecarboxylate (414 mg, 90%).
Methyl {(2S,3S)[(2S,5S)(5-{2-[(2S,4S){(2S,3S)[(methoxycarbonyl)amino]
methylpentanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxopentanyl}carbamate
Tert-butyl (2S,5S)(5-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)methylpyrrolidinecarboxylate (207 mg, 0.28 mmol) was
ved in DCM (4 mL), MeOH (1 mL) and HCl (4 M in dioxane, 1 mL) was added. The
reaction mixture was stirred for 1.5 h and then concentrated under reduced pressure. The
crude residue was treated with (2S,3S)(methoxycarbonylamino)methylpentanoic acid
(106 mg, 0.56 mmol), HATU (214 mg, 0.56 mmol) and DMF (5 mL), then DIPEA (0.49 mL,
2.8 mmol) was added dropwise. After 30 min, the mixture was diluted with 10%
MeOH/EtOAc and washed successively with saturated aqueous NaHCO3 and brine. The
cs were dried over MgSO4, filtered and concentrated under reduced pressure. The
crude residue was purified by HPLC to afford methyl S)[(2S,5S)(5-{2-[(2S,4S)-
1-{(2S,3S)[(methoxycarbonyl)amino]methylpentanoyl}(methoxymethyl)pyrrolidin-
2-yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxopentanyl}carbamate (132 mg, 69%). LCMS-ESI+:
calculated for C45H54N8O7: 876.45; observed [M+1]+: 879.02
Example NK
(2S,4S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl)ethyl) 4-methylpyrrolidine-1,2-dicarboxylate
To a on of 3-(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-
one (647 mg, 1.74 mmol) in MeCN (20 mL) was added ((2S,4S)(tert-butoxycarbonyl)
methylpyrrolidinecarboxylic acid (559 mg, 2.44 mmol) and DIPEA (0.36 mL, 2.09 mmol)
and the solution was heated to 60 °C. After stirring for 3 h, the solution was cooled to rt, and
diluted with EtOAc and washed successively with saturated s NaHCO3 and brine. The
organics were dried over MgSO4, filtered and concentrated under reduced pressure. The
crude residue was purified by silica column chromatography (20% to 50% EtOAc/hexanes)
to afford (2S,4S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl)ethyl) ylpyrrolidine-1,2-dicarboxylate (621 mg, 69%).
(2S,4S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 4-methylpyrrolidine-1,2-dicarboxylate
(2S,4S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl)ethyl) 4-methylpyrrolidine-1,2-dicarboxylate (621 mg, 1.19 mmol)
was dissolved in a solution of DCM (10 mL) and MeOH (4 mL), then treated with
pyridinium mide (421 mg, 1.3 mmol). After stirring at RT for 1.5 h, the on
mixture was diluted with DCM and 10% HCl, and extracted with DCM. The organic phase
was dried over MgSO4, filtered and concentrated under reduced pressure and the crude
material was carried on without further purification.
(2S,4S)(2-(9-((2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidine
carbonyloxy)oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-
tert-butyl 4-methylpyrrolidine-1,2-dicarboxylate
(2S,4S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 4-methylpyrrolidine-1,2-dicarboxylate (709 mg, 1.18 mmol) was
treated with a solution of (2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidine
carboxylic acid (614 mg, 2.36 mmol) in Me-THF (12 mL) and Cs2CO3 (384 mg, 1.18 mmol).
The stirred reaction e was heated to 50 ˚C for 16 h, then cooled to RT and diluted with
CH2Cl2 and extracted 3X. The organic phase was washed with brine, then dried over MgSO4,
ed and concentrated under reduced pressure. The crude residue was purified by silica
column chromatography (40% to 100% EtOAc/hexanes) to afford (2S,4S)(2-(9-((2S,4S)-
1-(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarbonyloxy)oxo-8,9,10,11-
tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tert-butyl 4-methylpyrrolidine-1,2-
oxylate (651 mg, 71%).
Tert-butyl (2S,4S)(9-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidine
carboxylate
(2S,4S)(2-(9-((2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidine
yloxy)oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tertbutyl
4-methylpyrrolidine-1,2-dicarboxylate (651 mg, 0.84 mmol) and NH4OAc (10.0 g,
129.7 mmol) were suspended in a solution of 10:1 PhMe/2-methoxyethanol (22 mL). The
stirred reaction mixture was heated to 110 ˚C for 20 h, then cooled to RT and d with
EtOAc. The organic phase was washed with water, saturated aqueous NaHCO3, and brine,
then dried over MgSO4, filtered and concentrated under reduced re. The crude residue
was purified by silica column chromatography (0% to 30% MeOH/EtOAc) to afford tertbutyl
(2S,4S)(9-{2-[(2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinyl]-
1H-imidazolyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
pyrrolidinecarboxylate (382 mg, 62%).
Tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
(methoxymethyl)pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]methylpyrrolidinecarboxylate
Tert-butyl (2S,4S)(9-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidine
carboxylate (382 mg, 0.52 mmol) was suspended in DCM (8 mL) and activated MnO2 (1.35
g, 15.5 mmol) was added in a single portion. The reaction e was heated to 35 °C. After
stirring for 15 h, the mixture was cooled to rt and the slurry was filtered over celite. The filter
cake was washed with copious CH2Cl2 and MeOH and the te was concentrated under
reduced pressure. The crude material was taken on to the next step without further
purification to afford tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]-
4-(methoxymethyl)pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]methylpyrrolidinecarboxylate (347 mg, 91%).
Methyl R)methoxy[(2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-O-
methyl-L-threonyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinyl]oxobutanyl}carbamate
Tert-butyl )[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
(methoxymethyl)pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]methylpyrrolidinecarboxylate (174 mg, 0.24 mmol)
was dissolved in DCM (4 mL), MeOH (1 mL) and HCl (4 M in dioxane, 1 mL) was added.
The reaction e was stirred for 5 h and then concentrated under reduced pressure. The
crude residue was treated with ((2S,3R)methoxy(methoxycarbonylamino)butanoic acid
(92 mg, 0.48 mmol), HATU (182 mg, 0.48 mmol) and DMF (5 mL), then DIPEA (0.31 mL,
2.4 mmol) was added dropwise. After 35 min, the mixture was diluted with 10%
MeOH/EtOAc and washed successively with saturated aqueous NaHCO3 and brine. The
organics were dried over MgSO4, filtered and concentrated under reduced pressure. The
crude residue was purified by HPLC to afford methyl {(2S,3R)methoxy[(2S,4S)[9-
(2-{(2S,4S)[N-(methoxycarbonyl)-O-methyl-L-threonyl]methylpyrrolidinyl}-1H-
imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinyl]oxobutanyl}carbamate (72 mg, 34%). LCMS-ESI+:
calculated for N8O10: 880.41; observed [M+1]+: 882.39. 'H NMR (CD3OD): 8.558
(s, 1H), 8.123-7.572 (m, 7H), 5.436-5.391 (dd, 1H, J=7.2, 3.6 Hz), 5.252 (s, 2H), 5.220 (m,
1H), 4.493-4.444 (m, 2H), 4.287-4.206 (m, 2H), 3.756-3.256 (m, 21H), 2.834 (m, 1H), 2.717-
2.621 (m, 2H), 2.500 (m, 1H), 2.150 (m, 1H), 1.882 (m, 1H), 1.208 (d, 3H, J=6.4 Hz), 1.159-
1.099 (m, 6H).
e NL
O NH
O O MnO2
N H
N N CH2Cl2
N N Boc
tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-
1H-imidazolyl)-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
pyrrolidinecarboxylate
O NH
O O 1. HCl
N H
N 2. HATU, DIPEA, DMF
N O
N Boc HO
HN O
tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11- O
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl] (2S,3R)methoxy
methylpyrrolidinecarboxylate (methoxycarbonylami
no)butanoic acid
O NH
O O
N H
N N O
N N
H O
HN O
methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2S,3R)methoxy[(methoxycarbonyl)amino]butanoyl}
pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)methylpyrrolidinyl]methyloxobutanyl}carbamate
(2S,5S)oxo(8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)ethyl 1-((S)-
2-(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylate
To a solution of 3-(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-
one (750 mg, 2.02 mmol) in MeCN (20 mL) was added (2S,5S)((S)
(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylic acid (600 mg,
2.09 mmol) and DIPEA (0.35 mL, 2.02 mmol) and the solution was heated to 60 °C. After
stirring for 4 h, the solution was cooled to rt, and diluted with EtOAc and washed
successively with saturated aqueous NaHCO3 and brine. The organics were dried over
MgSO4, filtered and concentrated under reduced re. The crude residue was purified by
silica column chromatography (40% to 80% EtOAc/hexanes) to afford (2S,5S)oxo(8-
9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)ethyl 1-((S)
xycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylate (1.16 g,
quant.).
(2S,5S)(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl 1-((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidine
carboxylate
(2S,5S)oxo(8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)ethyl 1-
((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylate (400
mg, 0.61 mmol) was dissolved in a on of DCM (15 mL) and MeOH (6 mL), then treated
with pyridinium tribromide (409 mg, 1.28 mmol). At 2 h, an onal portion of pyridinium
tribromide (40 mg) was added. After stirring at RT for another 20 min, the reaction mixture
was diluted with DCM and 10% HCl, and extracted with DCM. The organic phase was dried
over MgSO4, filtered and concentrated under reduced re and the crude al was
carried on without further purification.
)tert-butyl 2-(3-(2-((2S,5S)((S)(methoxycarbonylamino)
methylbutanoyl)methylpyrrolidinecarbonyloxy)acetyl)oxo-8,9,10,11-
tetrahydro-5H-dibenzo[c,g]chromenyl) 4-methylpyrrolidine-1,2-dicarboxylate
(2S,5S)(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl 1-((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidine
carboxylate ) was treated with a solution of (2S,4S)(tert-butoxycarbonyl)
methylpyrrolidinecarboxylic acid (280 mg, 1.22 mmol) in Me-THF (6 mL) and Cs2CO3
(199 mg, 0.61 mmol). The stirred reaction e was heated to 50 ˚C for 2.5 h, then cooled
to RT and diluted with CH2Cl2 and extracted 3X. The organic phase was washed with brine,
then dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue
was purified by silica column chromatography (50% to 100% EtOAc/hexanes) to afford
(2S,4S)tert-butyl 2-(3-(2-((2S,5S)((S)(methoxycarbonylamino)methylbutanoyl)-
-methylpyrrolidinecarbonyloxy)acetyl)oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl) 4-methylpyrrolidine-1,2-dicarboxylate (441 mg, 90%).
Tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]methylpyrrolidine
carboxylate
(2S,4S)tert-butyl 2-(3-(2-((2S,5S)((S)(methoxycarbonylamino)
methylbutanoyl)methylpyrrolidinecarbonyloxy)acetyl)oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl) 4-methylpyrrolidine-1,2-dicarboxylate (441 mg, 0.55 mmol) and
NH4OAc (5 g, 65.0 mmol) were suspended in a solution of 10:1 PhMe/2-methoxyethanol (11
mL). The stirred reaction mixture was heated to 110 ˚C for 7 h, then cooled to RT and diluted
with EtOAc. The organic phase was washed with water, saturated aqueous NaHCO3, and
brine, then dried over MgSO4, filtered and concentrated under reduced pressure. The crude
residue was purified by silica column chromatography (0% to 30% MeOH/EtOAc) to afford
tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin
yl}-1H-imidazolyl)-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]methylpyrrolidinecarboxylate (266 mg, 63%).
Tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]methylpyrrolidine
carboxylate
Tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
pyrrolidinyl}-1H-imidazolyl)-1,4,5,11
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]methylpyrrolidine
ylate (266 mg, 0.35 mmol) was suspended in DCM (7 mL) and activated MnO2 (908
mg, 10.45 mmol) was added in a single portion. The reaction mixture was stirred overnight.
After stirring for 15 h, additional activated MnO2 (500 mg, 5.75 mmol) was added in a single
portion.
After stirring 2 h at 35 °C, the mixture was cooled to rt and the slurry was filtered
over celite. The filter cake was washed with copious CH2Cl2 and MeOH and the filtrate was
concentrated under d pressure. The crude material was taken on to the next step
without further purification to afford tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-
(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]methylpyrrolidine
ylate (266 mg, quant).
Methyl 1-[(2S,5S)(5-{2-[(2S,4S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
pyrrolidinyl]methyloxobutanyl}carbamate
Tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]methylpyrrolidinecarboxylate (266 mg, 0.23 mmol) was dissolved in
DCM (4 mL), MeOH (1mL) and HCl (4 M in dioxane, 1 mL) was added. The reaction
mixture was stirred for 1.5 h and then concentrated under reduced pressure. The crude residue
was treated with (2S,3R)methoxy(methoxycarbonylamino)butanoic acid (44 mg, 0.23
mmol), HATU (87 mg, 0.23 mmol) and DMF (5 mL), then DIPEA (0.3 mL, 1.75 mmol) was
added dropwise. After 30 min, the e was diluted with 10% MeOH/EtOAc and washed
successively with saturated aqueous NaHCO3 and brine. The organics were dried over
MgSO4, ed and concentrated under reduced pressure. The crude residue was purified by
HPLC to afford methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate (59 mg, 31%). LCMS-ESI+:
calculated for C45H54N8O8: ; observed [M+1]+: 836.89. 'H NMR (CD3OD): 8.186
(s, 1H), 7.800-7.291 (m, 7H), 5.258-5.213 (dd, 1H, J=7.2, 3.6 Hz), 5.027-4.918 (m, 4H),
4.620 (t, 1H, J=6.8 Hz), 4.246 (m, 1H), 4.116 (m, 1H), 3.972 (d, 1H, J=8.8 Hz), 3.701-3.675
(m, 1H), 3.503 (s, 3H), 3.479 (s, 3H), 3.177 (s, 3H), 2.554-2.191 (m, 3H), 1.906-1.821 (m,
6H), 1.392 (d, 2H, J=6.4 Hz), 1.113-0.728 (m, 12H).
Example NM
Tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate
Methyl [(2S)methyl{(2S,4S)methyl[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}oxobutanyl]carbamate (312 mg, 0.49 mmol), methyl (S)((2S,4S)-
2-(5-iodo-1H-imidazolyl)(methoxymethyl)pyrrolidinyl)methyloxobutan
ylcarbamate (219 mg, 0.54 mmol), Pd(PPh3)4 (58 mg, 0.05 mmol), PdCl2(dppf)2 (36 mg, 0.05
mmol), and K2CO3 (2M in H2O, 0.8 mL, 1.6 mmoL) were combined in DMSO (5 mL) and
dioxane (5 mL). The mixture was degassed with bubbling N2 for 10 min then heated to 95 ˚C
for 5 h. After g, the reaction mixture was diluted with EtOAc, and washed successively
with saturated aqueous NaHCO3 and brine. The cs were dried over MgSO4, filtered and
concentrated under reduced pressure. The crude e was purified by silica column
chromatography (0 %- 30% MeOH/EtOAc) to afford tert-butyl (2S,4S)[5-(2-{(2S,4S)
[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate (166 mg, 43%).
Methyl {(1R)[(2S,4S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
Tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (166 mg, 0.21 mmol) was
dissolved in DCM (4 mL), MeOH (1 mL) and HCl (4 M in dioxane, 1 mL) was added. The
reaction mixture was stirred for 2 h and then concentrated under reduced pressure. The crude
residue was treated with (R)(methoxycarbonylamino)phenylacetic acid (44 mg, 0.21
mmol), COMU (100 mg, 0.21 mmol) and DMF (5 mL), then DIPEA (0.18 mL, 1.05 mmol)
was added dropwise. After 1 h, the e was d with 10% MeOH/EtOAc and washed
successively with saturated aqueous NaHCO3 and brine. The organics were dried over
MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified by
HPLC to afford methyl {(1R)[(2S,4S)(5-{2-[(2S,4S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate (71 mg, 38%). LCMSESI
+: ated for C49H54N8O8: 882.41; observed : 884.34. 'H NMR (CD3OD):
8.462 (s, 1H), 8.029-7.471 (m, 7H), 7.394-7.343 (m, 5H), 5.410 (d, 2H, J=6.8 Hz), 5.300 (m,
1H), 5.233 (m, 2H), 4.341 (m, 1H), 4.236 (d, 1H, J=7.2 Hz), 3.603 (s, 3H), 3.551 (s, 3H),
3.522-3.241 (m, 8H), 2.650 (m, 1H), 2.550 (m, 2H), 1.977-1.926 (m, 4H), 1.221 (d, 3H, J=3.2
Hz), 0.779 (dd, 6H, J=19.2, 6.8 Hz).
e NO
CH3-MgBr Boc TFA CH3
O EtO
EtO NH N
THF, -40 - 0 oC DCM O
O Boc
EtO O (S)-ethyl 5-methyl-
(S)tert-butyl 2-ethyl 5- hydro-2H-
rolidine-1,2- (S)-ethyl 2-(tertpyrrole
dicarboxylate butoxycarbonylamino)
oxohexanoate carboxylate
(Boc)2O LiOH
H2 (g) CH3
CH3 EtO
EtO N
H O Boc EtOH, H2O
Pd/C O DIEA, DMAP
(2S,5S)tert-butyl 2-ethyl
(2S,5S)-ethyl 5- 5-methylpyrrolidine-1,2-
methylpyrrolidine dicarboxylate
carboxylate
TEMPO, NaBr
Borane NaClO, NaHCO3
CH3 CH3
HO CH3 H
N HO N
O Boc Dimethysulfide Boc
Boc DCM, 0 oC O
(2S,5S)-tert-butyl yl-
(2S,5S)(tert- (2S,5S)-tert-butyl 2-
butoxycarbonyl) (hydroxymethyl) 5-methylpyrrolidine
methylpyrrolidine carboxylate
methylpyrrolidine
carboxylic acid carboxylate
O Na2SO3
O CH3 I2, Na2CO3 CH3
N N
N N
Ammonia (aq) NH Boc NH Dioxane, H2O
Dioxane / H2O
MeOH, 10 oC I
(2S,5S)-tert-butyl 2-(1H- (2S,5S)-tert-butyl 2-(4,5-diiodoimidazolyl
) 1H-imidazolyl)
methylpyrrolidinecarboxylate methylpyrrolidinecarboxylate
CH3 N N
N 1. HCl / Dioxane
N NH
O O
NH Boc
2. ne MOC I HN
I HATU, DIEA O
(2S,5S)-tert-butyl 2-(5-iodo-1H- (2S)[(2S,5S)(5-iodo-1H-imidazolyl)-
imidazolyl)methylpyrrolidine- 5-methylpyrrolidinyl][(1-
1-carboxylate methoxyethenyl)amino]methylbutanone
hyl 2-(tert-butoxycarbonylamino)oxohexanoate
A solution of ethyl N-Boc roglutamate (20.0 g, 77.7 mmol) was in anhydrous
THF (150 mL) in a two neck round bottom under argon was cooled to -40 oC. magnesium
bromide solution (3.0 M in Ether, 28.5 mL, 85.5 mmol) was added to the reaction
mixture dropwise over 30 minutes. The reaction was stirred for 4 hrs at -40 oC then for 1 hr
at 0 oC. The reaction was partitioned n ethyl acetate and saturated ammonium
chloride solution and acidified with 1 N HCl. The aqueous layer was extracted two more
times with ethylacetate. The organic layers were combined and dried with sodium e.
The crude material was purified by column chromatography (20% - 40% EtOAc/hexanes) to
yield hyl 2-(tert-butoxycarbonylamino)oxohexanoate as a s oil and was used
directly in the following step.
(S)-ethyl 5-methyl-3,4-dihydro-2H-pyrrolecarboxylate
(S)-ethyl 2-(tert-butoxycarbonylamino)oxohexanoate in a 1 L flask was treated
with a trifluoro acetic acid / dichloromethane solution (1:1 mixture, 100 mL). Effervescence
was observed and the mixture was allowed to stir for 4 hours at room temperature. After
which time the volatiles were removed in vacuo to yield (S)-ethyl 5-methyl-3,4-dihydro-2H-
pyrrolecarboxylate as an oil, and used directly in the following step.
(2S,5S)-ethyl 5-methylpyrrolidinecarboxylate
The crude imine in a 1L flask was dissolved with ethanol (400 mL) was evacuated
and charged with argon three times (3x). Palladium on carbon (apprx. 750 mg, 10% w/w,
dry) was added and the reaction was ted of gas and charged with hydrogen gas (3x).
The on was allowed to stir under atmospheric hydrogen for 16 hours. The mixture was
filtered through a plug of celite and the filtrate was concentrated in vacuo. Diethyl ether was
added to the oil and a precipitate formed. The mixture was filtered to yield (2S,5S)-ethyl 5-
methylpyrrolidinecarboxylate, as a white solid (10.6 g, 67.4 mmol, 86.7% over three
. 1H NMR (400 MHz, cdcl 3) δ 4.48 (dd, 1H), 4.27 (q, 2H), 3.92 – 3.80 (m, 1H), 2.52 –
2.36 (m, 1H), 2.32 – 2.13 (m, 2H), 1.75 – 1.60 (m, 1H), 1.51 (d, 3H), 1.30 (t, 3H).
(2S,5S)tert-butyl 2-ethyl 5-methylpyrrolidine-1,2-dicarboxylate
To a solution of (2S,5S)-ethyl 5-methylpyrrolidinecarboxylate (7.0 g, 44.5 mmol)
in dichloromethane (250 mL), ditertbutylanhydride (10.7 g, 49.0 mmol),
diisopropylethylamine (17.1 mL, 98.0 mmol) dropwise over 10 minutes, and dimethyl amino
pyridine (0.27 g, 2.23 mmol) were added successively. Effervescence was observed and the
mixture was allowed to stir for 16 hours at room temperature. The reaction was washed with
HCl (250 mL, of 1N). The c layer was then dried with sodium sulfate. The crude
material was purified by column chromatography (5% - 25% EtOAc/hexanes) to yield
(2S,5S)tert-butyl 2-ethyl 5-methylpyrrolidine-1,2-dicarboxylate as an oil (6.46 g, 25.1
mmol, 56%). LCMS-ESI+: calc’d for C13H23NO4: 257.16 (M +); Found: 258.70 (M+H+).
(2S,5S)(tert-butoxycarbonyl)methylpyrrolidinecarboxylic acid
To a solution of (2S,5S)tert-butyl 2-ethyl ylpyrrolidine-1,2-dicarboxylate
(6.46 g, 25.1 mmol) in ethanol (20 mL) was added lithium hydroxide mono hydrate (2.11 g,
50.2 mmol) and zed water (12mL). The mixture was allowed to stir for 16 hours then
partitioned between ethylacetate and a 1:1 mixture of saturated brine and 1N HCl. The
aqueous layer was extracted an additional time with ethyl acetate. The organic layers were
combined, dried with sodium sulfate and the t was removed in vacuo to yield (2S,5S)-
1-(tert-butoxycarbonyl)methylpyrrolidinecarboxylic acid as a white solid (quant.) and
was used directly in the following step.
(2S,5S)-tert-butyl roxymethyl)methylpyrrolidinecarboxylate
To a solution of (2S,5S)(tert-butoxycarbonyl)methylpyrrolidinecarboxylic
acid (5.91 g, 25.8 mmol) in tetrahydrofuran at 0 oC, was added borane in dimethylsulfide (1.0
M, 3.4 mL, 34 mmol) dropwise. The reaction was stirred for 4 hours at 0 oC then 18 hours at
room temperature. The mixture was then cooled to 0 oC and methanol (70 mL) was added
dropwise. The reaction was warmed to room temperature and the solvents were removed in
vacuo. The residue was taken up in dichloromethane (200 mL) and extracted with saturated
sodium bicarbonate. The organic layer was dried with sodium sulfate and the solvent was
removed in vacuo to yield (2S,5S)-tert-butyl 2-(hydroxymethyl)methylpyrrolidine
carboxylate as a clear oil (5.15 g, 23.9 mmol, 93%) and was used directly in the following
step.
)-tert-butyl 2-formylmethylpyrrolidinecarboxylate
To a solution of (2S,5S)-tert-butyl 2-(hydroxymethyl)methylpyrrolidine
carboxylate (5.15 g, 23.9 mmol) in dichloromethane, was added TEMPO (0.075 g, 0.48
mmol), sodium bromide (0.246 g, 2.39 mmol) and sodium bicarbonate (0.442 g, 5.26 mmol).
Sodium hypochlorite (2.67 g, 35.9 mmol) of a 6% solution was added and the biphasic
mixture was vigorously stirred for 2 hours at room ature. The reaction mixture was
extracted two times with dichloromethane (2x100mL). The organic layers were combined
and washed with saturated sodium lfate solution, dried with sodium sulfate and the
solvent was removed in vacuo to yield )-tert-butyl ylmethylpyrrolidine
carboxylate (3.9 g, 18.29 mmol, 77%) as a slight colored oil and was used directly in the
following step.
(2S,5S)-tert-butyl 2-(1H-imidazolyl)methylpyrrolidinecarboxylate
To a solution of (2S,5S)-tert-butyl 2-formylmethylpyrrolidinecarboxylate (3.9g,
18.30 mmol) in MeOH (15 mL) and ammonium hydroxide (15 mL, 99.9%), glyoxal (11.7
mL, 40% w/v in water, 102.40 mmol) was added dropwise. The biphasic e turned
orange and turbid. The reaction was stirred vigorously overnight at room temperature. The
solvent was removed in vacuo. The crude mixture was redissolved in ethyl e and
washed with water. The s layer was washed an additional time with ethyl acetate.
The organic layers were combined and washed with brine, dried with sodium sulfate and the
solvent was removed in vacuo. The crude material was purified by column chromatography
85% to 100% ethyl acetate in hexanes to yield )-tert-butyl 2-(1H-imidazolyl)
methylpyrrolidinecarboxylate as an off white solid (3.47 g, 13.8 mmol, 75%). LCMS-
ESI+: calc’d for C13H21N3O2: 251.16 (M +); Found: 252.20 (M+H+).
(2S,5S)-tert-butyl 2-(4,5-diiodo-1H-imidazolyl)methylpyrrolidinecarboxylate
A 500 mL round bottom flask was charged with (2S,5S)-tert-butyl 2-(1H-imidazol
yl)methylpyrrolidinecarboxylate (3.47 g, 13.8 mmol), iodine (7.7 g, 30.4 mmol) and
sodium carbonate (4.54 g, 42.8 mmol). Dioxane (70 mL) and water (45 mL) was added to
mixture and the reaction was stirred vigorously ght in the dark. The reaction was then
partitioned between ethyl e and a 10% aqueous solution of sodium thiosulfate and
extracted. The aqueous layer was extracted an additional time with ethyl acetate. The organic
layers were combined, dried with sodium sulfate and the solvent was removed in vacuo. The
crude material was filtered through a plug of silica with 25% ethyl acetate in hexanes to yield
(2S,5S)-tert-butyl 2-(4,5-diiodo-1H-imidazolyl)methylpyrrolidinecarboxylate as a
white solid (4.28 g, 8.50 mmol, 62%). LCMS-ESI+: calc’d for C13H19I2N3O2: 502.96 (M +);
Found: 503.94 (M+H+).
(2S,5S)-tert-butyl 2-(5-iodo-1H-imidazolyl)methylpyrrolidinecarboxylate
To a solution of (2S,5S)-tert-butyl -diiodo-1H-imidazolyl)
methylpyrrolidinecarboxylate (4.28 g, 8.50 mmol) in ethanol (75 mL) and water (75 mL),
sodium thiosulfate (10.72 g, 85.1 mmol) was added and the reaction mixture was stirred
vigorously for 1 hour at 100 oC, 16 hours at 90 oC, and 5 hours at 100 oC. The reaction
mixture was partitioned between ethyl acetate and water. The aqueous layer was washed
additionally with ethyl acetate and the organic layers were combined. The organic layer was
dried with sodium e, trated and the crude material was purified by column
chromatography to yield (2S,5S)-tert-butyl 2-(5-iodo-1H-imidazolyl)methylpyrrolidine-
1-carboxylate as a white solid (2.34 g, 6.20 mmol, 73%). 1H NMR (400 MHz, cdcl
3) δ 7.04
(s, 1H), 4.89 (dd, 1H), 3.92 (m, 1H), 2.91 (s, 1H), 2.18 – 2.06 (m, 2H), 1.78 (m, 1H), 1.52 (m,
1H), 1.48 (s, 9H), 1.13 (d, 3H).
(2S)[(2S,5S)(5-iodo-1H-imidazolyl)methylpyrrolidinyl][(1-
methoxyethenyl)amino]methylbutanone
A round bottom flask was charged with (2S,5S)-tert-butyl 2-(5-iodo-1H-imidazol
yl)methylpyrrolidinecarboxylate (1.5 g, 3.98 mmol) and treated with an excess of
hloric acid (100 mL of 4.0M in dioxane). The mixture was stirred vigorously for 3
hours in which time a precipitate formed and the solvent was removed in vacuo. To a mixture
of the crude intermediate, (S)(methoxycarbonylamino)methylbutanoic acid (0.836 g,
4.77 mmol), HATU (1.81 g, 4.77 mmol) in dichloromethane (25 mL), diisopropylethylamine
(3.46 mL, 19.9 mmol) was then added dropwise and was stirred over night under nitrogen.
The reaction mixture was partitioned ethyl acetate and ted sodium bicarbonate. The
organic layer was dried with sodium sulfate, the solvent removed in vacuo. The crude
product was ed by column chromatography to yield (2S)[(2S,5S)(5-iodo-1H-
imidazolyl)methylpyrrolidinyl][(1-methoxyethenyl)amino]methylbutanone
as a white solid (1.63 g, 3.75 mmol, 94%). LCMS-ESI+: calc’d for C15H23IN4O3: 434.08 (M
+); Found: 435.51 (M+H+).
Example NP
Methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}(methoxymethyl)pyrrolidinyl]-1,11 dihydroisochromeno
[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
The synthesis of this compound was prepared according to the procedure of example
LR-1 with the following modification. During the Suzuki coupling, -[(2S,5S)(5-
iodo-1H-imidazolyl)methylpyrrolidinyl][(1-methoxyethenyl)amino]
methylbutanone was used in lieu of (2S)[(2S)(5-bromo-1H-imidazolyl)pyrrolidin-
2-[(1-methoxyethenyl)amino]methylbutanone. The crude material was purified
by preparative HPLC to provide methyl {(2S)[(2S,5S)(5-{2-[(2S,4S){(2R)
[(methoxycarbonyl)amino]phenylacetyl}(methoxymethyl) pyrrolidinyl]-1,11
dihydroisochromeno [4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate as a white solid (17 mg, 0.019
mmol, 17%). 1H NMR (400 MHz, cd3od) δ 8.63 (s, 1H), 8.19 (d, 1H), 8.04 (m, 1H), 7.87 (m,
2H), 7.66 (m, 2H), 7.52 – 7.39 (m, 6H), 5.50 (m, 2H), 5.32 (s, 2H), 5.16 (m, 1H), 4.12 (m,
1H), 3.80 (m, 4H), 3.66 (s, 6H), 3.43 (m, 4H), 3.23 (s, 3H), 2.72-1.99 (m, 9H), 1.56 (d, 3H),
1.29 (m, 1H), 0.99 (d, 3H), 0.88 (d, 3H).
Example NQ
O O
O N N
O N H
B N
O N Boc
Pd(PPh3)4, PdCl2(dppf),
K2CO3, DME/ DMF, 85°C
tert-butyl 2-[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinecarboxylate
O 1. HCl, EtOH, 60°C
H O
O O H
N N 2.
N N N Boc O
H O
H N O
tert-butyl (2S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]- O H
-methylpyrrolidinyl}-1H-imidazolyl)-3,11-
COMU, DIPEA, DMF, RT
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinecarboxylate
H O
O O H
N N
N N N
N O
methyl {(2S)[(2S,5S)(5-{2-[(2S){(2R)[(methoxycarbonyl)amino]
acetyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)methylpyrrol
idinyl]methyloxobutanyl}carbamate
Methyl {(2S)[(2S,5S)(5-{2-[(2S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)methylpyrrolidinyl]methyloxobutan
yl}carbamate
The synthesis of this compound was prepared according to the procedure of example
LQ with the following modification. During the Suzuki coupling, -[(2S,5S)(5-iodo-
dazolyl)methylpyrrolidinyl][(1-methoxyethenyl)amino]methylbutan
one was used in lieu of (2S)[(2S)(5-bromo-1H-imidazolyl)pyrrolidinyl][(1-
methoxyethenyl)amino]methylbutanone. The crude material was purified by
preparative HPLC to provide methyl {(2S)[(2S,5S)(5-{2-[(2S){(2R)
[(methoxycarbonyl)amino]phenylacetyl}pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate as a white solid (110 mg, 0.131
mmol, 57 %). 1H NMR (400 MHz, cd
3od) δ 8.65 (s, 1H), 8.21 (d, 1H), 8.04 (m, 2H), 7.91 (s,
1H), 7.81 (m, 1H), 7.67 (m, 2H), 7.46 (m, 6H), 5.59 (s, 1H), 5.50 (dd, 1H), 5.33 (s, 2H), 5.22
– 5.09 (m, 1H), 4.14 (m, 2H), 3.74 (s, 1H), 3.65 (m, 6H), 3.52 – 3.37 (m, 2H), 2.60 – 1.89 (m,
11H), 1.56 (d, 3H), 1.29 (d, 1H), 0.99 (d, 3H), 0.88 (d, 3H).
Example NR
H O
O O H
N N 1. HCl, EtOH, 60°C
N N N Boc 2.
tert-butyl -[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L- O
valyl]methylpyrrolidinyl}-1H-imidazolyl)-3,11- H N O
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol O H
yl]pyrrolidinecarboxylate COMU, DIPEA, DMF, RT
H O
N H
O O
N N
N HCl, Dioxane
N N N
H Boc
methyl {(2S)[(2S,5S)(5-{2-[(2S){(2R)[(tert-butoxycarbonyl)amino]-
2-phenylacetyl}pyrrolidinyl]-3,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)-
ylpyrrolidinyl]methyloxobutanyl}carbamate
H O
N H
O O
N N
N N N
H H
methyl [(2S){(2S,5S)[5-(2-{(2S)[(2R)aminophenylacetyl]pyrrolidinyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
methylpyrrolidinyl}methyloxobutanyl]carbamate
Methyl [(2S){(2S,5S)[5-(2-{(2S)[(2R)aminophenylacetyl]pyrrolidinyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
methylpyrrolidinyl}methyloxobutanyl]carbamate
The synthesis of this compound was prepared according to Example NQ with the
ing modifications. During the amide coupling, (R)(tert-butoxycarbonylamino)
phenylacetic acid was used in lieu of (R)(methoxycarbonylamino)phenylacetic acid.
This was then treated with an excess of hydrochloric acid (15 mL, 4.0 M in Dioxane) for 2
hours. The crude t was purified by HPLC to provide methyl [(2S){(2S,5S)[5-(2-
{(2S)[(2R)aminophenylacetyl]pyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
pyrrolidinyl}methyloxobutanyl]carbamate as a white solid (153 mg, 0.196
mmol, 74%). 1H NMR (400 MHz, cd 3od) δ 8.63 (s, 1H), 8.20 (d, 1H), 7.99 (m, 1H), 7.93 (m,
2H), 7.80 (m, 2H), 7.72 – 7.64 (m, 2H), 7.63 – 7.52 (m, 5H), 5.52 (dd, 1H), 5.44 (m, 1H),
.33 (s, 2H), 5.21 – 5.10 (m, 1H), 4.80 (m, 2H), 4.14 (m, 1H), 4.02 (m, 1H), 3.75 (s, 1H),
3.67 (s, 3H), 3.12 (dd, 1H), 2.72 – 2.13 (m, 7H), 2.00 (m, 3H), 1.56 (d, 3H), 1.30 (d, 1H),
0.98 (d, 3H), 0.88 (d, 3H).
Example OE
(2S,5S)-Ethyl 1-((S)(methoxycarbonylamino)methylbutanoyl)
methylpyrrolidinecarboxylate
(2S,5S)-Ethyl 5-methylpyrrolidinecarboxylate-TFA (10.0 g, 39.3 mmol), (S)
(methoxycarbonylamino)methylbutanoic acid (6.88 g, 39.3 mmol) and HATU (14.9 g,
39.3 mmol) were combined in DMF (100 mL) and DIPEA (15.0 mL, 86.5 mmol) was added.
After ng for 1 h at RT, the reaction mixture was diluted with EtOAc. The organic phase
was washed successively with 10% HCl, saturated aqueous NaHCO3 and brine, then dried
over MgSO4, filtered and concentrated under reduced pressure to afford (2S,5S)-ethyl 1-((S)-
2-(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylate. The crude
material was carried on without further purification.
(2S,5S)((S)(Methoxycarbonylamino)methylbutanoyl)methylpyrrolidine
ylic acid
(2S,5S)-Ethyl 1-((S)(methoxycarbonylamino)methylbutanoyl)
methylpyrrolidinecarboxylate (39.3 mmol, ng complete conversion from the
previous transformation) was suspended in MeOH (200 mL) and s LiOH (1.0 M, 100
mL, 100 mmol) was added. The reaction mixture was stirred o/n, then concentrated under
reduced pressure to remove most of the MeOH. The aqueous solution was washed 2x with
DCM before being acidified to pH~1-2 with 10% HCl. The acidic aqueous phase was then
extracted 5x with EtOAc. The combined EtOAc extracts were dried over MgSO4 filtered and
concentrated under reduced pressure to afford (2S,5S)((S)(Methoxycarbonylamino)
methylbutanoyl)methylpyrrolidinecarboxylic acid (6.89 g, 56% over 2 steps).
Example OF
potassium
O vinyltrifluoroborate, O
O Pd(OAc)2, SPhos, K2CO3 O
propanol
(reflux)
ro-10,11-dihydro-5H- 3-vinyl-10,11-dihydro-5H-
dibenzo[c,g]chromen-8(9H)-one dibenzo[c,g]chromen-8(9H)-one
O Boc
1. NBS HO2C N Cs2CO3
H2O/THF/DMSO O O
+ 2-Me-THF
2. MnO2, DCM Br
3-(2-bromoacetyl)-10,11-dihydro-5H- (2S,4S)(tert-butoxycarbonyl)
dibenzo[c,g]chromen-8(9H)-one (methoxymethyl)pyrrolidine
ylic acid
MeO O
pyridinium tribromide,
O O O DCM/MeOH
Boc O
(2S,4S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-
tetrahydro-5H-dibenzo[c,g]chromenyl)ethyl) 4-
(methoxymethyl)pyrrolidine-1,2-dicarboxylate
NHCO2Me
MeO O
O O O
+ O N Cs2CO3
Boc O Br
HO 2-MeTHF;
50 oC
(2S,4S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H- (2S,5S)((S)
o[c,g]chromenyl)oxoethyl) 1-tert-butyl 4- (methoxycarbonylamino)
(methoxymethyl)pyrrolidine-1,2-dicarboxylate methylbutanoyl)methylpyrrolidine
carboxylic acid
MeO2CHN
H O H N
N N N MnO2
N N DCM
tert-butyl )[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate
MeO2CHN
H O H N
1. HCl/dioxane; DCM
N N N
N 2. HATU, DIPEA, DMF
N O
NHCO2Me
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L- HO (2S,3S)
(methoxycarbonylamino)
valyl]methylpyrrolidinyl}-1,11- methylpentanoic acid
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate
MeO2CHN
H O H N
N N N
N N
N O
methyl {(2S,3S)[(2S,4S)(5-{2-[(2S,5S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)(methoxymethyl)pyrrolidinyl]methyloxopentanyl}carbamate
3-Vinyl-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
A 3-neck oven-dried 500 mL round-bottom flask was cooled under Ar, then d
with 3-Chloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (12.0 g, 42.1 mmol),
potassium vinyltrifluoroborate (8.47 g, 6.32 mmol), Pd(OAc)2 (473 mg, 2.11 mmol), SPhos
(1.74 g, 4.25 mmol), K2CO3 (17.5 g, 126 mmol) and anhydrous propanol (120 mL). The
reaction mixture was sparged with Ar for 16 min, then heated to reflux for 5.5 h. Upon
completion, the reaction mixture was cooled to RT and concentrated under reduced pressure.
The crude e was suspended in DCM, then washed with H2O and brine. The organic
solution was dried over MgSO4, ed and concentrated under reduced pressure. The
resulting residue was further purified via silica plug, eluting with DCM to afford 3-vinyl-
,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (10.2 g, 87%).
3-(2-Bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
3-Vinyl-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (9.98 g, 36.1 mmol) was
dissolved in a stirred solution of THF (70 mL), DMSO (70 mL) and H2O (35 mL). NBS (6.75
g, 37.9 mmol) was added in a single portion and the reaction mixture was stirred at RT for 33
min. Upon completion, the reaction medium was diluted with EtOAc and washed twice with
H2O and once with brine. The organic phase was dried over MgSO4, filtered and concentrated
under reduced pressure. The resulting crude bromohydrin was suspended in DCM (200 mL)
and treated with activated MnO2 (62.7 g, 722 mmol). After stirring for 15 h at RT, the
reaction mixture was filtered over celite and the filter cake was rinsed several times with
DCM. The combined te (~400 mL) was treated with MeOH (~100 mL) and the e
was gradually concentrated under d pressure, causing solid material to precipitate from
solution. When the liquid volume reached ~200 mL, the solid was filtered off and rinsed with
MeOH. The concentration/precipitation/filtration/rinsing sequence was performed 2x more,
resulting in the collection of 3 crops of powdered romoacetyl)-10,11-dihydro-5H-
dibenzo[c,g]chromen-8(9H)-one (7.49 g, 56% over 2 steps).
(2S,4S)tert-Butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl)ethyl) 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate
romoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (7.47 g, 20.1
mmol) and (2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic acid
(5.22 g, 20.1 mmol) were suspended in 2-Me-THF (75 mL) and treated with Cs2CO3 (3.27 g,
.1 mmol). After stirring 4 h at RT, the reaction mixture was diluted with DCM. The
organic layer was washed with H2O. The aqueous layer was then back extracted 2x with
DCM. The combined organics were dried over MgSO4, filtered and concentrated under
reduced pressure. The crude residue was purified by silica column chromatography (10% to
50% EtOAc/DCM) to afford (2S,4S)tert-butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-
enzo[c,g]chromenyl)ethyl) 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate (7.73
g, 70%).
(2S,4S)(2-(9-Bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate
(2S,4S)tert-Butyl 2-(2-oxo(8-oxo-8,9,10,11-tetrahydro-5H-
o[c,g]chromenyl)ethyl) 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate (7.66 g,
13.9 mmol) was ved in a solution of DCM (100 mL) and MeOH (40 mL), then treated
with pyridinium mide (4.90 g, 15.3 mmol). After stirring at RT for 1.75 h, the reaction
e was diluted with DCM and washed successively with 10% HCl, saturated aqueous
NaHCO3 and brine. The organic phase was dried over MgSO4, filtered and concentrated
under reduced pressure and the crude material was d on without further purification.
(2S,4S)tert-Butyl 2-(2-(9-((2S,5S)((S)(methoxycarbonylamino)
methylbutanoyl)methylpyrrolidinecarbonyloxy)oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl)oxoethyl) 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate
)(2-(9-Bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate (8.76 g, 13.94 mmol)
was treated with a solution of (2S,5S)((S)(methoxycarbonylamino)methylbutanoyl)-
5-methylpyrrolidinecarboxylic acid (6.85 g, 23.92 mmol) in 2-Me-THF (70 mL) and
Cs2CO3 (3.63 g, 11.15 mmol). The stirred reaction mixture was heated to 50 ˚C for 20 h, then
cooled to RT and diluted with EtOAc. The organic phase was washed with H2O and brine,
then dried over MgSO4, filtered and concentrated under reduced pressure. The crude e
was purified by silica column chromatography (0% to 30% MeOH/EtOAc) to afford (2S,4S)-
1-tert-butyl 2-(2-(9-((2S,5S)((S)(methoxycarbonylamino)methylbutanoyl)
methylpyrrolidinecarbonyloxy)oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl)oxoethyl) 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate (10.47 g, 90%).
tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin-
2-yl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate
(2S,4S)tert-Butyl 9-((2S,5S)((S)(methoxycarbonylamino)
methylbutanoyl)methylpyrrolidinecarbonyloxy)oxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl)oxoethyl) 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate
(10.47 g, 12.56 mmol) and NH4OAc (50.9 g, 660 mmol) were suspended in a on of 10:1
-methoxyethanol (132 mL). The stirred reaction mixture was heated to 110 ˚C for 4.5
h, then cooled to RT and diluted with EtOAc. The organic phase was washed 3x with
saturated aqueous NaHCO3, then dried over MgSO4, filtered and concentrated under reduced
pressure. The crude residue was purified by silica column chromatography (0% to 30%
MeOH/EtOAc) to afford tert-butyl )[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate (8.33 g,
84%).
tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin-
2-yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl](methoxymethyl)pyrrolidinecarboxylate
tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate (8.33 g, 1.049 mmol)
was ded in DCM and activated MnO2 (55.0 g, 630 mmol) was added in a single
portion. After 13 h, MeOH (200 mL) was added and the slurry was filtered over celite. The
filter cake was washed with MeOH (600 mL) and the te was concentrated under reduced
pressure. The crude material was purified by silica column chromatography (0% to 45%
MeOH/EtOAc) to afford tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate (4.85 g, 58%).
Methyl {(2S,3S)[(2S,4S)(5-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
xymethyl)pyrrolidinyl]methyloxopentanyl}carbamate
tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (179 mg, 0.226 mmol) was
ved in DCM (4 mL) and HCl (4.0 M in dioxane, 1 mL) was added. The reaction
mixture was stirred for 1 h at RT then concentrated under reduced pressure. The ing
residue was treated with (2S,3S)(methoxycarbonylamino)methylpentanoic acid (51 mg,
0.27 mmol), HATU (95 mg, 0.25 mmol), DMF (2 mL) and DIPEA (0.39 mL, 2.3 mmol).
After stirring for 6 min, the reaction was quenched with H2O, filtered and purified by reverse
phase HPLC to afford methyl {(2S,3S)[(2S,4S)(5-{2-[(2S,5S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxopentanyl}carbamate (116 mg, 59%). MS
(ESI) m/z 864 [M + H]+. 1H NMR (400 MHz, cd 3od) δ 8.57 (d, J = 14.7 Hz, 1H), 8.45 (s,
1H), 8.20 (d, J = 14.4 Hz, 1H), 8.15 – 7.98 (m, 2H), 7.91 (dd, J = 21.8, 14.1 Hz, 2H), 7.85 –
7.69 (m, 2H), 7.69 – 7.48 (m, 2H), 5.42 – 5.12 (m, 5H), 4.34 (dd, J = 22.3, 13.7 Hz, 1H), 4.30
– 4.10 (m, 2H), 3.87 – 3.73 (m, 1H), 3.73 – 3.63 (m, 7H), 3.62 – 3.48 (m, 2H), 3.48 – 3.38
(m, 4H), 3.35 (s, 3H), 2.95 – 2.70 (m, 1H), 2.70 – 2.55 (m, 2H), 2.55 – 2.20 (m, 2H), 2.20 –
1.91 (m, 3H), 1.77 (d, J = 42.0 Hz, 1H), 1.65 (d, J = 6.6 Hz, 3H), 1.43 (t, J = 24.6 Hz, 1H),
1.28 (d, J = 6.2 Hz, 1H), 1.23 – 1.01 (m, 3H), 0.98 (d, J = 6.6 Hz, 3H), 0.90 (dd, J = 13.1, 5.9
Hz, 10H).
Example OG
Methyl {(2S)[(2S,5S)(9-{2-[(2S,4S)[N-(methoxycarbonyl)-L-alloisoleucyl]-
4-(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate was prepared from tert-butyl (2S,4S)[5-(2-{(2S,5S)
[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate by the same method ed in the synthesis of
methyl {(2S,3S)[(2S,4S)(5-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)(methoxymethyl)pyrrolidinyl]methyl
oxopentanyl}carbamate, replacing )(methoxycarbonylamino)methylpentanoic
acid with (2S,3R)(methoxycarbonylamino)methylpentanoic acid. MS (ESI) m/z 864 [M
+ H]+. 1H NMR (400 MHz, cd 3od) δ 8.62 – 8.41 (m, 1H), 8.22 (s, 1H), 8.07 (dt, J = 20.1, 10.0
Hz, 1H), 7.89 (dt, J = 35.6, 15.6 Hz, 2H), 7.77 (dd, J = 20.3, 7.0 Hz, 2H), 7.68 – 7.48 (m,
2H), 5.95 (d, J = 5.0 Hz, 1H), 5.42 – 5.13 (m, 4H), 4.47 (t, J = 5.5 Hz, 1H), 4.40 – 4.09 (m,
2H), 3.80 – 3.73 (m, 1H), 3.73 – 3.62 (m, 6H), 3.57 (dt, J = 16.1, 9.7 Hz, 2H), 3.40 (s, 3H),
3.34 (d, J = 7.5 Hz, 1H), 2.81 (dd, J = 18.4, 12.5 Hz, 1H), 2.63 (td, J = 13.3, 6.8 Hz, 2H),
2.55 – 2.18 (m, 2H), 2.16 – 1.77 (m, 4H), 1.65 (d, J = 6.6 Hz, 3H), 1.50 – 1.31 (m, 1H), 1.26
(dd, J = 15.6, 6.7 Hz, 2H), 1.17 – 1.03 (m, 2H), 0.98 (dd, J = 6.7, 4.5 Hz, 5H), 0.89 (dd, J =
15.5, 7.8 Hz, 3H), 0.86 – 0.74 (m, 3H).
Example OH
MeO2CHN
H H N 1. HCl/dioxane; DCM
N N N
Boc 2. COMU, DIPEA, DMF
N N O
NHCO2Me
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1,4,5,11- Ph
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (R)
(methoxycarbonylamino)
acetic acid
MeO2CHN
H H N
Ph N N N
N N
MeO2CHN O
methyl {(1R)[(2S,4S)(5-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)(methoxymethyl)pyrrolidinyl]oxo
phenylethyl}carbamate
Methyl {(1R)[(2S,4S)(5-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate (102 mg, 0.128 mmol)
was dissolved in DCM (4 mL) and HCl (4.0 M in dioxane, 2.0 mL, 8.0 mmol) was added.
After stirring at RT for 30 min, the solution was concentrated under reduced pressure. The
residue was treated with (R)(methoxycarbonylamino)phenylacetic acid (29 mg, 0.141
mmol), COMU (60 mg, 0.141 mmol), DMF (3.0 mL) and DIPEA (0.223 mL, 1.28 mmol).
After stirring at RT for 20 min, the reaction e was diluted with EtOAc. The organic
solution was washed with saturated s NaHCO3 and brine, then dried over MgSO4,
filtered and trated under reduced pressure. The crude material was purified by reversephase
HPLC to afford methyl {(1R)[(2S,4S)(5-{2-[(2S,5S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate as the bis-TFA salt (82.4
mg, 60%). MS (ESI) m/z 866 [M + H]+. 1H NMR (400 MHz, cd 3od) δ 7.94 – 7.67 (m, 4H),
7.59 (d, J = 9.1 Hz, 1H), 7.52 (s, 1H), 7.48 – 7.33 (m, 4H), 7.11 (d, J = 18.7 Hz, 1H), 5.68 (d,
J = 6.3 Hz, 1H), 5.48 – 5.33 (m, 1H), 5.23 (dd, J = 24.1, 15.7 Hz, 1H), 5.17 – 5.03 (m, 3H),
4.22 (dd, J = 17.0, 9.6 Hz, 1H), 4.16 – 4.01 (m, 1H), 3.91 (d, J = 24.1 Hz, 1H), 3.83 – 3.68
(m, 1H), 3.68 – 3.59 (m, 3H), 3.59 – 3.49 (m, 3H), 3.38 (ddd, J = 15.9, 9.6, 5.7 Hz, 2H), 3.28
– 3.14 (m, 5H), 3.10 (dd, J = 14.0, 8.2 Hz, 1H), 3.00 (dd, J = 17.8, 9.6 Hz, 1H), 2.92 (dd, J =
14.5, 6.7 Hz, 1H), 2.73 – 2.41 (m, 2H), 2.40 – 2.11 (m, 2H), 2.11 – 1.83 (m, 2H), 1.54 (t, J =
9.7 Hz, 2H), 1.24 (d, J = 6.2 Hz, 1H), 1.06 (t, J = 8.0 Hz, 1H), 0.99 (d, J = 6.8 Hz, 1H), 0.94
(d, J = 6.6 Hz, 2H), 0.85 (d, J = 6.7 Hz, 2H).
Example OI
MeO O
O O O
Boc O Br
(2S,4S)(2-(9-bromooxo-8,9,10,11-
ydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 4-
MeO (methoxymethyl)pyrrolidine-1,2-dicarboxylate
H O H BocN
N N 1. HCl/dioxane; DCM
N OMe
N 2. HATU, DIPEA, DMF
N O
NHCO2Me
tert-butyl (2S,4S)(5-{2-[(2S,4S)(tert-butoxycarbonyl) HO (S)
(methoxymethyl)pyrrolidinyl]-1,11- (methoxycarbonylamino)
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H- methylbutanoic acid
imidazolyl)(methoxymethyl)pyrrolidinecarboxylate
MeO2CHN
H O H N
N N N OMe
N N
MeO2CHN O
methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}-
hoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-
1H-imidazolyl)(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
tert-Butyl (2S,4S)(5-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)(methoxymethyl)pyrrolidinecarboxylate was prepared from
(2S,4S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) -butyl 4-(methoxymethyl)pyrrolidine-1,2-dicarboxylate by the same method
employed in the synthesis of tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate, replacing (2S,5S)
((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylic acid
with (2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic acid.
Methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
tert-Butyl (2S,4S)(5-{2-[(2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)(methoxymethyl)pyrrolidinecarboxylate (137 mg, 0.179 mmol)
was dissolved in DCM (5 mL) and HCl (4.0 M in dioxane, 1 mL) was added. After stirring at
RT for 1.5 h, the reaction e was concentrated under reduced pressure. The crude
residue was treated with (S)(methoxycarbonylamino)methylbutanoic acid (69 mg, 0.39
mmol), HATU (149 mg, 0.393 mmol), DMF (2.0 mL) and DIPEA (0.31 mL, 1.8 mmol).
After stirring for 15 min at RT, the reaction mixture was quenched with water and purified by
HPLC to provide methyl 1-[(2S,4S)(5-{2-[(2S,4S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate (123 mg). MS (ESI)
m/z 880 [M + H]+. 1H NMR (400 MHz, cd 3od) δ 8.48 (s, 1H), 8.05 (t, J = 11.2 Hz, 1H), 7.92
(dd, J = 19.7, 10.1 Hz, 2H), 7.74 (s, 2H), 7.59 – 7.44 (m, 2H), 5.49 (s, 1H), 5.40 (dt, J = 16.3,
8.1 Hz, 1H), 5.31 – 5.15 (m, 3H), 4.47 – 4.10 (m, 4H), 3.86 – 3.44 (m, 12H), 3.39 (dd, J =
13.2, 7.1 Hz, 6H), 2.94 – 2.57 (m, 4H), 2.25 – 1.94 (m, 4H), 1.02 – 0.82 (m, 12H).
Example OJ
Methyl S)[(2S,4S)(5-{2-[(2S,4S){(2S,3S)
[(methoxycarbonyl)amino]methylpentanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxopentanyl}carbamate was prepared from
tert-Butyl (2S,4S)(5-{2-[(2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidin
yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinecarboxylate using the same method employed in the synthesis
of methyl {(2S)[(2S,4S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
xymethyl)pyrrolidinyl]methyloxobutanyl}carbamate, replacing with (S)
(methoxycarbonylamino)methylbutanoic acid with )(methoxycarbonylamino)
methylpentanoic acid. MS (ESI) m/z 908 [M + H]+.
Example OK
MeO O
O O O
Boc O Br
(2S,4S)(2-(9-bromooxo-8,9,10,11-
tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 4-
(methoxymethyl)pyrrolidine-1,2-dicarboxylate
MeO2CHN
O 1. HCl/dioxane; DCM
H O H N
N N N 2. COMU, DIPEA, DMF
N O
NHCO2Me
tert-butyl (2S,4S)[5-(2-{(2S)[N-
xycarbonyl)-L-valyl]pyrrolidinyl}-1,4,5,11- Ph
tetrahydroisochromeno[4',3':6,7]naphtho[1,2- (R)
d]imidazolyl)-1H-imidazolyl] (methoxycarbonylamino)
(methoxymethyl)pyrrolidinecarboxylate phenylacetic acid
MeO2CHN
H O H N
Ph N N N
N N
MeO2CHN O
methyl {(1R)[(2S,4S)(5-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
tert-Butyl (2S,4S)[5-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-
1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate was synthesized from (2S,4S)(2-(9-bromo
oxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tert-butyl 4-
(methoxymethyl)pyrrolidine-1,2-dicarboxylate using the same methods described for the
synthesis of tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
pyrrolidinyl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate, substituting (S)((S)-
2-(methoxycarbonylamino)methylbutanoyl)pyrrolidinecarboxylic acid for (2S,5S)
((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylic acid.
Methyl {(1R)[(2S,4S)(5-{2-[(2S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)(methoxymethyl)pyrrolidinyl]oxo
phenylethyl}carbamate was synthesized from tert-butyl )[5-(2-{(2S)[N-
(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate using the same method employed for the
synthesis of methyl {(1R)[(2S,4S)(5-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]-
3-methylbutanoyl}methylpyrrolidinyl]-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate tuting tert-butyl
(2S,4S)[5-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate for tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-
(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate. MS (ESI) m/z 871 [M + H]+. 1H NMR (400
MHz, cd3od) δ 7.87 (ddd, J = 20.5, 15.3, 6.8 Hz, 4H), 7.65 (s, 1H), 7.50 – 7.38 (m, 5H), 7.17
(s, 1H), 5.41 (d, J = 24.5 Hz, 1H), 5.28 (t, J = 8.3 Hz, 1H), 5.20 (d, J = 7.3 Hz, 3H), 4.24 (d, J
= 7.2 Hz, 1H), 4.12 (d, J = 10.3 Hz, 1H), 4.03 – 3.94 (m, 1H), 3.89 (dd, J = 15.4, 8.6 Hz, 1H),
3.77 (t, J = 9.6 Hz, 1H), 3.72 – 3.64 (m, 4H), 3.63 – 3.52 (m, 4H), 3.43 (qd, J = 9.5, 5.6 Hz,
3H), 3.30 (s, 3H), 3.24 – 3.08 (m, 2H), 2.97 (dd, J = 11.6, 5.4 Hz, 2H), 2.59 (dt, J = 21.1, 7.8
Hz, 3H), 2.29 (s, 1H), 2.24 – 2.14 (m, 2H), 2.11 – 1.85 (m, 2H), 0.92 (dd, J = 15.8, 6.7 Hz,
6H).
Example OL
tert-Butyl (2S,4S)[5-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-
ihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate was prepared according to the method described
for the synthesis of tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate, substituting tert-butyl (2S,4S)-
2-[5-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate for tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-
xycarbonyl)-L-valyl]methylpyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate.
Methyl {(2S)[(2S)(9-{2-[(2S,4S)[(2R)aminophenylacetyl]
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinyl]methyl
oxobutanyl}carbamate was prepared according to the method described for the synthesis
of methyl (S)((2S,4S)(2'-((2S,4S)((R)aminophenylacetyl)
(methoxymethyl)pyrrolidinyl)-1H,1'H-7,7'-binaphtho[1,2-d]imidazolyl)
methylpyrrolidinyl)methyloxobutanylcarbamate, substituting methyl (S)
((2S,4S)(2'-((2S,4S)((R)tert-butoxycarbonylaminophenylacetyl)
(methoxymethyl)pyrrolidinyl)-1H,1'H-7,7'-binaphtho[1,2-d]imidazolyl)
methylpyrrolidinyl)methyloxobutanylcarbamate with
tert-butyl )[5-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate. MS (ESI) m/z 811 [M + H]+.
Example OM
O O
3-(2-bromoacetyl)-10,11-dihydro-
5H-dibenzo[c,g]chromen-8(9H)-one
H O H N
N N N OMe MnO2
N N DCM
MeO2CHN O
tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
H O H N
N N N OMe 1. HCl/dioxane; DCM
N N 2. HATU, DIPEA, DMF
N O O
NHCO2Me
tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)- HO (2S,3R)
l]methylpyrrolidinyl}-1H-imidazolyl)-1,11- O methoxy
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]- (methoxycarbonyla
hoxymethyl)pyrrolidinecarboxylate mino)butanoic acid
MeO2CHN O
H O H N
N N N OMe
N N
N O
methyl {(2S)[(2S,4S)(5-{2-[(2S,5S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}(methoxymethyl)pyrrolidinyl]-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-
imidazolyl)methylpyrrolidinyl]methyloxobutanyl}carbamate
tert-Butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate was synthesized from 3-(2-bromoacetyl)-10,11-
dihydro-5H-dibenzo[c,g]chromen-8(9H)-one, by the same methods employed in the synthesis
of tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin-
2-yl}-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl](methoxymethyl)pyrrolidinecarboxylate, substituting (2S,5S)((S)
(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinecarboxylic acid for
(2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic acid and
(2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic acid for
)((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidine
carboxylic acid.
tert-Butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxymethyl)pyrrolidinecarboxylate was prepared according to the
method described for the synthesis of tert-butyl )[5-(2-{(2S,5S)[N-
(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate, substituting utyl )[9-(2-{(2S,5S)-
1-[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1H-imidazolyl)-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate for tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-
(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
xymethyl)pyrrolidinecarboxylate.
Methyl {(2S)[(2S,4S)(5-{2-[(2S,5S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate was prepared from tert-butyl
(2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1H-
imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate according to the same method described for the
synthesis of methyl (S)((2S,4S)(2'-((2S,4S)((2S,3R)methoxycarbonylamino
methoxybutanoyl)(methoxymethyl)pyrrolidinyl)-1H,1'H-7,7'-binaphtho[1,2-d]imidazol-
2-yl)methylpyrrolidinyl)methyloxobutanylcarbamate, substituting (2S,4S)-tert-
Butyl 2-(2'-((2S,4S)((S)(methoxycarbonylamino)methylbutanoyl)
methylpyrrolidinyl)-1H,1'H-7,7'-binaphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinecarboxylate with tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-
(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxymethyl)pyrrolidine
carboxylate. MS (ESI) m/z 866 [M + H]+. 1H NMR (400 MHz, cd 3od) δ 8.44 (d, J = 19.8 Hz,
1H), 8.02 (t, J = 8.6 Hz, 2H), 7.98 – 7.81 (m, 3H), 7.74 (dd, J = 22.2, 13.6 Hz, 2H), 7.63 –
7.41 (m, 2H), 5.79 (d, J = 6.0 Hz, 1H), 5.42 (dt, J = 43.3, 21.5 Hz, 2H), 5.31 – 5.10 (m, 5H),
4.85 – 4.70 (m, 1H), 4.52 (d, J = 3.8 Hz, 1H), 4.31 (t, J = 8.2 Hz, 1H), 4.17 (dd, J = 20.8, 8.8
Hz, 1H), 3.80 (dt, J = 19.0, 7.3 Hz, 2H), 3.73 – 3.63 (m, 7H), 3.63 – 3.49 (m, 3H), 3.39 (d, J
= 9.7 Hz, 4H), 3.35 (s, 5H), 3.28 (d, J = 4.4 Hz, 3H), 2.84 (d, J = 8.8 Hz, 1H), 2.72 (dd, J =
12.5, 6.6 Hz, 1H), 2.59 – 2.45 (m, 1H), 2.45 – 2.11 (m, 4H), 2.11 – 1.82 (m, 2H), 1.56 (d, J =
6.6 Hz, 3H), 1.35 – 1.21 (m, 1H), 1.22 – 1.12 (m, 4H), 1.10 – 1.01 (m, 2H), 0.99 (d, J = 6.6
Hz, 3H), 0.91 (d, J = 6.7 Hz, 3H).
Example ON
Methyl {(2S)[(2S,4S)(5-{2-[(2S,5S){(2S,3S)[(methoxycarbonyl)amino]-
3-methylpentanoyl}(methoxymethyl)yl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
pyrrolidinyl]methyloxobutanyl}carbamate was prepared according to the
method described for the synthesis of methyl {(2S,3S)[(2S,4S)(5-{2-[(2S,4S)
{(2S,3S)[(methoxycarbonyl)amino]methylpentanoyl}(methoxymethyl)pyrrolidin
yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxopentanyl}carbamate tuting tertbutyl
(2S,4S)[9-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1H-imidazol-
5-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate for tert-Butyl (2S,4S)[5-(2-{(2S,5S)[N-
(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate. MS (ESI) m/z 863 [M + H]+. 1H NMR (400
MHz, cd3od) δ 8.43 (d, J = 24.6 Hz, 1H), 8.01 (dt, J = 16.1, 8.0 Hz, 1H), 7.95 – 7.78 (m, 2H),
7.77 – 7.64 (m, 2H), 7.59 – 7.41 (m, 2H), 5.79 (d, J = 5.8 Hz, 1H), 5.39 (dt, J = 46.2, 23.1
Hz, 1H), 5.27 – 5.07 (m, 3H), 4.85 – 4.72 (m, 1H), 4.42 (t, J = 8.6 Hz, 1H), 4.31 (d, J = 7.9
Hz, 1H), 4.17 (dd, J = 19.7, 8.7 Hz, 1H), 3.81 (dd, J = 23.6, 13.3 Hz, 1H), 3.69 (d, J = 10.0
Hz, 5H), 3.60 (dd, J = 14.7, 7.8 Hz, 2H), 3.42 (s, 3H), 3.17 (d, J = 6.1 Hz, 1H), 3.07 (s, 1H),
2.99 – 2.91 (m, 1H), 2.85 (s, 1H), 2.73 (dd, J = 12.5, 6.4 Hz, 1H), 2.62 – 2.48 (m, 1H), 2.45 –
2.14 (m, 3H), 2.10 – 1.91 (m, 2H), 1.83 (s, 1H), 1.57 (d, J = 6.6 Hz, 3H), 1.44 (d, J = 7.4 Hz,
1H), 1.34 – 1.23 (m, 1H), 1.20 – 0.96 (m, 5H), 0.90 (dt, J = 14.8, 6.7 Hz, 9H).
Example OO
O 1. HCl/dioxane; DCM
H H N
N N N OMe 2. COMU, DIPEA, DMF
N N O
MeO2CHN O NHBoc
HO (R)(tertbutoxycarbonylamino
)
tert-butyl (2S,4S)[9-(2-{(2S)[N-(methoxycarbonyl)-L- Ph phenylacetic acid
valyl]pyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
BocHN
H O 1. HCl/dioxane; DCM
H N
N N N OMe
N N
MeO2CHN O
methyl {(2S)[(2S)(5-{2-[(2S,4S){(2R)[(tertbutoxycarbonyl
)amino]phenylacetyl}(methoxymethyl)pyrrolidinyl]-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-
imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate
H O H N
N N N OMe
N N
MeO2CHN O
methyl {(2S)[(2S)(5-{2-[(2S,4S)[(2R)aminophenylacetyl]
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate
Methyl {(2S)[(2S)(5-{2-[(2S,4S)[(2R)aminophenylacetyl]
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate was ed
according to the method bed for the sis of methyl (S)((2S,4S)(2'-((2S,4S)-
1-((R)aminophenylacetyl)(methoxymethyl)pyrrolidinyl)-1H,1'H-7,7'-
binaphtho[1,2-d]imidazolyl)methylpyrrolidinyl)methyloxobutan
ylcarbamate, substituting tert-butyl (2S,4S)[9-(2-{(2S)[N-(methoxycarbonyl)-L-
valyl]pyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxymethyl)pyrrolidinecarboxylate for )-tert-butyl 2-(2'-
((2S,4S)((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidinyl)-
1H,1'H-7,7'-binaphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidinecarboxylate.
MS (ESI) m/z 811 [M + H]+.
Example OP
Boc 1. HCl/dioxane; DCM
H O H N
N 2. COMU, DIPEA, DMF
N N
N O
O NHCO2Me
NHCO2Me
utyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-
(R)
L-valyl]methylpyrrolidinyl}-1H-imidazolyl)-1,4,5,11-
(methoxycarbonylamino)
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
phenylacetic acid
yl](methoxymethyl)pyrrolidinecarboxylate
MeO2CHN
O Ph
H O H N
N N
N N
methyl {(1R)[(2S,4S)(9-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]-
3-methylbutanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
Methyl {(1R)[(2S,4S)(9-{2-[(2S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidin-
1-yl]oxophenylethyl}carbamate was synthesized according to the protocol described for
the preparation of methyl {(1R)[(2S,4S)(5-{2-[(2S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate, substituting tert-butyl
(2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1H-
imidazolyl)-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
xymethyl)pyrrolidinecarboxylate for tert-butyl (2S,4S)[5-(2-{(2S)[N-
(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1,4,5,11
ydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate. MS (ESI) m/z 886 [M + H]+. 1H NMR (400
MHz, cd3od) δ 8.02 – 7.85 (m, 2H), 7.85 – 7.68 (m, 2H), 7.58 (d, J = 21.5 Hz, 1H), 7.55 –
7.35 (m, 4H), 7.31 (d, J = 13.6 Hz, 1H), 5.43 (d, J = 19.1 Hz, 1H), 5.28 (t, J = 8.3 Hz, 1H),
5.25 – 5.10 (m, 3H), 4.13 (t, J = 9.5 Hz, 1H), 3.93 – 3.54 (m, 7H), 3.42 (qd, J = 9.5, 5.5 Hz,
2H), 3.34 (d, J = 7.9 Hz, 1H), 3.28 (s, 3H), 3.19 (t, J = 7.8 Hz, 2H), 3.00 (t, J = 7.8 Hz, 2H),
2.74 – 2.46 (m, 3H), 2.44 – 2.15 (m, 2H), 2.12 – 1.86 (m, 2H), 1.56 (d, J = 6.7 Hz, 2H), 1.29
(d, J = 6.3 Hz, 1H), 1.15 – 1.01 (m, 1H), 0.98 (d, J = 6.7 Hz, 2H), 0.88 (d, J = 6.8 Hz, 2H).
e OQ
OEt OEt
H H O
N Pd(dba)2
N O N N
Cl B
N (pinB)2
O O N
O O
HN O
O O
methyl 1-[(2S,4S)(9-chloro-1,11- methyl [(2S){(2S,4S)ethoxy[9-(4,4,5,5-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl) tetramethyl-1,3,2-dioxaborolanyl)-1,11-
ethoxypyrrolidinyl]methyloxobutanyl}carbamate dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}methyloxobutanyl]carbamate
Pd(PPh3)4 N N N
PdCl2(dppf) Boc
N N N
DME H
H O
tert-butyl (2S)[5-(2-{(2S,4S)ethoxy[N-(methoxycarbonyl)-L-O
valyl]pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]pyrrolidinecarboxylate
NH H H
1) HCl O O
N N N
2) HATU N N N
Moc- Val H O
H O
methyl {(2S)[(2S)(5-{2-[(2S,4S)ethoxy{(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate
(2S,4S)Tert-butyl 2-(3-chlorooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl) 4-ethoxypyrrolidine-1,2-dicarboxylate
To a slurry of 9-bromochloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
(2.50 g, 6.8 mmol) in MeCN (20 mL) was added (2S,4S)(tert-butoxycarbonyl)
ethoxypyrrolidinecarboxylic acid (2.68 g, 10.3 mmol) and DIPEA (1.3 mL, 7.5 mmol).
The reaction was heated with stirring to 50 °C for 18 h. The reaction was then cooled to
room temperature and diluted with EtOAc. The solution was washed with HCl (1N) and
brine. The aqueous layers were backextracted with EtOAc and the ing organic layers
were combined, dried (Na2SO4) and concentrated under reduced pressure. The crude residue
was purified by silica column chromatography (15% to 50 % Hexanes) to afford
(2S,4S)tert-butyl 2-(3-chlorooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
4-ethoxypyrrolidine-1,2-dicarboxylate (2.08 g, 56%).
Tert-butyl (2S,4S)(9-chloro-1,4,5,11-tetrahydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)ethoxypyrrolidinecarboxylate
To a solution of (2S,4S)tert-butyl 2-(3-chlorooxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl) 4-ethoxypyrrolidine-1,2-dicarboxylate (2.08 g, 3.8 mmol) in a
mixture of toluene (30 mL) and methoxyethanol (4 mL) was added ammonium acetate (2.90
g, 37.7 mmol). The solution was heated with stirring to 80 °C for 18 h. The reaction was
then cooled to room temperature and diluted with EtOAc. The solution was washed with
brine, and the resulting aqueous layer was backextracted with EtOAc. The ing organic
layers were combined, dried (Na2SO4), and concentrated under reduced pressure. The crude
residue was purified by silica column chromatography (10% to 75 % EtOAc(w/5%
MeOH)/Hexanes) to afford tert-butyl (2S,4S)(9-chloro-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)ethoxypyrrolidine
carboxylate (0.99 g, 50%).
Tert-butyl (2S,4S)(9-chloro-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)ethoxypyrrolidinecarboxylate
To a solution of (2S,4S)(9-chloro-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)ethoxypyrrolidine
carboxylate (0.99 g, 1.9 mmol) in CH2Cl2 (18 mL) was added MnO2 (4.52 g, 52.0 mmol).
The resulting slurry was stirred at room temperature for 18 h. The reaction was filtered
through , washed with CH2Cl2, and concentrated under reduced pressure. The crude
e was purified by silica column chromatography (10% to 75 % EtOAc(w/5%
MeOH)/Hexanes) to afford tert-butyl )(9-chloro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)ethoxypyrrolidine
carboxylate (0.71 g, 72%)
Methyl {(2S)[(2S,4S)(9-chloro-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)ethoxypyrrolidinyl]methyloxobutanyl}carbamate
To a solution of tert-butyl (2S,4S)(9-chloro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)ethoxypyrrolidine
carboxylate (0.46 g, 0.9 mmol) in a mixture of CH2Cl2 (9.0 mL) and MeOH (1.5 mL) was
added HCl (in dioxanes, 4M, 6.5 mL, 26.0 mmol). The resulting solution was stirred at room
temperature for 2 h. The on was trated to dryness under reduced re. To
the crude intermediate in CH2Cl2 (10.0 mL) was added (methoxycarbonylamino)
methylbutanoic acid (0.17 g, 0.9 mmol), HATU (0.41 g, 1.1 mmol), and DIPEA (0.5 mL, 2.9
mmol). The resulting on was stirred at room temperature for 48 h and diluted with
CH2Cl2. The solution was washed with aqueous HCl (1N) and brine. The aqueous layers
were backextracted with CH2Cl2 (2x). The resulting organic layers were combined, dried
(Na2SO4), and concentrated under reduced pressure. The crude residue was purified by silica
column chromatography (20% to 100 % EtOAc(w/5% MeOH)/Hexanes to 80%
MeOH/EtOAc) to afford methyl {(2S)[(2S,4S)(9-chloro-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)ethoxypyrrolidinyl]
methyloxobutanyl}carbamate (0.46 g, 90%).
Methyl [(2S){(2S,4S)ethoxy[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-
ihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}
methyloxobutanyl]carbamate
To a solution of methyl {(2S)[(2S,4S)(9-chloro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)ethoxypyrrolidinyl]
methyloxobutanyl}carbamate (0.46 g, 0.84 mmol) in dioxane (8.5 mL) was added
4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(1,3,2-dioxaborolane) (0.32 g, 1.3 mmol), potassium
acetate (0.25 g, 2.5 mmol), bis(dibenzylideneacetone)palladium (0.032 g, 0.035 mmol), and
2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (Xphos, 0.032 g, 0.067 mmol). The
resulting solution was degassed with argon for 5 min and heated, with stirring, to 90 °C for 6
h. The reaction was cooled to room temperature, diluted with EtOAc, and filtered through
celite. The crude residue was purified by silica column chromatography (20% to 100 %
EtOAc(w/5% MeOH)/Hexanes to 90% MeOH/EtOAc) to afford methyl [(2S){(2S,4S)
[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}methyl
anyl]carbamate (0.41 g, 73%).
Tert-butyl (2S)[5-(2-{(2S,4S)ethoxy[N-(methoxycarbonyl)-L-valyl]pyrrolidin
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl]pyrrolidinecarboxylate
To a solution of methyl 1-{(2S,4S)ethoxy[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}methyloxobutanyl]carbamate (0.41 g, 0.61 mmol) in a mixture of
DME (6.1 mL) and DMF (1.0 mL) was added (S)-tert-butyl 2-(5-bromo-1H-imidazol
yl)pyrrolidinecarboxylate (0.39 g, 1.2 mmol), tetrakis(triphenylphosphine)palladium
(0.021 g, 0.018 mmol), bis(diphenylphosphino)ferrocene]dichloropalladium (0.030 g,
0.041 mmol), and aqueous ium carbonate (2M, 1.0 mL, 2.0 mmol). The solution was
degassed with argon for 5 min and heated, with stirring, to 85 °C for 6 h. The solution was
cooled to room temperature and diluted with EtOAc. The organic layer was washed with
water and brine. The aqueous layers were backextracted with EtOAc (3x). The combined
organic layers were dried over Na2SO4 and concentrated under reduced pressure. The crude
e was purified by silica column chromatography (20% to 100 % EtOAc(w/5%
MeOH)/Hexanes to 80% MeOH/EtOAc) to afford tert-butyl (2S)[5-(2-{(2S,4S)ethoxy-
methoxycarbonyl)-L-valyl]pyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate (0.16 g, 33%).
Methyl {(2S)[(2S)(5-{2-[(2S,4S)ethoxy{(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate
To a solution of tert-butyl (2S)[5-(2-{(2S,4S)ethoxy[N-(methoxycarbonyl)-
L-valyl]pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
dazolyl]pyrrolidinecarboxylate (0.048 g, 0.062 mmol) in a mixture of CH2Cl2
(1.0 mL) and MeOH (0.25 mL) was added HCl (in dioxanes, 4M, 0.47 mL, 1.9 mmol). The
solution was stirred at room ature for 3 h, and then concentrated to dryness under
reduced pressure. To the crude intermediate suspended in CH2Cl2 (1.5 mL) was added (S)
(methoxycarbonylamino)methylbutanoic acid (0.012 g, 0.069 mmol), HATU (0.029 g,
0.076 mmol), and DIPEA (0.050 mL, 0.28 mmol). The resulting solution was stirred at room
temperature for 1.5 h. The reaction was diluted with DMF and s LiOH (2.5 M, 4
drops) was added. The solution was concentrated to remove the CH2Cl2 and the crude
residue was purified by preparative reverse phase HPLC (10% to 52 % MeCN/water with
0.1% TFA). The desired fractions were combined and concentrated under reduced pressure
to remove volatile organics. The addition of s sodium bicarbonate with stirring
resulted in precipitation of a white solid. The precipitate was filtered through a membrane
filter and washed with water. Drying under reduced pressure afforded methyl {(2S)[(2S)-
2-(5-{2-[(2S,4S)ethoxy{(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)pyrrolidinyl]methyloxobutanyl}carbamate (0.008 g,
17%). 1H-NMR: 400 MHz, (MeOD) δ: (Mixture of rs) 8.37 (s, 1H), 7.97 (s, 2H),
7.37-7.76 (m, 5H), 5.38-5.54 (m, 1H), 5.18 (s, 2H), 5.14-5.16 (m, 1H), 4.21-4.31 (m, 4H),
3.87-4.09 (m, 1H), 3.79-3.85 (m, 2H), 3.66 (s, 3H), 3.64 (s, 3H), .55 (m, 2H), 2.30-
2.35 (m, 3H), 2.04-2.06 (m, 3H), 1.11 (m, 2H), 0.95 (d, 3H), 0.88 (d, 3H). MS (ESI) m/z
836.02 [M + H]+.
Example OR
1) HCl
N N N
N N N 2) COMU
H O
H O Moc- Phg
tert-butyl (2S)[5-(2-{(2S,4S)ethoxy[N-(methoxycarbonyl)-L-
valyl]pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]pyrrolidinecarboxylate
NH H H
O O
N N N
N N N
H O
H O
methyl {(1R)[(2S)(5-{2-[(2S,4S)ethoxy{(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-
imidazolyl)pyrrolidinyl]oxophenylethyl}carbamate
Methyl {(1R)[(2S)(5-{2-[(2S,4S)ethoxy{(2S)[(methoxycarbonyl)amino]
butanoyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)pyrrolidinyl]oxophenylethyl}carbamate
To a solution of tert-butyl (2S)[5-(2-{(2S,4S)ethoxy[N-(methoxycarbonyl)-
l]pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
1H-imidazolyl]pyrrolidinecarboxylate (0.11 g, 0.14 mmol) in a mixture of CH2Cl2 (2.0
mL) and MeOH (0.5 mL) was added HCl (in dioxanes, 4M, 1.0 mL, 4.0 mmol). The solution
was stirred at room temperature for 3 h, and then concentrated to dryness under reduced
re. To the crude intermediate suspended in CH2Cl2 (1.5 mL) was added (R)
(methoxycarbonylamino)phenylacetic acid (0.044 g, 0.21 mmol) and DIPEA (0.075 mL,
0.43 mmol). The resulting solution was cooled to -40 °C and COMU (0.096 g, 0.22 mmol)
was added. The on was allowed to slowly warm to 0 °C over 1 h. The reaction was
diluted with DMF. The solution was concentrated to remove the CH2Cl2 and the crude
residue was purified by preparative reverse phase HPLC (10% to 55% MeCN/water with
0.1% TFA). The desired fractions were combined and concentrated under reduced re
to remove volatile organics. The addition of aqueous sodium bicarbonate with stirring
resulted in precipitation of a white solid. The precipitate was filtered through a membrane
filter and washed with water. Drying under reduced pressure afforded methyl 2-[(2S)-
2-(5-{2-[(2S,4S)ethoxy{(2S)[(methoxycarbonyl)amino]
butanoyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)pyrrolidinyl]oxophenylethyl}carbamate (0.022 g, 18%).
1H-NMR: 400 MHz, (MeOD) δ: re of rotamers) 8.28 (d, 1H), 7.88 (d, 1H), 7.52-7.70
(m, 3H), 7.28-7.38 (m, 5H), .96 (m, 2H), 5.44-5.47 (m, 1H), 5.31 (s, 1H), 5.12 (s, 2H),
4.16-4.48 (m, 3H), 3.81-3.19 (m, 1H), 3.62-3.76 (m, 2H), 3.58 (s, 3H), 2.56 (s, 3H), 2.42-
2.57 (m, 1H), 2.31 (m, 1H), 1.81-2.41 (m, 5H), 1.04 (t, 3H), 0.87 (d, 3H), 0.81 (d, 3H). MS
(ESI) m/z 869.55 [M + H]+.
e OS
Boc Br 1) HCl NH
N N O N
H Br
H 2) HATU
Moc-MeThr N
O H
(S)-tert-butyl 2-(5-bromo-1H-imidazol
yl)pyrrolidinecarboxylate methyl (2S,3R)((S)(5-bromo-1H-
imidazolyl)pyrrolidinyl)methoxy-
1-oxobutanylcarbamate
Methyl (2S,3R)((S)(5-bromo-1H-imidazolyl)pyrrolidinyl)methoxy
oxobutanylcarbamate
To a solution of (S)-tert-butyl 2-(5-bromo-1H-imidazolyl)pyrrolidine
carboxylate (1.00 g, 3.2 mmol) in a e of CH2Cl2 (30 mL) and MeOH (5 mL) was added
HCl (in e, 4 M, 11.5 mL, 46.0 mmol). The solution was stirred at 40 °C for 1h, cooled
to room temperature, and concentrated to dryness under reduced pressure. To the crude
intermediate suspended in CH2Cl2 (30 mL) was added (2S,3R)methoxy
(methoxycarbonylamino)butanoic acid (0.67 g, 3.5 mmol), HATU (1.47 g, 3.8 mmol), and
DIPEA (1.00 mL, 6.0 mmol). The resulting solution was stirred at room temperature for 24
h. DMF (2 mL) and aqueous LiOH (2.5 M, 1 mL) were added and the reaction was
concentrated to dryness under reduced pressure. The crude material was diluted with EtOAc
and washed with H2O and brine. The aqueous layers were backextracted with EtOAc. The
combined organic layers were dried over Na2SO4 and concentrated under reduced pressure.
The crude residue was purified by silica column chromatography (20% to 100 %
EtOAc(w/5% MeOH)/CH2Cl2) to afford methyl (2S,3R)((S)(5-bromo-1H-imidazol
yl)pyrrolidinyl)methoxyoxobutanylcarbamate (1.2g, 100%).
Example OT
Tert-butyl (2S,4S)[9-(2-{(2S)[N-(methoxycarbonyl)-O-methyl-L-
threonyl]pyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
To a solution of tert-butyl 4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]-naphtho[1,2-d]imidazol
yl]pyrrolidinecarboxylate (1.0 g, 3.2 mmol) in a e of DMSO (2.0 mL) and dioxanes
(2.0 mL) was added methyl (2S,3R)((S)(5-bromo-1H-imidazolyl)pyrrolidinyl)
methoxyoxobutanylcarbamate (0.24 g, 0.62 mmol),
tetrakis(triphenylphosphine)palladium (0.050 g, 0.043 mmol), [1,1′-
bis(diphenylphosphino)ferrocene]dichloropalladium (0.030 g, 0.041 mmol), and aqueous
potassium ate (2M, 0.65 mL, 1.3 mmol). The solution was degassed with argon for 5
min and heated, with stirring, to 85 °C for 6 h. The solution was cooled to room temperature
and diluted with EtOAc. The organic layer was washed with water and brine. The aqueous
layers were backextracted with EtOAc (3x). The combined organic layers were dried over
Na2SO4 and trated under reduced pressure. The crude residue was ed by silica
column chromatography (20% to 100 % EtOAc(w/5% MeOH)/Hexanes to 60%
MeOH/EtOAc) to afford tert-butyl (2S,4S)[9-(2-{(2S)[N-(methoxycarbonyl)-O-methyl-
L-threonyl]pyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxymethyl)pyrrolidine
carboxylate (0.20 g, 63%).
Methyl {(1R)[(2S,4S)(9-{2-[(2S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
To a solution of tert-butyl (2S,4S)[9-(2-{(2S)[N-(methoxycarbonyl)-O-methyl-
L-threonyl]pyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxymethyl)pyrrolidine
carboxylate (0.20 g, 0.26 mmol) in a mixture of CH2Cl2 (3.0 mL) and MeOH (0.5 mL) was
added HCl (in dioxanes, 4M, 2.0 mL, 8.0 mmol). The solution was stirred at 40 ºC for 1 h,
and then cooled to room temperature and concentrated to dryness under reduced pressure. To
the crude ediate suspended in CH2Cl2 (3.0 mL) was added (R)
(methoxycarbonylamino)phenylacetic acid (0.081 g, 0.39 mmol) and DIPEA (0.150 mL,
0.86 mmol). The resulting solution was cooled to -40 °C and COMU (0.180 g, 0.42 mmol)
was added. The reaction was d to slowly warm to room temperature over 30 min and
ined for 1.5 h. The solution was diluted with CH2Cl2 and washed with aqueous
bicarbonate. The aqueous layer was backextracted with CH2Cl2. The combined c
layers were dried over Na2SO4 and concentrated under reduced pressure. The crude residue
was purified by preparative reverse phase HPLC (10% to 50% MeCN/water with 0.1% TFA).
The desired fractions were combined and concentrated under reduced pressure to remove
volatile organics. The addition of aqueous sodium bicarbonate with stirring resulted in
itation of a white solid. The precipitate was filtered through a membrane filter and
washed with water. Drying under reduced pressure afforded methyl 2-[(2S,4S)(9-
{2-[(2S){(2S,3R)methoxy[(methoxycarbonyl)amino]butanoyl}pyrrolidinyl]-1H-
imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate (0.10 g, 46%). 1H-NMR:
400 MHz, (MeOD) δ: (Mixture of rotamers) 8.34 (s, 1H), 7.92-7.97 (m, 2H), 7.33-7.69 (m,
10H), 5.53 (s, 1H), 5.36-5.39 (m, 1H), 5.15-5.21 (m, 3H), 4.44 (d, 1H), .93 (m, 2H),
3.68-3.75 (m, 2H), 3.66 (s, 3H), 3.65 (s, 3H), 3.46-3.57 (m, 2H), 3.28 (s, 3H), 3.19 (s, 3H),
2.47-2.60 (m, 3H), 2.22-2.36 (m, 4H), 1.99-2.08 (m, 3H), 1.15 (d, 3H). MS (ESI) m/z 886.19
[M + H]+.
Example OU
H H 1) HCl
O N N
B Boc 2) HATU
O N Moc-MeThr
tert-butyl 4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinecarboxylate
Boc I
O N N
O H
O N O
O N
O O
methyl (1-{4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinyl}methoxyoxobutan
yl)carbamate
H H 1) HCl
N N O
Boc 2) COMU
N N N
O Moc- Phg
H O
tert-butyl (2S)(5-{2-[(2S,4S)[N-(methoxycarbonyl)-O-methyl-L-threonyl]
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
azolyl}-1H-imidazolyl)pyrrolidinecarboxylate
NH H H
O O
N N O
N N N
H O
H O
methyl {(1R)[(2S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]methoxybutanoyl}
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-
imidazolyl)pyrrolidinyl]oxophenylethyl}carbamate
Methyl (methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}methoxy-
1-oxobutanyl)carbamate
To a solution of tert-butyl 4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinecarboxylate (0.25 g, 0.41 mmol) in a e of CH2Cl2 (4.0 mL) and MeOH
(1.0 mL) was added HCl (in dioxanes, 4M, 3.0 mL, 12.0 mmol). The resulting solution was
d at 40 ºC for 45 min. The solution was cooled to room temperature and concentrated to
dryness under reduced pressure. To the crude intermediate in CH2Cl2 (4.0 mL) was added
(2S,3R)methoxy(methoxycarbonylamino)butanoic acid (0.08 g, 0.42 mmol), HATU
(0.17 g, 0.45 mmol), and DIPEA (0.4 mL, 2.3 mmol). The resulting solution was stirred at
room temperature for 48 h and diluted with CH2Cl2. The solution was washed with brine.
The aqueous layer was backextracted with CH2Cl2 (2x). The resulting organic layers were
combined, dried 4), and concentrated under d pressure. The crude residue was
purified by silica column chromatography (30% to 100 % EtOAc(w/5% MeOH)/Hexanes to
80% MeOH/EtOAc) to afford methyl (1-{4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}methoxyoxobutanyl)carbamate (0.24 g, 92%).
Tert-butyl (2S)(5-{2-[(2S,4S)[N-(methoxycarbonyl)-O-methyl-L-threonyl]
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)pyrrolidinecarboxylate
To a solution of methyl (1-{4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}methoxyoxobutanyl)carbamate (0.15 g, 0.22 mmol) in a e
of DMSO (2.0 mL) and dioxane (2.0 mL) was added (S)-tert-butyl odo-1H-imidazol
yl)pyrrolidinecarboxylate (0.15 g, 0.40 mmol), tetrakis(triphenylphosphine)palladium
(0.028 g, 0.024 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (0.018 g,
0.025 mmol), and aqueous potassium carbonate (2M, 0.35 mL, 0.70 mmol). The solution
was degassed with argon for 5 min and heated, with ng, to 90 °C for 6 h. The solution
was cooled to room temperature and d with EtOAc. The organic layer was washed with
water and brine. The aqueous layers were tracted with EtOAc (3x). The combined
organic layers were dried over Na2SO4 and concentrated under reduced pressure. The crude
residue was purified by preparative reverse phase HPLC (10% to 55% MeCN/water with
0.1% TFA). The desired fractions were combined and concentrated under reduced pressure
to remove volatile organics. The remaining solution was basified with aqueous bicarbonate
and extracted with CH2Cl2 (3x). The combined organic layers were dried over Na2SO4 and
concentrated under reduced pressure to provide tert-butyl (2S)(5-{2-[(2S,4S)[N-
(methoxycarbonyl)-O-methyl-L-threonyl](methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidine
carboxylate (0.013 g, 7%).
Methyl {(1R)[(2S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methoxybutanoyl}(methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinyl]oxophenylethyl}carbamate
To a solution of tert-butyl (2S)(5-{2-[(2S,4S)[N-(methoxycarbonyl)-O-methyl-
L-threonyl](methoxymethyl)pyrrolidinyl]-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidine
carboxylate (0.013 g, 0.016 mmol) in a mixture of CH2Cl2 (0.5 mL) and MeOH (0.02 mL)
was added HCl (in dioxanes, 4M, 0.20 mL, 0.80 mmol). The on was d at room
temperature for 1 h, and then concentrated to dryness under reduced pressure. To the crude
intermediate ded in CH2Cl2 (0.5 mL) was added (R)(methoxycarbonylamino)
acetic acid (0.006 g, 0.029 mmol) and DIPEA (0.05 mL, 0.28 mmol). The resulting
solution was cooled to 0 °C and COMU (0.012 g, 0.028 mmol) was added. The reaction was
stirred at 0 °C for 30 min. The solution was diluted with DMF and aqueous LiOH (2.5 M, 2
drops) and concentrated under reduced pressure to remove the CH2Cl2. The crude residue
was purified by preparative reverse phase HPLC (10% to 55% MeCN/water with 0.1% TFA).
The desired fractions were combined and concentrated under reduced pressure to remove
volatile organics. The addition of aqueous sodium bicarbonate with stirring resulted in
precipitation of a white solid. The precipitate was filtered through a membrane filter and
washed with water. Drying under reduced pressure afforded methyl {(1R)[(2S)(5-{2-
S){(2S)[(methoxycarbonyl)amino]methoxybutanoyl}
(methoxymethyl)pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)pyrrolidinyl]oxophenylethyl}carbamate (0.008 g, 61%). 1H-
NMR: 400 MHz, (MeOD) δ: (Mixture of rotamers) 8.37 (m, 1H), 7.96-7.98 (m, 2H), 7.60-
7.79 (m, 3H), 7.35-7.52 (m, 6H), 6.98-7.03 (m, 1H), 5.52 (s, 1H), 5.26-5.39 (m, 2H), 5.20 (s,
2H), 4.44 (m, 1H), 4.27 (m, 1H), 3.64 (s, 6H), 3.50-3.57 (m, 3H), 3.37 (s, 3H), 3.29-3.44 (m,
3H), 3.20 (s, 3H), 2.68-2.72 (m, 2H), 2.57-2.62 (m, 2H), 1.89-2.15 (m, 6H), 1.18 (d, 3H).
MS (ESI) m/z 885.73 [M + H]+.
Example OV
Boc I
N N
H H (2S,4S)-tert-butyl 2-(5-iodo-1H-imidazolyl)
O xymethyl)pyrrolidinecarboxylate
N N
O N Pd(PPh3)4
O O PdCl2(dppf)
DME, DMF
methyl [(2S){(2S,4S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]-
2-azabicyclo[3.1.0]hexyl}methyloxobutanyl]carbamate
N N N 1) HCl
N N N
H O O 2) COMU
H HN Moc- Phg
tert-butyl (2S,4S)[5-(2-{(1S,3S,5S)[N-(methoxycarbonyl)-L-valyl]
azabicyclo[3.1.0]hexyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate
NH H H
O O
N N N
N N N
H O
H O
methyl {(1R)[(2S,4S)(5-{2-[(1S,3S,5S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}azabicyclo[3.1.0]hexyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
Methyl [(2S){(2S,4S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]azabicyclo[3.1.0]hex
methyloxobutanyl]carbamate
Methyl [(2S){(2S,4S)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]azabicyclo[3.1.0]hexyl}
methyloxobutanyl]carbamate was prepared following the procedure for methyl [(2S)
{(2S,4S)ethoxy[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}methyl
anyl]carbamate by substitution of (1S,3S,5S)(tert-butoxycarbonyl)
azabicyclo[3.1.0]hexanecarboxylic acid for (2S,4S)(tert-butoxycarbonyl)
ethoxypyrrolidinecarboxylic acid.
Tert-butyl (2S,4S)[5-(2-{(1S,3S,5S)[N-(methoxycarbonyl)-L-valyl]
azabicyclo[3.1.0]hexyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate
To a solution of methyl 1-{(2S,4S)[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
azabicyclo[3.1.0]hexyl}methyloxobutanyl]carbamate (0.19 g, 0.30 mmol) in a
mixture of DMSO (2.0 mL) and dioxane (2.0 mL) was added (2S,4S)-tert-butyl 2-(5-iodo-
dazolyl)(methoxymethyl)pyrrolidinecarboxylate (0.20 g, 0.55 mmol),
tetrakis(triphenylphosphine)palladium (0.035 g, 0.030 mmol), [1,1′-
bis(diphenylphosphino)ferrocene]dichloropalladium (0.025 g, 0.034 mmol), and aqueous
potassium carbonate (2M, 0.5 mL, 1.0 mmol). The solution was degassed with argon for 5
min and heated, with stirring, to 90 °C for 6 h. The solution was cooled to room temperature,
diluted with EtOAc, and filtered through . The filtrate was trated under reduced
pressure and purified by silica column chromatography (2% to 25 % CH2Cl2/MeOH) and
preparative reverse phase HPLC (10% to 55% MeCN/water with 0.1% TFA). The desired
fractions were combined and concentrated under reduced pressure to remove volatile
organics. The aqueous layer was ed with aqueous sodium bicarbonate and extracted
with CH2Cl2 (3x). The organic layers were combine, dried over Na2SO4, and concentrated
under reduced pressure to afford tert-butyl (2S,4S)[5-(2-{(1S,3S,5S)[N-
(methoxycarbonyl)-L-valyl]azabicyclo[3.1.0]hexyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate (0.025 g, 11%).
Methyl {(1R)[(2S,4S)(5-{2-[(1S,3S,5S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}azabicyclo[3.1.0]hexyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
xymethyl)pyrrolidinyl]oxophenylethyl}carbamate
To a solution of tert-butyl (2S,4S)[5-(2-{(1S,3S,5S)[N-(methoxycarbonyl)-L-
valyl]azabicyclo[3.1.0]hexyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate (0.025 g,
0.032 mmol) in a mixture of CH2Cl2 (1.0 mL) and MeOH (0.25 mL) was added HCl (in
dioxanes, 4M, 0.50 mL, 2.0 mmol). The solution was stirred at room temperature for 12 h,
and then trated to dryness under reduced pressure. To the crude intermediate
suspended in CH2Cl2 (0.5 mL) was added (R)(methoxycarbonylamino)phenylacetic
acid (0.012 g, 0.057 mmol) and DIPEA (0.05 mL, 0.28 mmol). The resulting solution was
cooled to 0 °C and COMU (0.023 g, 0.054 mmol) was added. The reaction was stirred at 0
°C for 30 min. The solution was diluted with DMF and aqueous LiOH (2.5 M, 2 drops) and
concentrated under reduced pressure to remove the CH2Cl2. The crude residue was purified
by preparative reverse phase HPLC (10% to 55% MeCN/water with 0.1% TFA). The desired
fractions were combined and concentrated under d pressure to remove volatile
organics. The addition of aqueous sodium bicarbonate with stirring resulted in precipitation
of a white solid. The precipitate was filtered through a membrane filter and washed with
water. Drying under reduced pressure ed methyl 2-[(2S,4S)(5-{2-
[(1S,3S,5S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}
yclo[3.1.0]hexyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-
1H-imidazolyl)(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
(0.015 g, 55%). 1H-NMR: 400 MHz, (MeOD) δ: (Mixture of rotamers) 8.35 (m, 1H), 7.94-
7.96 (m, 2H), 7.54-7.78 (m, 6H), 6.93-7.00 (m, 1H), 5.72 (m, 1H), 5.46 (s, 1H), 5.19 (s, 2H),
.16 (m, 1H), 3.95 (m, 1H), 3.67 (s, 3H), 3.63 (s, 3H), 3.42-3.49 (m, 2H), 3.24 (s, 3H),
2.67-2.78 (m, 2H), 2.41-2.62 (m, 3H), 2.01-2.13 (m, 2H), 1.86-1.99 (m, 3H), 0.99-1.03 (m,
2H), 0.90 (d, 3H). MS (ESI) m/z 882.23 [M + H]+.
Example OW
O O
N N
O methyl (2S,3S)((2S,5S)(5-iodo-1H-
imidazolyl)methylpyrrolidinyl)
H H oxopentanylcarbamate
O N N
B Boc Pd(PPh3)4
O N
PdCl2(dppf)
DME, DMF
methyl (1-{4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
rolidinyl}methyloxobutanyl)carbamate
O 1) HCl
NH H H
O O
N N N 2) COMU
Boc Moc- Phg
N N N
tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-isoleucyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxymethyl)pyrrolidinecarboxylate
NH H H
O O
N N N
N N N
H O
H O
methyl {(1R)[(2S,4S)(9-{2-[(2S,5S){(2S,3S)[(methoxycarbonyl)amino]
methylpentanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
utyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-isoleucyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
To a solution of methyl (1-{4-(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}methyloxobutanyl)carbamate (0.47 g, 0.78 mmol) in a mixture of
DMSO (4.0 mL) and dioxane (4.0 mL) was added methyl (2S,3S)((2S,5S)(5-iodo-1H-
imidazolyl)methylpyrrolidinyl)methyloxopentanylcarbamate (0.26 g, 0.72
mmol), tetrakis(triphenylphosphine)palladium (0.090 g, 0.078 mmol), [1,1′-
bis(diphenylphosphino)ferrocene]dichloropalladium (0.061g, 0.083 mmol), and aqueous
potassium carbonate (2M, 1.2 mL, 2.4 mmol). The solution was degassed with argon for 5
min and heated, with stirring, to 90 °C for 6 h. The on was cooled to room ature,
diluted with EtOAc, and filtered through celite. The te was concentrated under reduced
pressure and diluted with EtOAc. The organic solution was washed with water and brine and
the s layers were backextracted with EtOAc. The combined organic layers were dried
over Na2SO4 and concentrated under reduced re. The crude residue was purified by
silica column chromatography (10% to 100% EtOAc (5% MeOH)/CH2Cl2) to afford tertbutyl
(2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-isoleucyl]methylpyrrolidin
yl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate (0.25 g, 40%).
Methyl {(1R)[(2S,4S)(9-{2-[(2S,5S){(2S,3S)[(methoxycarbonyl)amino]
methylpentanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
To a solution of utyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
cyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxymethyl)pyrrolidine
carboxylate (0.175 g, 0.21 mmol) in a e of CH2Cl2 (2.0 mL) and MeOH (0.5 mL) was
added HCl (in dioxanes, 4M, 1.6 mL, 6.4 mmol). The solution was stirred at 40 ºC for 1 h,
cooled to room temperature, and then concentrated to dryness under reduced pressure. To the
crude intermediate suspended in CH2Cl2 (3.0 mL) was added (R)
(methoxycarbonylamino)phenylacetic acid (0.070 g, 0.34 mmol) and DIPEA (0.15 mL,
0.86 mmol). The resulting solution was cooled to -40 °C and COMU (0.15 g, 0.35 mmol)
was added. The reaction was warmed to room temperature over 30 min and diluted with
CH2Cl2. The solution was washed with saturated aqueous sodium bicarbonate. The aqueous
layer was backextracted with CH2Cl2, and the combined organic layers were dried over
Na2SO4 and concentrated under reduced pressure. The crude residue was purified by
preparative reverse phase HPLC (10% to 58% MeCN/water with 0.1% TFA). The desired
fractions were combined and concentrated under reduced re to remove volatile
organics. The addition of s sodium bicarbonate with stirring resulted in precipitation
of a white solid. The precipitate was filtered through a membrane filter and washed with
water. Drying under reduced pressure afforded methyl {(1R)[(2S,4S)(9-{2-[(2S,5S)
{(2S,3S)[(methoxycarbonyl)amino]methylpentanoyl}methylpyrrolidinyl]-1H-
imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate (0.079 g, 41%). 1H-NMR:
400 MHz, (MeOD) δ: (Mixture of rs) 8.36 (m, 1H), 7.93-7.98 (m, 2H), 7.66-7.84 (m,
3H), .48 (m, 7H), 5.53 (s, 1H), .39 (m, 1H), 5.17 (d, 2H), 5.08 (m, 1H), 4.14-
4.35 (m, 1H), 3.74 (m, 4H), 3.64 (s, 3H), 3.62 (s, 3H), 3.46 (m, 1H), 3.19 (s, 3H), 2.76 (m,
1H), 2.46-2.60 (m, 3H), .35 (m, 1H), 2.08-2.18 (m, 2H), 1.91 (m, 1H), 1.61-1.87 (m,
2H), 1.48 (d, 3H), 1.13-1.21 (m, 3H), 0.80-0.97 (m, 3H). MS (ESI) m/z 898.24 [M + H]+.
Example OX
NH H H 1) HCl
O O
N N N
Boc 2) HATU
N N N Moc-Val
tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-isoleucyl]
pyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxymethyl)pyrrolidinecarboxylate
NH H H
O O
N N N
N N N
H O
H O
methyl {(2S)[(2S,4S)(9-{2-[(2S,5S){(2S,3S)[(methoxycarbonyl)amino]methylpentanoyl}
methylpyrrolidinyl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
Methyl {(2S)[(2S,4S)(9-{2-[(2S,5S){(2S,3S)[(methoxycarbonyl)amino]
methylpentanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
To a solution of tert-butyl (2S,4S)[9-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
isoleucyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxymethyl)pyrrolidine
carboxylate (0.075 g, 0.09 mmol) in a mixture of CH2Cl2 (1.0 mL) and MeOH (0.25 mL) was
added HCl (in dioxanes, 4M, 0.7 mL, 2.8 mmol). The solution was stirred at 40 ºC for 1 h,
cooled to room temperature, and then concentrated to dryness under reduced pressure. To the
crude intermediate suspended in CH2Cl2 (3.0 mL) was added (S)(methoxycarbonylamino)-
3-methylbutanoic acid (0.020 g, 0.14 mmol), HATU (0.043 g, 0.11 mmol) and DIPEA (0.10
mL, 0.57 mmol). The reaction was stirred at room temperature for 2 h. The reaction was
diluted with DMF and aqueous LiOH (2.5 M, 3 drops) and the CH2Cl2 was removed under
reduced re. The crude e was purified by preparative reverse phase HPLC (10%
to 58% MeCN/water with 0.1% TFA). The desired fractions were combined and
concentrated under reduced pressure to remove volatile organics. The addition of aqueous
sodium bicarbonate with stirring resulted in itation of a white solid. The precipitate
was filtered h a membrane filter and washed with water. Drying under reduced
pressure afforded methyl {(2S)[(2S,4S)(9-{2-[(2S,5S){(2S,3S)
[(methoxycarbonyl)amino]methylpentanoyl}methylpyrrolidinyl]-1H-imidazolyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate (0.031 g, 38%). 1H-
NMR: 400 MHz, (MeOD) δ: (Mixture of rotamers) 8.34 (m, 1H), 7.91-9.97 (m, 2H), 7.50-
7.81 (m, 3H), 7.35-7.38 (m, 2H), 5.17-5.26 (m, 3H), 5.08 (m, 1H), 4.14-4.33 (m, 4H), 3.64 (s,
3H), 3.63 (s, 3H), 3.51- 3.59 (m, 3H), 3.37 (s, 3H), 2.71 (m, 1H), 2.55-2.59 (m, 1H), 2.23-
2.33 (m, 1H), 1.92-2.10 (m, 2H), 1.77-1.89 (m, 1H), 1.60 (m, 1H), 1.48 (d, 1H), 1.11-1.22
(m, 2H), 0.81-0.98 (m, 12H). MS (ESI) m/z 864.27 [M + H]+.
Example PF
O O N
N N
H H
Moc-Val-OH, HATU, O N
B N
DIPEA, DMF
O N
N O Pd(PPh3)4, PdCl2(dppf),
H K2CO3, DME/ DMF, 85°C
methyl [(2S){(2S,4S)ethoxy[9-(4,4,5,5-tetramethyl-1,3,2-
orolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinyl}methyloxobutanyl]carbamate
H O
O O H
N N
N N N
N O
methyl {1-[2-{9-[2-(1-{[(methoxycarbonyl)amino](phenyl)acetyl}methylpyrrolidin-
2-yl)-1H-imidazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
2-yl}(methoxymethyl)pyrrolidiny
l]methyloxobutanyl}carbamate
tert-butyl (2S,4S)(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidine
carboxylate
The title compound was obtained as in example LQ but using (2S,4S)(tertbutoxycarbonyl
)(methoxymethyl)pyrrolidinecarboxylic acid in place of (S)(tertbutoxycarbonyl
)pyrrolidinecarboxylic acid.
methoxymethyl)pyrrolidinyl](4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazole
Tert-butyl (2S,4S)(methoxymethyl)[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidine
carboxylate ( 310mg, 0.507mmol) was d with 2mL 1.25N HCl in ethanol and d at
room temperature for 2h then at 500C for 2h. The reaction mixture was concentrated under
d pressure to give a dark yellow solid that was directly in the next step.
methyl [(2S){(2S,4S)ethoxy[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}methyl
oxobutanyl]carbamate
A mixture of (S)(methoxycarbonylamino)methylbutanoic acid (107mg,
0.608mmol), HATU (231mg, 0.608mmol) and 6mL 10% DIPEA in DMF was pre-activated
for 5 minutes, then it was added to the amine salt from the step above and allowed to stir
overnight. The reaction mixture was partitioned between ethyl acetate and ted sodium
bicarbonate. The organic phase was concentrated and purified by silica gel chromatography.
(103mg)
tert-butyl 2-[5-(2-{1-[N-(methoxycarbonyl)valyl](methoxymethyl)pyrrolidinyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
methylpyrrolidinecarboxylate
The title compound was obtained as in example LQ but using methyl [(2S)
S)ethoxy[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}methyl
oxobutanyl]carbamate (103mg, 0.154mmol) in place of tert-butyl 2-[9-(4,4,5,5-
tetramethyl-1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinecarboxylate and methyl (S)((2S,4S)(5-iodo-1H-
imidazolyl)methylpyrrolidinyl)methyloxobutanylcarbamate (58mg,
0.154mmol)in place of methyl (S)((S)(5-bromo-1H-imidazolyl)pyrrolidinyl)
methyloxobutanylcarbamate. (50.0mg)
methyl {1-[4-(methoxymethyl){9-[2-(4-methylpyrrolidinyl)-1H-imidazolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}pyrrolidinyl]methyl
oxobutanyl}carbamate
tert-butyl 2-[5-(2-{1-[N-(methoxycarbonyl)valyl](methoxymethyl)pyrrolidin
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
methylpyrrolidinecarboxylate (50mg, mol) was treated with 2mL 1.25N HCl in
ethanol and heated at 600C for 2h, then it was concentrated under reduced pressure and
pumped dry under high vacuum and used directly in the next step.
methyl {1-[2-{9-[2-(1-{[(methoxycarbonyl)amino](phenyl)acetyl}methylpyrrolidin
-imidazolyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-
4-(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
A e of (methoxycarbonylamino)phenylacetic acid (13mg,
0.063mmol), COMU (30mg, 0.069mmol) in 0.500mL DMF and DIPEA (0.033mL,
0.189mmol) was allowed to preactivate for 15 minutes before it was added to the solid crude
amine salt from the previous step and stirred overnight. The product was purified by reverse
phase HPLC. The product was ted to the free base by dissolution in 2mL 1:1
acetonitrile:methanol and passage through a prepacked cartridge of polymer supported
carbonate. Concentration and drying gave an off white powder. g).
MS (ESI) m/z 883.8 [M + H]+
'H NMR (CD3CN) 8.176 (s, 1H), 7.778 (m, 1H), 7.596-7.521 (m, 4H), 7.455-7.347
(m, 6H), 7.218 (s, 1H), 5.482 (s, 1H), 5.310 (m, 1H), 5.192 (m, 1H), 4.999 (q, 2H, J= 14 Hz),
4.372 (d, 1H, J= 6.4 Hz), 4.279 (m, 1H), 3.800-3.697 (m, 2H), 3.632 (s, 3H) 3.597-3.445 (m,
7H), 3.355 (s, 3H), 2.876 (m, 2H), 2.761 (m, 1H), 2.583 (m, 2H), 2.220 (m, 2H), 1.764 (m,
1H), 1.070 (d, 3H, J = 6.4 Hz), 1.020 (d, 3H, J = 6.4 Hz), 0.898 (d, 3H, J = 6.4 Hz).
Example PG
O N
N N
H H
O N
B N
O N
O Pd(PPh3)4, PdCl2(dppf),
N O
H K2CO3, DME/ DMF, 85°C
methyl 3-methyl{(2S,4S)methyl[9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinyl}oxobutanyl]carbamate
H O
N H
O O
N N
N N N
N O
methyl {(1R)[(2S,4S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]-
3-methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)-
4-methylpyrrolidinyl]oxophenylethyl}carbamate
tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin-
2-yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl]methylpyrrolidinecarboxylate
The title compound was obtained as in example LQ but using methyl [(2S)methyl-
1-{(2S,4S)methyl[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}oxobutan
yl]carbamate , mol) in place of tert-butyl 2-[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinecarboxylate and methyl (S)((2S,4S)(5-iodo-1H-imidazolyl)
methylpyrrolidinyl)methyloxobutanylcarbamate , 0.481mmol)in place of
methyl (S)((S)(5-bromo-1H-imidazolyl)pyrrolidinyl)methyloxobutan
ylcarbamate. (200.8mg)
methyl {(2S)methyl[(2S,4S)methyl(9-{2-[(2S,4S)methylpyrrolidinyl]-
1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)pyrrolidinyl]oxobutanyl}carbamate
Tert-butyl (2S,4S)[5-(2-{(2S,4S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
olyl]methylpyrrolidinecarboxylate (200mg, 0.262mmol) was treated with
2mL 1.25N HCl in ethanol and heated at 600C for 2h, then it was concentrated under reduced
pressure and pumped dry under high vacuum and used directly in the next step.
methyl {(1R)[(2S,4S)(5-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]oxophenylethyl}carbamate
A mixture of (R)(methoxycarbonylamino)phenylacetic acid (13mg,
0.063mmol), COMU (30mg, 0.069mmol) in 1.5mL DMF was allowed to preactivate for 5
minutes before it was added to a solution of the amine from the previous salt in 1.5mL DMF
and DIPEA (0.137mL, 0.786mmol) and stirred overnight. The product was purified by
reverse phase HPLC. The product was converted to the free base by dissolution in 2mL 1:1
acetonitrile:methanol and e through a prepacked cartridge of polymer supported
carbonate. Concentration and drying gave an off white . (25.8mg).
MS (ESI) m/z 853.8 [M + H]+.
'H NMR (CD3CN) 8.164 (s, 1H), 7.781 (m, 1H), 7.609 (m, 2H), 7.535 (m, 2H), 7.433-
7.305 (m, 6H), 7.229 (s, 1H), 5.482 (s, 1H), 5.290 (m, 1H), 5.191 (m, 1H), 4.997 (m, 2H),
4.372 (d, 1H, J= 6.4 Hz), 4.267 (m, 1H), 3.735-3.445 (m, 10H), 2.573 (m, 4H), 2.197 (m,
2H), 2.017 (m, 1H), 1.760 (m, 1H), 1.204 (d, 3H, J= 6.4 Hz), 1.068 (d, 3H, J = 6.4 Hz),
1.010 (d, 3H, J = 6.8 Hz), 0.887 (d, 3H, J = 6.8 Hz).
Example PH
tert-butyl (2S,4S)[5-(2-{(2S)[(benzyloxy)carbonyl]pyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
The title compound was ed as in example OF (compound tert-butyl (2S,4S)
[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate) but using (S)(benzyloxycarbonyl)pyrrolidine-
oxylic acid in place of (2S,5S)((S)(methoxycarbonylamino)methylbutanoyl)-
-methylpyrrolidinecarboxylic acid in step 6.
tert-butyl )(methoxymethyl)(5-{2-[(2S)-pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinecarboxylate
A mixture of tert-butyl )[5-(2-{(2S)[(benzyloxy)carbonyl]pyrrolidin
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate (724mg, ol) and 70mg 10%Pd/C in 20mL
l was hydrogenated at 1atm overnight. Additional 10%Pd/C (300mg) and a n of
solid NaHCO3 was added and hydrogenation continued for 4 hours. Filtration through celite
and concentration of the filtrate under reduced pressure gave the product as a dark brown
solid, 454mg. cation by reverse phase HPLC gave 65mg purified product.
methyl {(1R)[(2S)(9-{2-[(2S,4S)(methoxymethyl)pyrrolidinyl]-1H-imidazol
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinyl]
oxophenylethyl}carbamate
A mixture of (R)(methoxycarbonylamino)phenylacetic acid (22mg,
0.105mmol), COMU (45mg, 0.069mmol), and utyl (2S,4S)(methoxymethyl)(5-
{2-[(2S)-pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-
1H-imidazolyl)pyrrolidinecarboxylate (65mg, 0.105mmol) in 1.5mL 10% DIPEA in
DMF was stirred for 1.5h. The reaction e was partitioned between ethyl acetate and
saturated sodium bicarbonate. The organic phase was dried over sodium sulphate, filtered
and concentrated under reduced pressure. The crude intermediate was treated with 8mL
1.25N HCl in ethanol at 500C for 4h. Added saturated sodium bicarbonate and extracted the
free base into dichloromethane. (106mg).
methyl {(2S)[(2S,4S)(5-{2-[(2S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl}-1H-imidazolyl)(methoxymethyl)pyrrolidinyl]methyl
oxobutanyl}carbamate
A mixture of methyl {(1R)[(2S)(9-{2-[(2S,4S)(methoxymethyl)pyrrolidin
yl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)pyrrolidinyl]oxophenylethyl}carbamate (55mg, 0.077mmol), (S)
(methoxycarbonylamino)methylbutanoic acid (14mg, 0.077mmol), HATU (32mg,
0.085mmol) and 0.4mL 10% DIPEA in DMF was stirred at room temperature for 1 hour.
The product was purified by reverse phase HPLC. The product was converted to the free
base by dissolution in 2mL 1:1 acetonitrile:methanol and passage through a prepacked
cartridge of polymer ted carbonate. The eluent was concentrated, the taken up in
1%TFA in 1:1 acetonitrile:water, frozen, and lyophilized to give the product as a
trifluoroacetate salt. (30.7mg)
MS (ESI) m/z 869.9 [M + H]+.
methyl {(1R)[(2S)(9-{2-[(2S,4S)[N-(methoxycarbonyl)-O-methyl-L-threonyl]
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidinyl]oxo
phenylethyl}carbamate
A mixture of methyl {(1R)[(2S)(9-{2-[(2S,4S)(methoxymethyl)pyrrolidin
yl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)pyrrolidinyl]oxophenylethyl}carbamate (51mg, 0.072mmol), (2S,3R)
methoxy(methoxycarbonylamino)butanoic acid (14mg, 0.072mmol), HATU (30mg,
0.079mmol) and 0.4mL 10% DIPEA in DMF was stirred at room temperature for 1 hour.
The product was purified by reverse phase HPLC. The product was converted to the free
base by dissolution in 2mL 1:1 itrile:methanol and e through a prepacked
cartridge of polymer supported carbonate. The eluent was concentrated, the taken up in
1%TFA in 1:1 acetonitrile:water, frozen, and lyophilized to give the product as a
trifluoroacetate salt. (24mg)
MS (ESI) m/z 885.8 [M + H]+;
'H NMR ) 7.635 (s, 1H), 7.434 (m, 3H), 7.330 (m, 4H), 7.233 (m, 1H), 7.164
(m, 1H), 6.983 (m, 1H), 6.747 (m, 2H), 6.127 (m, 1H), 5.584 (d, 1H, J = 6.4 Hz), 5.431 (m,
1H), 5.145 (m, 1H), 4.729 (s, 2H), 4.442 (m, 1H), 4.029 (m, 2H), 3.838 (m, 1H), 3.662-3.534
(m, 2H), 3.572 (s, 3H) 3.552 (s, 3H), 3.444-3.310 (m, 3H), 3.240 (s, 3H), 3.225 (s, 3H), 2.618
(m, 1H), 2.464 (m, 1H), 2.304 (m, 1H), 2.129 (m, 1H), 2.041 (m, 1H), 1.899 (m, 2H), 1.107
(d, 3H, J = 6.4 Hz).
Example PI
O H
H N
N N 10% Pd/C, H2 Boc N N
Boc N
N N N N H
N N O H
H O EtOH
tert-butyl (2S,4S)[5-(2-{(2S,5S)
[(benzyloxy)carbonyl]methylpyrrolidinyl}-1,11- tert-butyl (2S,4S)(methoxymethyl)(5-{2-[(2S,5S)
oisochromeno[4',3':6,7]naphtho[1,2- methylpyrrolidinyl]-1,11-
d]imidazolyl)-1H-imidazolyl] dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
(methoxymethyl)pyrrolidinecarboxylate yl}-1H-imidazolyl)pyrrolidinecarboxylate
O O (2S,3R)
methoxy
O OH (methoxycarbonyla
mino)butanoic acid O H
1) HATU, DIPEA, DMF N N
H N O
2) HCl in Ethanol N N N
H O
N O
methyl {(2S,3R)methoxy[(2S,5S)(9-{2-[(2S,4S)
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
-methylpyrrolidinyl]oxobutanyl}carbamate
NH H
Moc-Val-OH, HATU, O O
N N
DIPEA, DMF N O
N N N
H O
N O
methyl {(2S)[(2S,4S)(5-{2-[(2S,5S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-
imidazol
yl)(methoxymethyl)pyrrolidinyl]methyloxobutan
yl}carbamate
utyl (2S,4S)[5-(2-{(2S,5S)[(benzyloxy)carbonyl]methylpyrrolidinyl}-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
The title compound was obtained as in example OF (compound tert-butyl )
[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,4,5,11-
tetrahydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
xymethyl)pyrrolidinecarboxylate) but using (2S,5S)(benzyloxycarbonyl)
methylpyrrolidinecarboxylic acid in place of (2S,5S)((S)(methoxycarbonylamino)
methylbutanoyl)methylpyrrolidinecarboxylic acid.
tert-butyl (2S,4S)(methoxymethyl)(5-{2-[(2S,5S)methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinecarboxylate
A mixture of tert-butyl (2S,4S)[5-(2-{(2S,5S)[(benzyloxy)carbonyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (830mg, 1.08mmol) and 100mg
%Pd/C in 20mL ethanol was hydrogenated at 1atm overnight. Additional 10%Pd/C
(300mg) and a portion of solid NaHCO3 was added and hydrogenation continued for 4 hours.
Filtration h celite and concentration of the te under reduced pressure gave the
product as a dark brown solid, 722mg. Purification by reverse phase HPLC gave 100mg
purified t.
methyl {(2S,3R)methoxy[(2S,5S)(9-{2-[(2S,4S)(methoxymethyl)pyrrolidin
yl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
-methylpyrrolidinyl]oxobutanyl}carbamate
A mixture of tert-butyl (2S,4S)(methoxymethyl)(5-{2-[(2S,5S)
methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-
imidazolyl)pyrrolidinecarboxylate (101mg, 0.159mmol), )methoxy
(methoxycarbonylamino)butanoic acid (30mg, 0.159mmol), HATU (61mg, 0.159mmol) and
2mL 10% DIPEA in DMF was stirred at room temperature for 1.5 hours. Saturated sodium
onate was added and the t was extracted into dichloromethane, dried over
sodium sulphate, ed and concentrated under reduced pressure. This crude product was
treated with 5mL 1.25N HCl in ethanol at 500C for 4h and then it was concentrated under
reduced pressure. ted sodium bicarbonate was added and the product was extracted
into dichloromethane, dried over sodium sulphate, filtered and concentrated under reduced
pressure. g)
methyl {(2S)[(2S,4S)(5-{2-[(2S,5S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
A mixture of methyl {(2S,3R)methoxy[(2S,5S)(9-{2-[(2S,4S)
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
oxobutanyl}carbamate (74.6mg, 0.105mmol), (S)(methoxycarbonylamino)
methylbutanoic acid (18.5mg, 0.105mmol), HATU (44mg, 0.116mmol) and 0.6mL 10%
DIPEA in DMF was stirred at room temperature for 1 hour. The product was purified by
reverse phase HPLC. (48.1mg)
MS (ESI) m/z 866.1 [M + H]+.
Example PJ
tert-butyl )(9-{2-[(2S,4S)[N-(methoxycarbonyl)-L-valyl]
(trifluoromethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinecarboxylate
The title compound was prepared as in example OF for compound tert-butyl (2S,4S)-
2-[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate, by using (2S,4S)((S)
(methoxycarbonylamino)methylbutanoyl)(trifluoromethyl)pyrrolidinecarboxylic
acid in place of (2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic
acid and (2S,4S)(tert-butoxycarbonyl)(methoxymethyl)pyrrolidinecarboxylic acid in
place of )((S)(methoxycarbonylamino)methylbutanoyl)methylpyrrolidine-
2-carboxylic acid.
methyl {(1R)[(2S,4S)(9-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}(trifluoromethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
tert-butyl (2S,4S)(9-{2-[(2S,4S)[N-(methoxycarbonyl)-L-valyl]
(trifluoromethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)(methoxymethyl)pyrrolidine
carboxylate (<0.412mmol, crude from us step) was treated with 6mL 4N HCl in
dioxane at room temperature overnight and then at 50OC for 1 hour. l ether (20mL)
was added and the itate of hydrochloride salt was collected by vacuum tion.
(126mg, 0.16mmol). This material was combined with (R)(methoxycarbonylamino)
phenylacetic acid (34mg, 0.16mmol), COMU (70mg, 0.16mmol), and 1.6mL of 10% DIPEA
in DMF. After 1 hour at room temperature, the mixture was added dropwise into 25mL
saturated sodium bicarbonate, with stirring and the resulting precipitate was collected by
vacuum filtration and washed with 2mL water. The product was purified, then ified by
reverse phase HPLC. (3.5mg).
MS (ESI) m/z 938.1 [M + H]+.
Example PK
(2S,4S)-tert-butyl 2-formylmethylpyrrolidinecarboxylate:
A mixture of (2S,4S)(tert-butoxycarbonyl)methylpyrrolidinecarboxylic acid
(5.2g, 22.7 mmol), O,N-dimethylhydroxylamine hydrochloride (2.4g, 24.9mmol), HATU
, 27.2mmol) and DIPEA (9.5mL, 54.5mmol) in 114mL DMF was stirred at room
temperature overnight. The mixture was extracted into ethyl acetate and washed with
saturated bicarbonate and water, dried over sodium sulphate, filtered, and concentrated. It
was then dissolved in diethyl ether (100mL) and washed with water to remove residual DMF,
dried, filtered, and concentrated to a pale yellow oil , 19.5mmol) of (2S,4S)-tert-butyl
2-(methoxy(methyl)carbamoyl)methylpyrrolidinecarboxylate.
(2S,4S)-tert-butyl 2-(methoxy(methyl)carbamoyl)methylpyrrolidinecarboxylate
(5.30g, 19.5mmol) was dissolved in 120mL THF, cooled to -78OC and treated with lithium
aluminum hydride (1M in THF, 19.5mL, ol) dropwise via addition funnel. After 1
hour, the mixture was brought to 0OC and kept at that temperature for 2 hours. It was
quenched by dropwise addition of a 50mL on of 3.0g KHSO4 in water, removed from
the ice bath, and stirred 15 minutes at room temperature. The product was extracted with
three 75mL portions of ethyl acetate and washed with brine. The organic phase was dried
over sodium sulphate, filtered, and trated to give crude (2S,4S)-tert-butyl 2-formyl
methylpyrrolidinecarboxylate. (4.89g)
(2S,4S)-tert-butyl 2-(1H-imidazolyl)methylpyrrolidinecarboxylate:
To a solution of (2S,4S)-tert-butyl 2-formylmethylpyrrolidinecarboxylate
(4.89g, 22.9mmol), ammonium hydroxide (17mL) and water (17mL) was added, se,
glyoxal (40% in water, 14.6mL, 128mmol) and the resulting mixture was stirred at room
temperature overnight. Saturated sodium bicarbonate ) was added and the e
was extracted with four 75mL portions of romethane. The organic phase was washed
with water, dried over sodium sulphate, ed and concentrated, and then purified by silica
gel chromatography to give a total of 3.76g product.
(2S,4S)-tert-butyl 2-(5-iodo-1H-imidazolyl)methylpyrrolidinecarboxylate:
A mixture of (2S,4S)-tert-butyl 2-(1H-imidazolyl)methylpyrrolidine
carboxylate (1.0g, 3.97mmol), iodine (2.22g, ol) and sodium carbonate (1.3g,
12.31mmol) in 20mL dioxane and 13.25mL water was covered in foil and stirred at room
temperature overnight. The mixture was diluted with ethyl acetate and treated with 10%
sodium lfate (5mL) and stirred for 10 minutes. The organic phase was washed with
brine, and then the aqueous phase was back extracted with ethyl acetate. The combined
organic phases were dried over sodium sulphate, filtered and concentrated to provide crude
(2S,4S)-tert-butyl 2-(4,5-diiodo-1H-imidazolyl)methylpyrrolidinecarboxylate
(2.25g) as a pale yellow solid.
A solution of (2S,4S)-tert-butyl 2-(4,5-diiodo-1H-imidazolyl)methylpyrrolidine-
1-carboxylate (2.25g, 4.4mmol) in 18mL ethanol and 18mL water was treated with sodium
sulfite (5.59g, 44.4 mmol) and heated at 90 OC overnight. The mixture was partitioned
between ethyl acetate and water. The aqueous phase was extracted with more ethyl acetate
and the ed organic phase was washed with brine, dried over sodium sulphate, filtered,
concentrated, and purified by silica gel tography to give 766mg )-tert-butyl 2-
(5-iodo-1H-imidazolyl)methylpyrrolidinecarboxylate.
Example PL
(2S,3aS,6aS)(tert-butoxycarbonyl)octahydrocyclopenta[b]pyrrolecarboxylic acid
To a solution of commercially available (2S,3aS,6aS)-benzyl
octahydrocyclopenta[b]pyrrolecarboxylate hydrochloride (4.70 g, 16.68 mmol) in
methylene chloride (42 mL) was added Di-tert-butyl dicarbonate (7.28 g, 33.36 mmol), N,N-
diisopropylethylamine (5.82 mL, 33.36 mmol) and 4-(Dimethylamino)pyridine (0.20 g, 1.67
mmol). The solution was stirred under air for 16 hours. Upon completion, the on was
trated in vacuo, diluted in ethyl acetate, and washed with 1N HCl. The aqueous layers
were backextracted twice with ethyl acetate and the combined organic layers were dried over
sodium sulfate, filtered and concentrated. The resulting e was purified by silica gel
chromatography (5-40% ethyl acetate in hexanes) to afford (2S,3aS,6aS)(tert-
butoxycarbonyl)octahydrocyclopenta[b]pyrrolecarboxylic acid which was used without
further purification. MS (ESI) m/z 368.47 [M + Na]+.
(2S,3aS,6aS)(tert-butoxycarbonyl)octahydrocyclopenta[b]pyrrolecarboxylic acid
To a 250mL round bottom flask d with a stir bar and (2S,3aS,6aS)benzyl 1-
tert-butyl hexahydrocyclopenta[b]pyrrole-1,2(2H)-dicarboxylate (5.76 g, 16.68 mmol) was
added 10% Palladium on carbon (1.77g). l was poured over the mixture and the
reaction mixture was evacuated and flushed with hydrogen gas three times. The suspension
was stirred at room temperature under an atmosphere of hydrogen for 24 hours. Upon
completion, the reaction mixture was filtered through celite and concentrated to give
(2S,3aS,6aS)(tert-butoxycarbonyl)octahydrocyclopenta[b]pyrrolecarboxylic acid
(4.45g, >99%). MS (ESI) m/z 256.21 [M + H]+.
Example PM
O H H
H 1) HCl N
N Cl N
Cl N
N Boc 2) HATU O
HN O
MocVal
tert-butyl (3aS,6aS)(9-chloro-1,12- methyl {(2S)[(2S,3aS,6aS)(9-chlorodihydrochromeno
[4',3':6,7]naphtho[1,2-d]imidazol- 1,11-
2-yl)hexahydrocyclopenta[b]pyrrole-1(2H)- dihydroisochromeno[4',3':6,7]naphtho[1,2-
carboxylate d]imidazol
yl)hexahydrocyclopenta[b]pyrrol-1(2H)-yl]
methyloxobutanyl}carbamate
O H H N
Boc Br
O N N N N
Pd2dba3 O N H
HN O tert-butyl 2-(5-bromo-1HBis-PinB
imidazolyl)pyrrolidine
XPhos O
methyl {(2S)methyloxo carboxylate
[(2S,3aS,6aS)[9-(4,4,5,5-tetramethyl-
dioxaborolanyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2- Pd(PPh3)4
d]imidazol PdCl(dppf)
yl]hexahydrocyclopenta[b]pyrrol-1(2H)-
yl]butanyl}carbamate
O H H
N N
Boc N
N N N
H O
HN O
tert-butyl 2-[5-(2-{(2S,3aS,6aS)[N-
(methoxycarbonyl)-L-
valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate
utyl 2-[5-(2-{(2S,3aS,6aS)[N-(methoxycarbonyl)-L-
valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl]pyrrolidinecarboxylate
This compound was made in an ous manner to tert-butyl (2R)[5-(2-{(2S)
[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-3,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate substituting (2S,3aS,6aS)(tert-butoxycarbonyl)octahydrocyclopenta[b]pyrrole-
2-carboxylic acid for the initial alkylation of 9-bromochloro-10,11-dihydro-6H-
naphtho[2,3-c]chromen-8(9H)-one. Reactions in the synthesis of tert-butyl 2-
{(2S,3aS,6aS)[N-(methoxycarbonyl)-L-valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate gave similar product yields as in the synthesis of tert-butyl (2R)[5-(2-{(2S)
[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-3,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate. MS (ESI) m/z 774.1 [M + H]+.
Example PN
O H H
N N N
Boc 1) HCl
N N N
H O
HN O 2) COMU,
R-MocPhg
tert-butyl 2-[5-(2-{(2S,3aS,6aS)[N-
(methoxycarbonyl)-L-
valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
-imidazolyl]pyrrolidinecarboxylate
HN O H H
N N N
N N N
H O
HN O
methyl {(1R)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]-
3-methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol-
yrrolidinyl]oxophenylethyl}carbamate
methyl {(1R)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinyl]oxophenylethyl}carbamate
To a on of tert-butyl 2-[5-(2-{(2S,3aS,6aS)[N-(methoxycarbonyl)-L-
valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]pyrrolidinecarboxylate (0.128 g, 0.165 mmol) in a
mixture of CH2Cl2 (1.6 mL) and MeOH (0.33 mL) was added HCl (4M in oxane, 1.24
mL, 4.9 mmol). The solution was stirred at room temperature for 1.5 h and concentrated to
dryness.
The intermediate was dissolved in CH2Cl2 (1.6 mL). (methoxycarbonylamino)-
2-phenylacetic acid (0.052 g, 0.25 mmol) and DIPEA (0.087 mL, 0.496 mmol) were then
added to the solution. The reaction mixture was cooled to -40 °C (external temperature,
MeCN/CO2(s) bath). COMU (0.113 g, 0.265 mmol) was then added and solution was
allowed to warm to 0 °C over 1.5 h. Upon completion by LCMS, the solution was diluted
with DMF and concentrated. The crude product was purified by preparative HPLC (Gemini
column, 10-47% MeCN/H2O with 0.1% TFA) and the d fractions were combined. The
solution was concentrated until the aqueous layer remained and aqueous bicarbonate (sat.)
was slowly added until the solution was basic. The ing slurry was stirred at room
temperature for 2h and filtered. The resulting solid was dried in vacuo to provide methyl
{(1R)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]oxophenylethyl}carbamate (0.068 g, 48%).
MS (ESI) m/z 865.7 [M + H]+. 1H NMR (400 MHz, cd
3od) δ 8.44 – 8.30 (m, 1H),
8.02 – 7.82 (m, 2H), 7.81 – 7.58 (m, 4H), 7.50 – 7.11 (m, 6H), 7.09 – 6.83 (m, 2H), 5.72 –
.45 (m, 2H), 5.41 (s, 1H), 5.34 – 5.28 (m, 1H), 5.22 (s, 3H), 4.69 – 4.64 (m, 1H), 4.26 – 4.19
(m, 1H), 4.03 – 3.98 (m, 1H), 3.96 – 3.91 (m, 1H), 3.66 (d, 4H), 2.98 – 2.91 (m, 1H), 2.88 –
2.83 (m, 1H), 2.58 – 2.48 (m, 1H), 2.27 – 2.12 (m, 4H), 2.11 – 2.00 (m, 3H), 2.00 – 1.89 (m,
2H), 1.77 – 1.72 (m, 1H), 1.31 – 1.04 (m, 3H), 0.93 (d, 6H).
Example PO
O H H
N N N 1) HCl
N N N
H O O 2) HATU,
HN S-MocVal
tert-butyl 2-{(2S,3aS,6aS)[N-
(methoxycarbonyl)-L-
octahydrocyclopenta[b]pyrrolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)-1H-imidazolyl]pyrrolidinecarboxylate
HN O H H
N N N
N N N
H O
HN O
methyl {(2S)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol-
2-yl)pyrrolidinyl]methyloxobutanyl}carbamate
methyl {(2S)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinyl]methyloxobutanyl}carbamate
To a solution of tert-butyl 2-{(2S,3aS,6aS)[N-(methoxycarbonyl)-L-
valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]pyrrolidinecarboxylate (0.030 g, 0.039 mmol) in a
mixture of CH2Cl2 (0.39 mL) and MeOH (0.078 mL) was added HCl (4M in oxane,
0.29 mL, 1.16 mmol). The solution was stirred at room temperature for 1.5 h and
concentrated to dryness.
The intermediate was dissolved in CH2Cl2 (0.39 mL). (S)(methoxycarbonylamino)-
3-methylbutanoic acid (0.007 g, 0.043 mmol) and DIPEA (0.020 mL, 0.116 mmol) were then
added to the solution. HATU (0.018 g, 0.047 mmol) was added and solution was allowed to
stir at room temp. Upon completion, the solution was diluted with DMF and concentrated.
The crude product was purified by preparative HPLC (Gemini column, 10-47% MeCN/H2O
with 0.1% TFA) and the desired fractions were combined and lized to provide methyl
{(2S)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]methyloxobutanyl}carbamate (0.010g, 31%). MS (ESI) m/z 832.2 [M + H]+.
e PP
methyl [(1S)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinyl]oxo(tetrahydro-2H-pyranyl)ethyl]carbamate
This nd was made in an analogous manner to methyl {(2S)[2-(5-{2-
[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]methyloxobutanyl}carbamate, substituting (S)(methoxycarbonylamino)
(tetrahydro-2H-pyranyl)acetic acid for (S)(methoxycarbonylamino)methylbutanoic
acid to give methyl [(1S)[2-(5-{2-[(2S,3aS,6aS){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}octahydrocyclopenta[b]pyrrolyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)pyrrolidin
yl]oxo(tetrahydro-2H-pyranyl)ethyl]carbamate (0.039 g, 56%). MS (ESI) m/z
874.34 [M + H]+. 1H NMR (400 MHz, cd
3od) δ 8.58 (s, 2H), 8.26 – 8.08 (m, 2H), 7.96 –
7.75 (m, 4H), 7.65 – 7.54 (m, 5H), 5.36 – 5.11 (m, 4H), 4.34 – 4.04 (m, 4H), 3.97 – 3.79 (m,
4H), 3.65 (s, 4H), 3.53 – 3.44 (m, 2H), 2.68 – 2.47 (m, 4H), 2.32 – 2.02 (m, 7H), 1.95 – 1.82
(m, 3H), 1.77 – 1.54 (m, 4H), 1.49 – 1.24 (m, 5H), 1.10 – 0.99 (m, 3H), 0.92 – 0.85 (m, 4H).
Example PQ
O H H F 1) HCl
N N N
N N N 2) COMU,
H O O MocPhg
tert-butyl 2-{(2S,4S)[(difluoromethoxy)methyl]-
1-[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)-1H-imidazolyl]pyrrolidinecarboxylate
O O
HN O H H F
O N N N
N N N
H O
HN O
methyl {(1R)[2-(5-{2-[(2S,4S)[(difluoromethoxy)methyl]{(2S)-
2-[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imid
azolyl)pyrrolidinyl]oxophenylethyl}carbamate
tert-butyl 2-[5-(2-{(2S,4S)[(difluoromethoxy)methyl][N-(methoxycarbonyl)-L-
valyl]pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
1H-imidazolyl]pyrrolidinecarboxylate
This compound was made in an analogous manner to tert-butyl 2-
{(2S,3aS,6aS)[N-(methoxycarbonyl)-L-valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate substituting (2S,4S)(tert-butoxycarbonyl)
((difluoromethoxy)methyl)pyrrolidinecarboxylic acid for the initial alkylation of 9-bromo-
3-chloro-10,11-dihydro-6H-naphtho[2,3-c]chromen-8(9H)-one. Reactions in the synthesis of
utyl 2-[5-(2-{(2S,4S)[(difluoromethoxy)methyl][N-(methoxycarbonyl)-L-
valyl]pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]pyrrolidinecarboxylate gave similar product yields as in the synthesis of
tert-butyl 2-[5-(2-{(2S,3aS,6aS)[N-(methoxycarbonyl)-L-
valyl]octahydrocyclopenta[b]pyrrolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl]pyrrolidinecarboxylate. MS (ESI) m/z 815.04 [M +
H]+. 1H NMR (400 MHz, cd
3od) δ 8.58 (s, 1H), 8.18 (d, 1H), 7.96 – 7.85 (m, 3H), 7.70 (s,
1H), 7.60 (d, 1H), 7.50 – 7.38 (m, 4H), 7.10 (s, 1H), 6.46 (t, 1H), 5.51 (s, 1H), 5.39 – 5.36
(m, 1H), 5.31 – 5.28 (m, 2H), 4.43 – 4.36 (m, 1H), 4.24 (d, 1H), 4.13 – 4.02 (m, 3H), 3.75 –
3.62 (m, 7H), 3.51 – 3.47 (m, 1H), 3.18 – 3.11 (m, 2H), 2.93 – 2.83 (m, 2H), 2.75 – 2.69 (m,
1H), 2.47 – 2.36 (m, 2H), 2.23 – 2.09 (m, 3H), 2.01 – 1.94 (m, 2H), 0.87 (dd, 6H).
Example PR
HO N
O (1R,5R)(tert-
O butoxycarbonyl) Cl
Cl azabicyclo[3.1.0]hexane O N
Br carboxylic acid Boc
9-bromochloro-10,11-dihydro-5H- (1R,5R)tert-butyl 3-(3-chlorooxodibenzo
hromen-8(9H)-one 8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl) 2-
azabicyclo[3.1.0]hexane-2,3-
dicarboxylate
O H
NH4OAc O H H MnO2 N
N N Cl N
Cl Boc N Boc
tert-butyl (1R,5R)(9-chloro-1,12-
tert-butyl (1R,3S,5R)(9-chloro- dihydrochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
11- 2-azabicyclo[3.1.0]hexanecarboxylate
tetrahydroisochromeno[4',3':6,7]naphtho[
1,2-d]imidazolyl)
azabicyclo[3.1.0]hexanecarboxylate
O H H
1) HCl N
Cl N Pd2dba3
2) HATU O
HN O Bis-PinB
MocVal XPhos
methyl {(2S)[(1R,3S,5R)(9-chloro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
azabicyclo[3.1.0]hexyl]methyloxobutan
yl}carbamate
tert-butyl (2S,4S)[5-(2-{(1R,3S,5R)[N-(methoxycarbonyl)-L-valyl]
azabicyclo[3.1.0]hexyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate
This nd was made in an analogous manner to tert-butyl (2R)[5-(2-{(2S)
[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-3,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate substituting (1R,5R)(tert-butoxycarbonyl)azabicyclo[3.1.0]hexane
carboxylic acid for the l alkylation of 9-bromochloro-10,11-dihydro-5H-
dibenzo[c,g]chromen-8(9H)-one, and substituting (2S,4S)-tert-butyl 2-(5-iodo-1H-imidazol-
2-yl)(methoxymethyl)pyrrolidinecarboxylate for the Suzuki-Miyara coupling.
Reactions in the synthesis of tert-butyl (2S,4S)[5-(2-{(1R,3S,5R)[N-
(methoxycarbonyl)-L-valyl]azabicyclo[3.1.0]hexyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylategave similar t yields as in the synthesis of
tert-butyl (2R)[5-(2-{(2S)[N-(methoxycarbonyl)-L-valyl]pyrrolidinyl}-3,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]pyrrolidine
carboxylate. MS (ESI) m/z 791.0 [M + H]+.
methyl {(1R)[(2S,4S)(5-{2-[(1R,3S,5R){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}azabicyclo[3.1.0]hexyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
To a solution of tert-butyl (2S,4S)[5-(2-{(1R,3S,5R)[N-(methoxycarbonyl)-L-
valyl]azabicyclo[3.1.0]hexyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate (0.060 g,
0.076 mmol) in a mixture of CH2Cl2 (0.76 mL) and MeOH (0.15 mL) was added HCl (4M in
oxane, 0.570 mL, 2.28 mmol). The solution was d at room temperature for 2 h
and concentrated to dryness.
The intermediate was dissolved in CH2Cl2 (0.76 mL). (R)
(methoxycarbonylamino)phenylacetic acid (0.024 g, 0.114 mmol) and DIPEA (0.040 mL,
0.228 mmol) were then added to the solution. The reaction mixture was cooled to -40 °C
(external temperature, MeCN/CO2(s) bath). COMU (0.052 g, 0.122 mmol) was then added
and solution was d to warm to 0 °C over 1.5 h. Upon completion by LCMS, the
solution was diluted with DMF and concentrated. The crude product was purified by
preparative HPLC i column, 10-45% MeCN/H2O with 0.1% TFA) and lyophilized to
provide methyl {(1R)[(2S,4S)(5-{2-[(1R,3S,5R){(2S)[(methoxycarbonyl)amino]-
3-methylbutanoyl}azabicyclo[3.1.0]hexyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate (0.028 g, 42%). MS (ESI)
m/z 881.8 [M + H]+. 1H NMR (400 MHz, cd
3od) δ 8.45 – 8.33 (m, 1H), 8.02 – 7.94 (m, 1H),
7.91 – 7.75 (m, 2H), 7.72 – 7.67 (m, 1H), 7.61 (s, 1H), 7.59 – 7.34 (m, 6H), 7.09 – 6.91 (m,
2H), 5.62 – 5.38 (m, 2H), 5.29 (t, 1H), 5.24 – 5.09 (m, 3H), 4.61 (d, 1H), 4.37 – 4.26 (m, 1H),
3.83 – 3.73 (m, 1H), 3.69 – 3.56 (m, 6H), 3.50 – 3.40 (m, 1H), 3.20 – 3.11 (m, 1H), 2.99 (s,
1H), 2.83 (d, 1H), 2.63 – 2.50 (m, 2H), 2.47 – 2.34 (m, 2H), 2.29 – 2.13 (m, 2H), 2.10 – 1.95
(m, 2H), 1.37 – 1.23 (m, 3H), 1.19 – 1.10 (m, 1H), 1.03 – 0.78 (m, 7H).
Example PS
O H H F 1) HCl/dioxane
N N
Boc N
N N N Boc 2) MocVal, HATU
H H DIPEA, DMF
tert-butyl (2S,4S)(9-{2-[(2S,5S)(tertbutoxycarbonyl
)methylpyrrolidinyl]-1H-
imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)[(difluoromethoxy)methyl]pyrroli
dinecarboxylate
O O
HN O H H
O N N N
N N N
H H O
O NH
methyl {(2S)[(2S,5S)(5-{2-[(2S,4S)
[(difluoromethoxy)methyl]{(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}
idazolyl)methylpyrrolidinyl]methyloxobutan-
2-yl}carbamate
utyl (2S,4S)(9-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidinyl]-1H-
imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
uoromethoxy)methyl]pyrrolidinecarboxylate
This nd was made in an analogous manner to tert-butyl (2S,4S)[5-(2-
{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
xymethyl)pyrrolidinecarboxylate substituting (2S,5S)(tert-butoxycarbonyl)
methylpyrrolidinecarboxylic acid for the initial alkylation of 3-(2-bromoacetyl)-10,11-
dihydro-5H-dibenzo[c,g]chromen-8(9H)-one, and substituting (2S,4S)(tertbutoxycarbonyl
)((difluoromethoxy)methyl)pyrrolidinecarboxylic acid for the other
alkylation in the sequence. Reactions in the synthesis of tert-butyl (2S,4S)(9-{2-[(2S,5S)-
1-(tert-butoxycarbonyl)methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
[(difluoromethoxy)methyl]pyrrolidinecarboxylategave similar product yields as in the
synthesis of tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate. MS (ESI) m/z 772.03 [M +
H]+.
methyl {(2S)[(2S,5S)(5-{2-[(2S,4S)[(difluoromethoxy)methyl]{(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate
To a solution of tert-butyl (2S,4S)(9-{2-[(2S,5S)(tert-butoxycarbonyl)
methylpyrrolidinyl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)[(difluoromethoxy)methyl]pyrrolidinecarboxylate (0.081 g, 0.105
mmol) in a mixture of CH2Cl2 (1.05 mL) and MeOH (0.210 mL) was added HCl (4M in 1,4-
dioxane, 0.788 mL, 3.15 mmol). The solution was stirred at room temperature for 2 h and
concentrated to dryness.
The intermediate was ved in CH2Cl2 (1.05 mL). (S)(methoxycarbonylamino)-
3-methylbutanoic acid (0.040 g, 0.231 mmol) and DIPEA (0.055 mL, 0.315 mmol) were then
added to the solution. HATU (0.176 g, 0.462 mmol) was added and solution was allowed to
stir at room temp. Upon completion, the solution was diluted with DMF and concentrated.
The crude product was purified by ative HPLC (Gemini column, 10-45% 2O
with 0.1% TFA) and the desired fractions were combined. The solution was concentrated
until the aqueous layer ed and aqueous bicarbonate (sat.) was slowly added until the
solution was basic. The ing slurry was stirred at room temperature for 2h and filtered.
The resulting solid was dried in vacuo to provide methyl {(2S)[(2S,5S)(5-{2-[(2S,4S)-
4-[(difluoromethoxy)methyl]{(2S)[(methoxycarbonyl)amino]
methylbutanoyl}pyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol-
9-yl}-1H-imidazolyl)methylpyrrolidinyl]methyloxobutanyl}carbamate
(0.025 g, 27%). MS (ESI) m/z 886.1 [M + H]+. 1H NMR (400 MHz, cd
3od) δ 8.49 – 8.25
(m, 2H), 8.08 – 7.82 (m, 2H), 7.79 – 7.27 (m, 5H), 6.45 (t, 1H), 5.36 – 5.26 (m, 1H), 5.22 –
.07 (m, 3H), 4.78 – 4.49 (m, 2H), 4.45 – 4.19 (m, 3H), 4.16 – 4.05 (m, 2H), 3.99 – 3.92 (m,
1H), 3.85 – 3.71 (m, 2H), 3.66 (s, 3H), 2.88 – 2.70 (m, 2H), 2.69 – 2.49 (m, 2H), 2.42 – 2.26
(m, 2H), 2.23 – 2.10 (m, 2H), 2.07 – 1.87 (m, 3H), 1.51 (d, 2H), 1.34 – 1.20 (m, 2H), 1.17 –
0.76 (m, 12H).
Example PT
O H H
N N
Boc N 1) HCl/dioxane
N N N Boc
F H H
F 2) , HATU
O DIPEA, DMF
tert-butyl (2S,4S)(5-{2-[(2S,5S)(tert-butoxycarbonyl)-
ylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-
1H-imidazolyl)[(difluoromethoxy)methyl]pyrroli
dinecarboxylate
HN O H H
O N N N
N N N
F H H O
O NH
O O
methyl {(2S)[(2S,4S)[(difluoromethoxy)methyl](5-{2-[(2S,5S)
{(2S)[(methoxycarbonyl)amino]methylbutanoyl}
methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imida
zolyl}-1H-imidazolyl)pyrrolidinyl]methyloxobutan
yl}carbamate
methyl {(2S)[(2S,4S)[(difluoromethoxy)methyl](5-{2-[(2S,5S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
rolidinyl]methyloxobutanyl}carbamate
This compound was made in an analogous manner to tert-butyl (2S,4S)[5-(2-
{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate substituting (2S,4S)(tert-butoxycarbonyl)
((difluoromethoxy)methyl)pyrrolidinecarboxylic acid for the initial alkylation of 3-(2-
bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one, and substituting (2S,5S)
(tert-butoxycarbonyl)methylpyrrolidinecarboxylic acid for the other alkylation in the
sequence. Reactions in the synthesis of tert-butyl (2S,4S)(5-{2-[(2S,5S)(tert-
butoxycarbonyl)methylpyrrolidinyl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
azolyl}-1H-imidazolyl)[(difluoromethoxy)methyl]pyrrolidine
ylategave similar product yields as in the synthesis of tert-butyl (2S,4S)[5-(2-
{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate. MS (ESI) m/z 772.31 [M + H]+.
methyl {(2S)[(2S,4S)[(difluoromethoxy)methyl](5-{2-[(2S,5S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
rolidinyl]methyloxobutanyl}carbamate
To tert-butyl (2S,4S)(5-{2-[(2S,5S)(tert-butoxycarbonyl)methylpyrrolidin
yl]-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
uoromethoxy)methyl]pyrrolidinecarboxylate (0.057 g, 0.074 mmol) in a mixture of
CH2Cl2 (0.739 mL) and MeOH (0.148 mL) was added HCl (4M in 1,4-dioxane, 0.555 mL,
2.218 mmol). The solution was stirred at room temperature for 2 h and concentrated to
dryness.
The ediate was dissolved in CH2Cl2 (0.739 mL). (S)
(methoxycarbonylamino)methylbutanoic acid (0.028 g, 0.163 mmol) and DIPEA (0.039
mL, 0.222 mmol) were then added to the solution. HATU (0.124 g, 0.325 mmol) was added
and solution was allowed to stir at room temp. Upon completion, the solution was diluted
with DMF and concentrated. The crude product was purified by ative HPLC (Gemini
column, 10-46% MeCN/H2O with 0.1% TFA) and the desired fractions were combined and
lyophilized to provide methyl {(2S)[(2S,4S)[(difluoromethoxy)methyl](5-{2-
[(2S,5S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazol
yl)pyrrolidinyl]methyloxobutanyl}carbamate (0.011 g, 17%). MS (ESI) m/z
886.1 [M + H]+. 1H NMR (400 MHz, cd
3od) δ 8.67 – 8.51 (m, 1H), 8.26 – 8.11 (m, 1H), 8.04
– 7.75 (m, 3H), 7.69 – 7.58 (m, 2H), 6.43 (t, 1H), 5.41 – 5.15 (m, 4H), 4.48 – 3.90 (m, 6H),
3.82 (s, 1H), 3.71 – 3.57 (m, 5H), 3.53 – 3.43 (m, 1H), 3.20 – 3.01 (m, 2H), 2.92 – 2.63 (m,
3H), 2.60 – 2.25 (m, 4H), 2.15 – 1.86 (m, 4H), 1.57 (d, 3H), 1.24 (d, 2H), 1.07 (dd, 2H), 0.98
– 0.77 (m, 9H).
Example PU
utyl (2S,4S)[5-(2-{(2S,4S)(tert-butoxycarbonyl)
[(difluoromethoxy)methyl]pyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
This compound was made in an analogous manner to utyl (2S,4S)[5-(2-
{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate substituting (2S,4S)(tert-butoxycarbonyl)
(methoxymethyl)pyrrolidinecarboxylic acid for the initial alkylation of 3-(2-bromoacetyl)-
,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one, and substituting (2S,4S)(tertbutoxycarbonyl
)((difluoromethoxy)methyl)pyrrolidinecarboxylic acid for the other
tion in the sequence. Reactions in the synthesis of tert-butyl (2S,4S)[5-(2-{(2S,4S)-
1-(tert-butoxycarbonyl)[(difluoromethoxy)methyl]pyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate gave similar product yields as in the synthesis of
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate. MS (ESI) m/z 801.1 [M + H]+.
methyl {(2S)[(2S,4S)(5-{2-[(2S,4S)[(difluoromethoxy)methyl]{(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
xymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
To tert-butyl (2S,4S)[5-(2-{(2S,4S)(tert-butoxycarbonyl)
[(difluoromethoxy)methyl]pyrrolidinyl}-1,11 dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)-1H-imidazolyl](methoxymethyl)pyrrolidinecarboxylate (0.092 g,
0.115 mmol) in a mixture of CH2Cl2 (1.15 mL) and MeOH (0.230 mL) was added HCl (4M
in 1,4-dioxane, 0.862 mL, 3.446 mmol). The solution was stirred at room temperature for 2 h
and concentrated to s.
The intermediate was dissolved in CH2Cl2 (1.149 mL). (S)
(methoxycarbonylamino)methylbutanoic acid (0.044 g, 0.253 mmol) and DIPEA (0.060
mL, 0.345 mmol) were then added to the solution. HATU (0.192 g, 0.505 mmol) was added
and solution was d to stir at room temp. Upon completion, the solution was diluted
with DMF and concentrated. The crude product was purified by preparative HPLC (Gemini
column, 10-45% MeCN/H2O with 0.1% TFA) and the desired fractions were combined. The
solution was concentrated until the s layer remained and s bicarbonate (sat.)
was slowly added until the solution was basic. The resulting slurry was stirred at room
temperature for 2h and filtered. The resulting solid was dried in vacuo to provide methyl
{(2S)[(2S,4S)(5-{2-[(2S,4S)[(difluoromethoxy)methyl]{(2S)
[(methoxycarbonyl)amino]methylbutanoyl}pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate (0.042 g, 40%). MS
(ESI) m/z 916.30 [M + H]+. 1H NMR (400 MHz, cd
3od) δ 8.55 – 8.25 (m, 1H), 8.15 – 7.85
(m, 2H), 7.83 – 7.26 (m, 5H), 6.44 (t, 1H), 5.37 – 5.02 (m, 4H), 4.47 – 4.35 (m, 1H), 4.33 –
4.18 (m, 3H), 4.15 – 3.90 (m, 3H), 3.81 – 3.45 (m, 11H), 3.39 (s, 3H), 2.90 – 2.27 (m, 5H),
2.22 – 1.92 (m, 4H), 1.12 – 0.73 (m, 13H).
Example PX
(2S,4S)tert-butyl 2-methyl 4-((difluoromethoxy)methyl)pyrrolidine-1,2-dicarboxylate
A 100 mL bottom flask was d with (2S,4S)tert-butyl 2-methyl 4-
(hydroxymethyl)pyrrolidine-1,2-dicarboxylate (3.33 g, 12.84 mmol), CuI (0.489 g, 2.56
mmol), and anhydrous acetonitrile (57.1 mL). The reaction was heated to 45 °C (ext. oil
bath). 2,2-difluoro(fluorosulfonyl)acetic acid (2.655 mL, 25.68 mmol) was added at 45 °C
over 30 minutes via syringe pump. The reaction was heated for 30 minutes. Upon
completion as monitored by TLC, the on mixture was cooled to room temperature and
concentrated in vacuo. The crude residue was diluted in EtOAc and washed with sodium
bicarbonate (aq). The bicarbonate layer was back extracted with ethyl e twice.
Combined organic layers were washed with brine, dried over sodium sulphate, filtered and
concentrated. The resulting residue was further purified via silica gel tography (10 to
40 % EtOAc/Hexanes) to afford (2S,4S)tert-butyl 2-methyl 4-
((difluoromethoxy)methyl)pyrrolidine-1,2-dicarboxylate (2.41 g, 61%). MS (ESI) m/z 210.21
[M + H - Boc]+.
(2S,4S)(tert-butoxycarbonyl)((difluoromethoxy)methyl)pyrrolidinecarboxylic
acid
To a solution of (2S,4S)tert-butyl 2-methyl 4-
((difluoromethoxy)methyl)pyrrolidine-1,2-dicarboxylate (2.41 g, 7.79 mmol) in a mixture of
THF (39 mL) and MeOH (15.6 mL) was added LiOH (2.5 M aqueous, 15.6 mL, 38.9 mmol).
The resulting on was stirred at room temperature for 1h. Upon completion by TLC the
reaction mixture was acidified with aqueous HCl (1N). The desired product was extracted
with CH2Cl2 (3x). The combined organic layers were dried over Na2SO4 and trated to
provide (2S,4S)(tert-butoxycarbonyl)((difluoromethoxy)methyl)pyrrolidine
carboxylic acid (2.4 g, 99%). MS (ESI) m/z 294.96 [M - H]-. 1H-NMR: 400 MHz, (acetoned6
) δ (mixture of rotamers): 6.50 (t, 1H), 4.36-4.17 (m, 1H), 3.93 (d, 2H), 3.77-3.67 (m, 1H),
3.63-3.59 (m, 1H), 3.26-3.12 (m, 1H), 2.72-2.41 (m, 2H), 1.89-1.73 (m, 2H), 1.41 (s, 9H).
Example PY
Methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
A on of tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (150 mg, 0.19 mmol) in 1.25 N
HCl in EtOH (3 mL) was stirred ght then heated to 50 °C for 3h. The reaction was
concentrated and the crude material dissolved in DMF (2 mL). To this solution was added a
solution of (R)(methoxycarbonylamino)phenylacetic acid (52 mg, 0.25 mmol) and
COMU (90 mg, 0.21 mmol). To the resulting solution was added diisopropylethylamine
(0.099 mL, 0.57 mmol). After ng for 2h at room temperature, the reaction was quenched
with 1N HCl (0.200 mL) and purified by HPLC. After lyophilizati on, the TFA salt was
dissolved in EtOAc and washed with ted NaHCO3. The organic phase was dried over
Na2SO4 and concentrated. The free base was then dissolved in MeCN/H2O and lyophilized
to afford methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate (65 mg, 39%). SI+: calculated for C49H54N8O8:
882.4; observed : 884.1. Diagnostic peaks in NMR 'H NMR (CD3OD): 8.28 (s, 1H),
8.21 (s, 1H), 8.04 (s, 1H), .01 (m, 10H), 3.62 (s, 3H), 3.34 (s, 3H), 3.23 (s, 3H), 1.56
(d, 3H), 1.03 (d, 3H), 0.94 (d, 3H).
Example PY-1
9-bromo(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
To 3-(2-bromohydroxyethyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
(20.3g, 54.4 mmol) in DCM (365 mL) was added MeOH (22 mL) and pyridinium tribromide
(18.24 g, 57.0 mmol). After 2h, water was added (100mL) and after briefly ing the
layers split and the bottom organic layer was collected. The organic layer was then washed
with 1M HCl (100 mL) and the bottom organic layer containing 9-bromo(2-bromo
hydroxyethyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one was collected. 400 MHz
1H NMR (CDCl
3) 7.75 (d, J = 8.1 Hz, 1H), 7.68 (s, 1H), 7.61 (s, 1H), 7.42 (d, J = 7.5 Hz,
1H), 7.24 (s, 1H), 5.13 (s, 2H), 4.99-4.96 (m, 1H), 4.73 (dd, J = 4.1, 4.1 Hz, 1H), 3.69-3.66
(m, 1H), 3.58-3.53 (m, 1H), 3.35-3.27 (m, 1H), 2.96-2.90 (m, 1H), 2.58-2.44 (m, 2H), C-OH
not observed.
To 9-bromo(2-bromohydroxyethyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-
8(9H)-one (approx. 54.4 mmol) in DCM (365mL) was added sodium bicarbonate (5.45 g),
sodium bromide (6.14 g), TEMPO (16.55 mg) and water (60 mL). The solution was cooled
between 0-5 °C and 6% bleach (91.5 mL) was added. After 1h isopropyl alcohol (20 mL) was
added and the reaction mixture was warmed to room temperature. Agitation was stopped, the
layers separated and the lower organic layer was collected and concentrated removing
approximately 345 g of solvent. The slurry was filtered and the cake washed with 50 mL
water and then 50 mL DCM (pre-cooled to 5 °C). The solids were collected and dried under
vacuum to obtain 9-bromo(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-
8(9H)-one (18.6 g, 76% yield). 400 MHz 1H NMR (CDCl 3) δ 8.03-8.01 (m, 1H), 7.85 (d, J =
8.2 Hz, 1H), 7.82 (s, 1H), 7.71 (s, 1H), 7.67 (s, 1H), 5.19 (s, 2H), 4.74 (dd, J = 4.1, 4.1 Hz,
1H), 4.45 (s, 2H), 3.37-3.29 (m, 1H), .92 (m,1H), 2.59-2.46 (m, 2H); 100 MHz 13C
NMR (CDCl3) δ 190.4, 189.6, 154.2, 136.6, 134.1, 133.9, 132.9, 131.8, 129.3, 127.2, 125.6,
124.2, 123.3, 117.0, 68.1, 49.9, 31.8, 30.4, 25.5.
Example PY-2
o(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
A mixture of 3-(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
(2.58 g, 6.95 mmol), pyridinium tribromide (2.56 g, 8.0 mmol), dichloromethane (22mL) and
methanol (2.5mL) was stirred at about 20°C for 3 hours to obtain a . The precipitated
product was filtered , washed with dichloromethane (10mL) and dried in a vacuum oven at
40°C to give 9-bromo(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
(2.62 g, 84% . 400 MHz 1H NMR (CDCl 3) δ 8.03-8.01 (m, 1H), 7.85 (d, J = 8.2 Hz,
1H), 7.82 (s, 1H), 7.71 (s, 1H), 7.67 (s, 1H), 5.19 (s, 2H), 4.74 (dd, J = 4.1, 4.1 Hz, 1H), 4.45
(s, 2H), 3.37-3.29 (m, 1H), 2.99-2.92 (m,1H), 2.59-2.46 (m, 2H).
Example PY-3
O O
O TMS H O TFA, H2O
Cl TMS
PdCl2(MeCN)2, X-Phos 65 °C
K3PO4, MeCN, 65 °C
3-chloro-10,11-dihydro- 3-((trimethylsilyl)ethynyl)-
5H- 10,11-dihydro-5H-
dibenzo[c,g]chromen- dibenzo[c,g]chromen-8(9H)-
8(9H)-one one
O O
O O PyHBr3 O O
Me DCM, MeOH Br Br
°C
3-acetyl-10,11-dihydro- 9-bromo(2-bromoacetyl)-10,11-
5H- dihydro-5H-dibenzo[c,g]chromendibenzo
[c,g]chromen- 8(9H)-one
8(9H)-one
3-((trimethylsilyl)ethynyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
A 300 mL flask equipped with an overhead stirrer and a reflux condenser under an
atmosphere of nitrogen was charged with ro-10,11-dihydro-5H-dibenzo[c,g]chromen-
8(9H)-one (10.0g, 35.12 mmol), powdered anhydrous tripotassium ate (22.4 g, 105.4
mmol), XPhos (1.34 g, 2.81 mmol), and PdCl2(MeCN)2 (364 mg, 1.40 mmol). Acetonitrile
(140 mL) was added followed by tylene (18 mL, 141 mmol). The e was
heated to 65 °C. After 6h, the reaction was judged complete, and the mixture was cooled to
20 °C. The mixture was filtered through a fritted , and the filtercake was washed with
acetonitrile. The filtrate was concentrated to about 150 mL under reduced pressure and
extracted with heptane (50 mL, 3×100 mL). N-Acetyl cysteine (15 g) was added to the
acetonitrile phase, and the mixture was agitated for 5 h at 45 °C. The e was cooled to
ambient temperature, filtered through a fritted funnel, and the filtercake was washed with
acetonitrile. The filtrate was concentrated to about 120 mL under reduced pressure. Water
(120 mL) was added and the mixture was agitated for 40 minutes at 45 °C and then cooled to
ambient temperature. After 30 minutes the mixture was ed through a d funnel to
provide 3-((trimethylsilyl)ethynyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (4.07
g, 33.4% yield ) as a yellow solid: 400 MHz 1H NMR (CDCl 3) δ 7.65 (d, J = 8.1 Hz, 1H),
7.60 (s, 1H), 7.55 (s, 1H), 7.47 (dd, J = 8.1, 1.4 Hz, 1H), 7.27 (s, 1H), 5.06 (s, 2H), 2.95 (t, J
= 6.1 Hz, 2H), 2.67 – 2.59 (m, 2H), 2.18 – 2.08 (m, 2H), 0.26 (s, 9H).
3-acetyl-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
A 20 mL vial with stir bar was charged with 3-((trimethylsilyl)ethynyl)-10,11-
dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (850 mg, 2.44 mmol) and TFA (9.8 mL). The
on was heated to 65 °C. After 3 h, the reaction was judged complete. The mixture was
concentrated under reduced pressure; the resulting residue was taken up in CH2Cl2 and
loaded onto a prepacked 25g silica gel dge. The product was purified by
chromatography on a ked 80g silica gel column eluting with a solvent gradient from
5% to 85% EtOAc/hexanes. The product containing fractions were combined and
concentrated to provide 3-acetyl-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (616
mg, 86%): 400 MHz 1H NMR (CDCl 3) δ 8.00 – 7.94 (m, 1H), 7.81 (d, J = 8.2 Hz, 1H), 7.77
(s, 1H), 7.64 (s, 2H), 5.16 (s, 2H), 2.98 (t, J = 6.1 Hz, 2H), 2.69 – 2.64 (m, 2H), 2.63 (s, 3H),
2.21 – 2.09 (m, 2H).
9-bromo(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one
A 20 mL vial with a stir bar was charged with 3-acetyl-10,11-dihydro-5H-
dibenzo[c,g]chromen-8(9H)-one (100 mg, 0.366 mmol), 9:1 CH2Cl2/MeOH (3.4 mL) and
nium tribromide (246 mg, 0.769 mmol). The solution was heated to 35 °C. After 30
minutes, the reaction was judged complete. The mixture was cooled to ambient temperature,
diluted with EtOAc (50 mL) and tially washed with saturated aqueous Na2S2O3 (20
mL), 2% aqueous NaHCO3 (20 mL), water (20 mL), and brine (10 mL). The organic phase
was dried over MgSO4, filtered and concentrated under reduced pressure resulting in 9-
bromo(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (68 mg, 41%):
400 MHz 1H NMR (CDCl 3) δ 8.03 - 8.01 (m, 1H), 7.85 (d, J = 8.2 Hz, 1H), 7.82 (s, 1H), 7.71
(s, 1H), 7.67 (s, 1H), 5.19 (s, 2H), 4.74 (dd, J = 4.1, 4.1 Hz, 1H), 4.45 (s, 2H), 3.37-3.29 (m,
1H), 2.99 - 2.92 (m,1H), 2.59 - 2.46 (m, 2H).
Example PY-4
(2S, 5S)(2-(9-bromooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)
oxoethyl) 1-tert-butyl 5-methylpyrrolidine-1,2-dicarboxylate
o(2-bromoacetyl)-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-one (1.43
g, 3.17 mmol) was treated with a solution of (2S,5S)(tert-butoxycarbonyl)
methylpyrrolidinecarboxylic acid (800 mg, 3.49 mmol) in dichloromethane (14 mL) and
K2CO3 (658 mg, 1.18 mmol). The stirred reaction mixture was stirred at RT and d with
CH2Cl2 and extracted 3X. The organic phase was washed with brine, then dried over MgSO4,
filtered and concentrated under reduced pressure to afford ((2S,5S)(2-(9-bromooxo-
8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl)oxoethyl) 1-tert-butyl 5-
methylpyrrolidine-1,2-dicarboxylate (1.61 g, 84%).
This synthesis may be used to make a variety of compounds described herein,
ing the compound exemplified in PY.
Example PZ
Methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
Tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (100 mg, 0.13 mmol) in 1.25 N
HCl in EtOH (3 mL) was heated to 50 °C for 3h and then concentrated under reduced
pressure. The crude residue was treated with (S)(methoxycarbonylamino)
methylbutanoic acid (34 mg, 0.20 mmol), HATU (54 mg, 0.14 mmol) and DMF (1.3 mL),
then ylmorpholine (0.043 mL, 0.39 mmol) was added dropwise. After 3h, the e
was quenched with 1N HCl (0.100 mL) and then purified by HPLC to afford methyl {(2S)
[(2S,5S)(9-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}
(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate ( 91 mg, 82%).
LCMS-ESI+: calculated for C46H56N8O8: 848.4; observed [M+1]+: 850.2.
Example QA
1. HCl
O H
2. HATU, NMM, DMF
Boc N N N
N N N O
O O
H HO
N N O
O H O H
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl] (2S,3R)methoxy
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2- (methoxycarbonylamino)
azolyl)-1H-imidazolyl](methoxymethyl)pyrrolidine ic acid
carboxylate
O N O H
N N N
O N N N
O N
H O
methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2S,3S)methoxy
[(methoxycarbonyl)amino]butanoyl}(methoxymethyl)pyrrolidin
yl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate
Methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2S,3S)methoxy
[(methoxycarbonyl)amino]butanoyl}(methoxymethyl)pyrrolidinyl]-1H-imidazol
11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidin-
1-yl]methyloxobutanyl}carbamate
Tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl](methoxymethyl)pyrrolidinecarboxylate (119 mg, 0.15 mmol) in 1.25 N
HCl in EtOH (3 mL) was heated to 50 °C for 3h and then concentrated under reduced
pressure. The crude residue was treated with (2S,3R)methoxy
(methoxycarbonylamino)butanoic acid (43 mg, 0.23 mmol), HATU (63 mg, 0.17 mmol) and
DMF (2 mL), then N-methylmorpholine (0.050 mL, 0.45 mmol) was added dropwise. After 3
hr, the mixture was ed with 1N HCl (0.100 mL) and then purified by HPLC to afford
methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2S,3S)methoxy
[(methoxycarbonyl)amino]butanoyl}(methoxymethyl)pyrrolidinyl]-1H-imidazolyl}-
ihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate ( 76 mg, 59%).
LCMS-ESI+: calculated for C46H56N8O9: 864.4; observed [M+1]+: 866.1.
Example QB
1. HCl
Boc N 2. HATU, DIPEA
N Br O
H HO N O
(2S,4S)-tert-butyl 2-(5-bromo-1H- )
imidazolyl)methylpyrrolidine (methoxycarbonylamino)
carboxylate methylpentanoic acid
O NH O H
O O
N N N
N +
N O N
Br Boc
(2S,4S)-tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-
tetramethyl-1,3,2-dioxaborolanyl)- 1,11-
methyl (2S,3S)((2S,4S)(5-bromo-1H- dihydroisochromeno[4',3':6,7]naphtho[1,2-
imidazolyl)methylpyrrolidinyl) d]imidazolyl)pyrrolidinecarboxylate
methyloxopentanylcarbamate
Methyl (2S,3S)((2S,4S)(5-bromo-1H-imidazolyl)methylpyrrolidinyl)
methyloxopentanylcarbamate
(2S,4S)-tert-butyl 2-(5-bromo-1H-imidazolyl)methylpyrrolidinecarboxylate
(100 mg, 0.13 mmol) in 1.25 N HCl in EtOH (15 mL) was heated to 50 °C for 3h and then
concentrated under reduced pressure. The crude e was treated with (2S,3S)
(methoxycarbonylamino)methylpentanoic acid (625 mg, 3.30 mmol), HATU (1.05 g, 2.77
mmol) and DMF (10 mL), then DIPEA (1.33 mL, 7.62 mmol) was added dropwise. After 2h,
the mixture was poured into ted aqueous NaHCO3 and then extracted with EtOAc. The
c phase was washed successively with 5% aqueous LiCl and Brine. The organics were
dried over Na2SO4, ed and concentrated under reduced pressure. The crude residue was
purified by silica column chromatography (30 to 90% of 10%MeOH/EtoAc to Hexanes)
afforded methyl (2S,3S)((2S,4S)(5-bromo-1H-imidazolyl)methylpyrrolidinyl)-
3-methyloxopentanylcarbamate ( 932 mg, 81%).
Tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-alloisoleucyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]
(methoxymethyl)pyrrolidinecarboxylate
)-Tert-butyl 4-(methoxymethyl)(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)- 1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)pyrrolidine
carboxylate (856 mg, 1.4 mmol), methyl (2S,3S)((2S,4S)(5-bromo-1H-imidazolyl)-
4-methylpyrrolidinyl)methyloxopentanylcarbamate (932 mg, 2.1 mmol),
Pd(PPh3)4 (162 mg, 0.14 mmol), PdCl2(dppf)2 (102 mg, 0.14 mmol), and K2CO3 (2M in H2O,
2.31 mL, 4.62 mmol) were combined in DMSO (8 mL) and dioxanes (8 mL). The mixture
was degassed with bubbling Argon for 10 min then heated to 95 ˚C for 1h. After cooling, the
reaction mixture was diluted with EtOAc, and washed successively with saturated aqueous
NaHCO3 and brine. The organics were dried over Na2SO4, filtered and concentrated under
reduced pressure. The crude residue was ed by silica column chromatography (1% to
% MeOH/EtOAc) to afford tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-
L-alloisoleucyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxymethyl)pyrrolidine
carboxylate (701 mg, 62%).
Methyl {(1R)[(2S,4S)(9-{2-[(2S,4S){(2S,3R)[(methoxycarbonyl)amino]
pentanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
A solution of tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-
alloisoleucyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl](methoxymethyl)pyrrolidine
carboxylate (218 mg, 0.27 mmol) in 1.25 N HCl in EtOH (3 mL) was heated to 50 °C for 3h.
The reaction was concentrated and the crude material dissolved in DMF (3 mL). To this
solution was added a solution of (R)(methoxycarbonylamino)phenylacetic acid (73 mg,
0.35 mmol) and COMU (127 mg, 0.30 mmol). To the resulting solution was added
diisopropylethylamine (0.141 mL, 0.81 mmol). After stirring for 2h at room temperature, the
reaction was quenched with 1N HCl (0.200 mL) and purified by HPLC. After lization,
the TFA salt was dissolved in EtOAc and washed with ted NaHCO3. The organic
phase was dried over Na2SO4 and concentrated. The free base was then dissolved in
2O and lyophilized to afford methyl {(1R)[(2S,4S)(9-{2-[(2S,4S){(2S,3R)-
2-[(methoxycarbonyl)amino]methylpentanoyl}methylpyrrolidinyl]-1H-imidazol
yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]oxophenylethyl}carbamate
(121 mg, 50%). LCMS-ESI+: calculated for C50H56N8O8: 896.4; observed [M+1]+:
897.5.
Example QC
H O
O N O H
O N N 1. HCl
N N 2. HATU, NMM
N Boc
H O
N O
tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L- O
alloisoleucyl]methylpyrrolidinyl}-1H-imidazolyl)-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl] (S)
(methoxymethyl)pyrrolidinecarboxylate (methoxycarbonylamino)
butanoic acid
H O
O N O H
N N N
N N N
H O
methyl {(2S)[(2S,4S)(9-{2-[(2S,4S){(2S,3R)
[(methoxycarbonyl)amino]methylpentanoyl}methylpyrrolidinyl]-
1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)(methoxymethyl)pyrrolidinyl]methyl
oxobutanyl}carbamate
Methyl {(2S)[(2S,4S)(9-{2-[(2S,4S){(2S,3R)[(methoxycarbonyl)amino]
methylpentanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate
tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-alloisoleucyl]
pyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxymethyl)pyrrolidinecarboxylate (105 mg, 0.13 mmol) in 1.25
N HCl in EtOH (3 mL) was heated to 50 °C for 3h and then trated under reduced
pressure. The crude residue was treated with (S)(methoxycarbonylamino)
methylbutanoic acid (32 mg, 0.18 mmol), HATU (59 mg, 0.16 mmol) and DMF (1.3 mL),
then N-methylmorpholine (0.043 mL, 0.39 mmol) was added dropwise. After 3h, the mixture
was quenched with 1N HCl (0.100 mL) and then purified by HPLC to afford methyl {(2S)
[(2S,4S)(9-{2-[(2S,4S){(2S,3R)[(methoxycarbonyl)amino]methylpentanoyl}
methylpyrrolidinyl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)(methoxymethyl)pyrrolidinyl]methyloxobutanyl}carbamate (
80 mg, 71%).
LCMS-ESI+: calculated for C47H58N8O8: 862.4; observed [M+1]+: 864.2.
Example QD
Methyl {(2S,3R)[(2S,4S)(5-{2-[(2S,4S)[N-(methoxycarbonyl)-O-methyl-L-
allothreonyl](methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxopentanyl}carbamate
tert-butyl (2S,4S)[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-alloisoleucyl]
methylpyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxymethyl)pyrrolidinecarboxylate (105 mg, 0.13 mmol) in 1.25
N HCl in EtOH (3 mL) was heated to 50 °C for 3h and then concentrated under reduced
pressure. The crude residue was treated with (2S,3R)methoxy
xycarbonylamino)butanoic acid (35 mg, 0.18 mmol), HATU (59 mg, 0.16 mmol) and
DMF (1.3 mL), then ylmorpholine (0.043 mL, 0.39 mmol) was added dropwise. After
3 hr, the mixture was quenched with 1N HCl (0.100 mL) and then purified by HPLC to
afford methyl {(2S,3R)[(2S,4S)(5-{2-[(2S,4S)[N-(methoxycarbonyl)-O-methyl-L-
allothreonyl](methoxymethyl)pyrrolidinyl]-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl}-1H-imidazolyl)
methylpyrrolidinyl]methyloxopentanyl}carbamate ( 92 mg, 81%).
LCMS-ESI+: calculated for C47H58N8O9: 878.4; observed [M+1]+: 879.3.
e QE
Methyl {(3R)[(2S,4S)(9-{2-[(2S,4S){(2S,3R)[(methoxycarbonyl)amino]
methylpentanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
(methoxymethyl)pyrrolidinyl]methyloxopentanyl}carbamate
tert-butyl )[9-(2-{(2S,4S)[N-(methoxycarbonyl)-L-alloisoleucyl]
pyrrolidinyl}-1H-imidazolyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl](methoxymethyl)pyrrolidinecarboxylate (105 mg, 0.13 mmol) in 1.25
N HCl in EtOH (3 mL) was heated to 50 °C for 3h and then concentrated under reduced
pressure. The crude residue was treated with (2S,3S)(methoxycarbonylamino)
methylpentanoic acid (34 mg, 0.18 mmol), HATU (59 mg, 0.16 mmol) and DMF (1.3 mL),
then N-methylmorpholine (0.043 mL, 0.39 mmol) was added dropwise. After 3h, the mixture
was quenched with 1N HCl (0.100 mL) and then purified by HPLC to afford methyl {(3R)
[(2S,4S)(9-{2-[(2S,4S){(2S,3R)[(methoxycarbonyl)amino]methylpentanoyl}
methylpyrrolidinyl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)(methoxymethyl)pyrrolidinyl]methyloxopentanyl}carbamate (
98 mg, 86%).
LCMS-ESI+: calculated for N8O8: 876.5; observed [M+1]+: 878.2.
Example QF
O H Pd(PPh3)4,
O N N O O Pd(dppf)2Cl2, K2CO3
B N
O N N Br DME
O + N 85 °C
H N O
O (2S,4S)-tert-butyl 2-(5-bromo-1H-
methyl [(2S)methyl{(2S,5S)methyl[9- imidazolyl)methylpyrrolidine
,5-tetramethyl-1,3,2-dioxaborolanyl)- carboxylate
1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl]pyrrolidinyl}oxobutan
yl]carbamate
O N O H
N N N
N N N
H N O
methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2R)
[(methoxycarbonyl)amino]phenylacetyl}
methylpyrrolidinyl]-1H-imidazolyl}-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
-methylpyrrolidinyl]methyloxobutan
yl}carbamate
(2S,5S)tert-butyl 2-(3-chlorooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromen
yl) ylpyrrolidine-1,2-dicarboxylate
To a solution of ochloro-10,11-dihydro-5H-dibenzo[c,g]chromen-8(9H)-
one (1.41 g, 3.88 mmol) in MeCN (17 mL) was added (2S,5S)(tert-butoxycarbonyl)
methylpyrrolidinecarboxylic acid (980 mg, 4.27 mmol) and DIPEA (1.49 mL, 8.54 mmol).
After stirring for 18 h at 50 °C, the solution was diluted with EtOAc and washed successively
with 1N HCl, saturated aqueous NaHCO3 and brine. The organics were dried over Na2SO4,
filtered and concentrated under reduced pressure. The crude residue was purified by silica
column tography (10% to 30% EtOAc/hexanes) to afford (2S,5S)tert-butyl 2-(3-
chlorooxo-8,9,10,11-tetrahydro-5H-dibenzo[c,g]chromenyl) 5-methylpyrrolidine-1,2-
dicarboxylate (1.63 g, 81%).
(2S,5S)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-naphtho[c,g]chromeno[8,9-d]imidazol
yl)(methyl)pyrrolidinecarboxylate
(2S,5S)tert-butyl 2-(3-chlorooxo-8,9,10,11-tetrahydro-5H-
dibenzo[c,g]chromenyl) 5-methylpyrrolidine-1,2-dicarboxylate (1.63 g, 3.18 mmol) was
added toluene (30 mL), 2-methoxyethanol (3 mL), and ammonium acetate (3.68 g, 77.1
mmol) and the solution was heated to reflux overnight. The following morning, the solution
was cooled to rt and was diluted with EtOAc and washed successively with water, saturated
aqueous NaHCO3 and brine. The organics were dried over Na2SO4, ed and concentrated
under reduced pressure. The crude residue was ed by silica column chromatography
(40% to 80 % EtOAc/hexanes) to afford (2S,5S)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)methylpyrrolidinecarboxylate (1.13 g,
72%).
((2S,5S)-tert-butyl 2-(9-chloro-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)
methylpyrrolidinecarboxylate
To a solution of (2S,5S)-tert-butyl 2-(9-chloro-4,5-dihydro-5H-
naphtho[c,g]chromeno[8,9-d]imidazolyl)(methyl)pyrrolidinecarboxylate (1.13 g, 2.3
mmol) in CH2Cl2 (25 mL) was added MnO2 (9.98 g, 115 mmol). The reaction mixture was
stirred overnight then filtered over celite. The filter cake was washed with copious CH2Cl2
and MeOH, and the filtrate was concentrated under reduced pressure to afford the crude
product (2S,5S)-tert-butyl 2-(9-chloro-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)
methylpyrrolidinecarboxylate (931 mg, 83%).
Methyl {(2S)[(2S,5S)(9-chloro-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)methylpyrrolidinyl]methyloxobutanyl}carbamate
(2S,5S)-tert-butyl 2-(9-chloro-5H-naphtho[c,g]chromeno[8,9-d]imidazolyl)
pyrrolidinecarboxylate (931 mg, 1.9 mmol) in 1.25 N HCl in EtOH (8 mL) was
heated to 50 °C for 3h and then trated under reduced re. The crude residue was
treated with (S)(methoxycarbonylamino)methylbutanoic acid (499 mg, 2.9 mmol),
HATU (795 mg, 2.1 mmol) and DMF (10 mL), then N-methylmorpholine (0.627 mL, 5.7
mmol) was added dropwise. After stirring for 1 h, the reaction was diluted with EtOAc and
washed successively with saturated s NaHCO3, 5% LiCl, and brine. The organics were
dried over Na2SO4, filtered and trated under reduced pressure. The crude residue was
purified by silica column chromatography (50% to 100% EtOAc/hexanes) to afford methyl
{(2S)[(2S,5S)(9-chloro-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
methylpyrrolidinyl]methyloxobutanyl}carbamate (950 mg, 91%).
Methyl [(2S)methyl{(2S,5S)methyl[9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-
2-yl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl]pyrrolidinyl}
oxobutanyl]carbamate
To methyl {(2S)[(2S,5S)(9-chloro-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate (950 mg, 1.74 mmol) in dioxane (17 mL) was added
bis(pinacolato)diboron (662 mg, 2.61 mmol), KOAc (512 mg, 5.22 mmol), X-Phos (25 mg,
0.05 mmol), and Pd2dba3 (80 mg, 0.08 mmol). The on was degassed with N2 for 10
min, then heated to 90 °C for 16 h. The on was cooled to rt, diluted with EtOAc,
washed with ted aqueous , brine, dried with Na2SO4, and trated.
Purification by silica gel chromatography (30% to 75 % gradient using 5%MeOH/EtOAc to
Hexanes) to afford methyl [(2S)methyl{(2S,5S)methyl[9-(4,4,5,5-tetramethyl-
1,3,2-dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}oxobutanyl]carbamate (800 mg, 72%).
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidin-
2-yl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazol
yl]methylpyrrolidinecarboxylate
To a solution of [(2S)methyl{(2S,5S)methyl[9-(4,4,5,5-tetramethyl-1,3,2-
dioxaborolanyl)-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl]pyrrolidinyl}oxobutanyl]carbamate (269 mg, 0.42 mmol), (2S,4S)-tert-butyl 2-(5-
bromo-1H-imidazolyl)methylpyrrolidinecarboxylate (206 mg, 0.54 mmol),
tetrakis(triphenylphosphine) palladium(0) (49 mg, 0.042 mmol) and dichloro[1,1'-
bis(diphenylphosphino)ferrocene]palladium(II) (31 mg, 0.042 mmol) in DMSO (3 mL) and
dioxanes (3 mL) was added a solution of potassium ate (2M in water, 0.69 mL, 1.39
mmol). The resulting mixture was degassed and then heated to 95 °C for 2h. After cooling
to room temperature, the reaction was diluted with ethyl acetate. The organics were washed
with saturated sodium bicarbonate and brine, dried over Na2SO4 and concentrated. The crude
residue was purified by flash chromatography (1 to 20% MeOH/EtOAc) to yield tert-butyl
(2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-imidazolyl]
methylpyrrolidinecarboxylate (202 mg, 63%).
Methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
A solution of tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
pyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]methylpyrrolidinecarboxylate (80 mg, 0.11 mmol) in 1.25 N HCl in
EtOH (2 mL) was heated to 50 °C for 3h. The reaction was concentrated and the crude
material ved in DMF (1.5 mL). To this solution was added a solution of (R)
(methoxycarbonylamino)phenylacetic acid (29 mg, 0.14 mmol) and COMU (52 mg, 0.12
mmol). To the resulting solution was added diisopropylethylamine (0.057 mL, 0.33 mmol).
After stirring for 2h at room temperature, the reaction was ed with 1N HCl (0.200 mL)
and purified by HPLC. After lyophilization, the TFA salt was dissolved in EtOAc and
washed with saturated NaHCO3. The organic phase was dried over Na2SO4 and
concentrated. The free base was then dissolved in MeCN/H2O and lyophilized to afford
methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2R)[(methoxycarbonyl)amino]
phenylacetyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
oisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate: (42 mg, 45%). LCMS-ESI+: calculated for C48H52N8O7:
852.4; observed [M+1]+: 854.2.
e QG
O H
Boc 1. HCl
N N N
N N N 2. HATU,
O NMM
H O
H N O HO N O
O O H
(S)
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-
(methoxycarbonylamino)
(methoxycarbonyl)-L-valyl]methylpyrrolidinyl}-1,11-
methylbutanoic acid
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-
1H-imidazolyl]methylpyrrolidinecarboxylate
O N O H
N N N
N N N
H N O
methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2S)
[(methoxycarbonyl)amino]methylbutanoyl}
methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazol
yl)methylpyrrolidinyl]methyloxobutan
yl}carbamate
Methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]
methylbutanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
tert-butyl )[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]methylpyrrolidinecarboxylate (60 mg, 0.079 mmol) in 1.25 N HCl in
EtOH (2 mL) was heated to 50 °C for 3h and then concentrated under reduced pressure. The
crude residue was treated with (S)(methoxycarbonylamino)methylbutanoic acid (21
mg, 0.12 mmol), HATU (36 mg, 0.095 mmol) and DMF (1.5 mL), then N-methylmorpholine
(0.027 mL, 0.24 mmol) was added dropwise. After 3h, the mixture was quenched with 1N
HCl (0.100 mL) and then purified by HPLC to afford methyl {(2S)[(2S,5S)(9-{2-
[(2S,4S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}methylpyrrolidinyl]-
dazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
pyrrolidinyl]methyloxobutanyl}carbamate ( 33 mg, 51%).
LCMS-ESI+: calculated for C45H54N8O7: 818.4; observed [M+1]+: 820.2.
Example QH
O H 1. HCl
BocN N N 2. HATU, NMM, DMF
N N N (2S,3R)methoxy
H (methoxycarbonylamino)butanoic acid
H O
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-
valyl]methylpyrrolidinyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
olyl]methylpyrrolidinecarboxylate
O N O H
N N N
O N N N
H O
methyl {(2S)[(2S,5S)(9-{2-[(2S,4S){(2S,3R)
methoxy[(methoxycarbonyl)amino]butanoyl}
pyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)
methylpyrrolidinyl]methyloxobutanyl}carbamate
Methyl 1-[(2S,5S)(9-{2-[(2S,4S){(2S,3R)methoxy
[(methoxycarbonyl)amino]butanoyl}methylpyrrolidinyl]-1H-imidazolyl}-1,11-
dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)methylpyrrolidinyl]
methyloxobutanyl}carbamate
tert-butyl (2S,4S)[5-(2-{(2S,5S)[N-(methoxycarbonyl)-L-valyl]
methylpyrrolidinyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-d]imidazolyl)-1H-
imidazolyl]methylpyrrolidinecarboxylate (20 mg, 0.079 mmol) in 1.25 N HCl in
EtOH (2 mL) was heated to 50 °C for 3h and then concentrated under d pressure. The
crude residue was treated with (2S,3R)methoxy(methoxycarbonylamino)butanoic acid
(8 mg, 0.04 mmol), HATU (12 mg, 0.03 mmol) and DMF (0.5 mL), then N-
methylmorpholine (0.009 mL, 0.078 mmol) was added dropwise. After 3h, the mixture was
quenched with 1N HCl (0.100 mL) and then purified by HPLC to afford methyl {(2S)
[(2S,5S)(9-{2-[(2S,4S){(2S)[(methoxycarbonyl)amino]methylbutanoyl}
methylpyrrolidinyl]-1H-imidazolyl}-1,11-dihydroisochromeno[4',3':6,7]naphtho[1,2-
d]imidazolyl)methylpyrrolidinyl]methyloxobutanyl}carbamate ( 7.5 mg,
%).
LCMS-ESI+: calculated for C45H54N8O8: 834.4; observed [M+1]+: 835.7.
Compounds 478-647
Using procedures similar to those described herein, the following compounds of the
disclosure were ed.
# Compound LCMS (observed
(M+H)+)
478 879.4
493 838.2
494 837.3
495 835.73
498 835.34
499 823.35
503 837.35
507 865.32
510 880.0
516 836.04
518 803.2
526 806.11
536 838.29
588 842.10
602 847.99
603 822.02
617 854.19
626 885.80
643 878.15
O H O H H
646 N O N N
O N O 881.66
N N O
O H O
BIOLOGICAL ASSAYS
Effect of serum proteins on replicon potency: on assays are conducted in
normal cell culture medium (DMEM + 10%FBS) supplemented with logic
concentrations of human serum n (40 mg/mL) or α-acid glycoprotein (1 mg/mL).
EC50s in the presence of human serum proteins are compared to the EC50 in normal medium
to determine the fold shift in potency.
MT-4 Cell Cytotoxicity: MT4 cells are treated with serial dilutions of compounds
for a five day period. Cell viability is measured at the end of the treatment period using the
Promega CellTiter-Glo assay and non-linear regression is performed to calculate CC50.
Compound Concentration ated with Cells at EC50: Huh-luc cultures are
incubated with compound at concentrations equal to EC50. At multiple time points (0 – 72
, cells are washed 2X with cold medium and extracted with 85% acetonitrile; a sample
of the media at each time-point will also be extracted. Cell and media ts are analyzed
by LC/MS/MS to determine the Molar concentration of compounds in each on.
Representative compounds of the disclosure have shown ty.
Solubility and Stability: Solubility is determined by taking an aliquot of 10 mM
DMSO stock solution and preparing the compound at a final concentration of 100 µM in the
test media solutions (PBS, pH 7.4 and 0.1 N HCl, pH 1.5) with a total DMSO concentration
of 1%. The test media solutions are incubated at room temperature with shaking for 1 hr.
The solutions will then be centrifuged and the recovered supernatants are assayed on the
HPLC/UV. Solubility will be calculated by comparing the amount of compound detected in
the defined test on ed to the amount detected in DMSO at the same
concentration. Stability of compounds after an 1 hour incubation with PBS at 37°C will also
be determined.
Stability in eserved Human, Dog, and Rat Hepatocytes: Each compound
is incubated for up to 1 hour in hepatocyte suspensions (100 µl, 80,000°Cells per well) at
37°C. Cryopreserved hepatocytes are reconstituted in the serum-free incubation medium.
The suspension is transferred into 96-well plates (50 µL/well). The compounds are diluted to
2 µM in incubation medium and then are added to hepatocyte suspensions to start the
incubation. Samples are taken at 0, 10, 30 and 60 minutes after the start of incubation and
on will be quenched with a mixture consisting of 0.3% formic acid in 90%
acetonitrile/10% water. The concentration of the compound in each sample is analyzed using
LC/MS/MS. The disappearance half-life of the nd in hepatocyte suspension is
determined by fitting the concentration-time data with a monophasic exponential equation.
The data will also be scaled up to represent intrinsic hepatic clearance and/or total hepatic
clearance.
Stability in Hepatic S9 Fraction from Human, Dog, and Rat: Each compound is
incubated for up to 1 hour in S9 suspension (500 µl, 3 mg protein/mL) at 37°C (n = 3). The
compounds are added to the S9 suspension to start the incubation. Samples are taken at 0, 10,
, and 60 minutes after the start of incubation. The concentration of the compound in each
sample is analyzed using MS. The disappearance half-life of the compound in S9
suspension is determined by fitting the concentration-time data with a monophasic
ntial equation.
Caco-2 Permeability: Compounds are assayed via a contract service (Absorption
Systems, Exton, PA). nds are provided to the contractor in a blinded manner. Both
forward (A-to-B) and reverse A) permeability will be measured. Caco-2 monolayers
are grown to ence on collagen-coated, microporous, polycarbonate membranes in 12-
well Costar TRANSWELL® plates. The compounds are dosed on the apical side for forward
permeability B), and are dosed on the basolateral side for reverse permeability (B-to-
A). The cells are ted at 37°C with 5% CO2 in a humidified incubator. At the
beginning of incubation and at 1 hr and 2 hr after incubation, a 200-µL aliquot is taken from
the receiver chamber and replaced with fresh assay buffer. The concentration of the
nd in each sample is determined with LC/MS/MS. The apparent permeability, Papp,
is calculated.
Plasma Protein Binding: Plasma protein binding is measured by equilibrium
dialysis. Each compound is spiked into blank plasma at a final concentration of 2 µM. The
spiked plasma and phosphate buffer is placed into opposite sides of the assembled dialysis
cells, which will then be d slowly in a 37°C water bath. At the end of the incubation,
the concentration of the compound in plasma and phosphate buffer is determined. The
percent unbound is calculated using the following equation:
C
% Unbound = 100 f
Cb C
Where Cf and Cb are free and bound concentrations determined as the post-dialysis
buffer and plasma concentrations, respectively.
CYP450 Profiling: Each nd is incubated with each of 5 recombinant human
CYP450 enzymes, ing CYP1A2, CYP2C9, CYP3A4, CYP2D6 and CYP2C19 in the
presence and absence of NADPH. Serial samples will be taken from the incubation mixture
at the beginning of the incubation and at 5, 15, 30, 45 and 60 minutes after the start of the
tion. The concentration of the compound in the incubation mixture is determined by
LC/MS/MS. The percentage of the compound ing after incubation at each time point
is calculated by comparing with the sampling at the start of incubation.
Stability in Rat, Dog, Monkey and Human Plasma: Compounds will be ted
for up to 2 hours in plasma (rat, dog, , or human) at 37°C. Compounds are added to
the plasma at final concentrations of 1 and 10 µg/mL. Aliquots are taken at 0, 5, 15, 30, 60,
and 120 s after adding the compound. Concentration of compounds and major
metabolites at each time point are measured by LC/MS/MS.
Evaluation of ased anti-HCV activity: Antiviral potency (EC50) was
determined using a Renilla rase -based HCV replicon reporter assay. To
perform the assay for pe 1 and 2a JFH-1, stable HCV 1a RLuc replicon cells
(harboring a dicistronic genotype 1a H77 replicon that encodes a RLuc reporter), stable HCV
1b RLuc replicon cells (harboring a dicistronic genotype 1b Con1 on that encodes a
RLuc reporter), or stable HCV 2a JFH-1 Rluc replicon cells (harboring a dicistronic genotype
2a JFH-1 replicon that encodes a RLuc reporter; with L31 present in NS5A) were dispensed
into 384-well plates for EC50 assays. To perform the assay for genotype 2a (with M31 present
in NS5A) or 2b, NS5A chimeric genotype 2a JFH-1 replicons that encodes a RLuc-Neo
reporter and either genotype 2a J6 strain NS5A gene or genotype 2b MD2b-1 strain NS5A
gene (both with M31 present) respectively, were either transiently transfected (t) into Huh-
Lunet cells or were established as stably replicating replicon cells (s) is provided. Either cells
were dispensed into 384-well plates for EC50 assays. To perform the assay for genotype 3 and
4, NS5A chimeric genotype 1b Con1 replicons that encodes a Pi-RLuc reporter and either
genotype 3a S52 strain NS5A gene or genotype 4a ED43 strain NS5A gene respectively,
were ently transfected (t) into Huh-Lunet cells, which were uently dispensed into
384-well plates. Compounds were dissolved in DMSO at a concentration of 10 mM and
diluted in DMSO either manually or using an automated pipeting instrument. Serially 3-fold
diluted compounds were either manually mixed with cell culture media and added to the
seeded cells or directly added to the cells using an automated instrument. DMSO was used as
a negative (solvent; no inhibition) control, and the protease inhibitor ITMN-191 was included
at a concentration > 100 x EC50 as a positive control. 72 hours later, cells were lysed and
a luciferase activity quantified as recommended by the manufacturer (Promega-
Madison, WI). near regression was performed to calculate EC50 values.
To determine the ral potency (EC50) against resistance mutants, resistance
mutations, ing M28T, Q30R, Q30H, L31M, and Y93C in genotype 1a NS5A and
Y93H in pe 1b NS5A, were introduced individually into either 1a Pi-Rluc or 1b Pi-
Rluc replicons by site directed mutagenesis. Replicon RNA of each resistant mutant was
transiently transfected into Huhderived 51 cells and antiviral y was
determined on these transfected cells as described above.
The EC50 ranges for genotype 1a, 1a Q30R, and 2a JFH are as follows: A ≥ 44 nM, B
= 1 nM to 43.99 nM, C < 1 nM. The EC50 ranges for genotype 2a J6, 2b, 3a, and 4a are as
follows: A ≥ 5 nM, B = 1 nM to 4.99 nM, C < 1 nM. The EC50 ranges for genotype 2a J6, 2b,
and 4a correspond to the assay of transiently transfected cells (t). If this data is unavailable,
the EC50 range for the stably replicating cells (s) is provided.
IV and PO Single Dose Pharmacokinetic Studies in SD Rats: The
cokinetics of selected compounds was terized in male Sprague-Dawley (SD)
rats (250-300g). In this study, two groups of naïve purebred SD rats (N=3 per group, fasted
over night) received the selected compound either as an enous (IV) infusion (1 mg/kg
over 30 minutes) via the jugular vein or by oral gavage (2 mg/kg). The intravenous (IV)
dosing vehicle was 5% ethanol, 35% polyethylene glycol 400 (PEG 400) and 60% water pH
2.0. The oral dosing vehicle was 5% ethanol, 55% PEG 400 and 40% citrate buffer pH 2.2.
Serial blood samples (approximately 0.3 mL each) were collected from jugular vein
or other suitable vein at specified time points. For the IV infusion group, the blood samples
were collected predose and at 0.25, 0.48, 0.58, 0.75, 1.5, 3, 6, 8, 12 and 24 hours after the
start of infusion. For the oral group, the blood samples were collected predose and at 0.25,
0.50, 1, 2, 4, 6, 8, 12 and 24 hours after dosing. The blood samples were collected into
iner tubes containing EDTA-K3 as the anti-coagulant and were centrifuged at
approximately 4ºC to obtain plasma. The plasma samples were stored at -20ºC until analysis
by LC/MS/MS.
A bioanalytical method utilizing high performance liquid chromatography coupled to
tandem mass spectrometry (LC/MS/MS) was developed for analysis of the selected
nd in rat plasma. Detection was performed using selected reaction monitoring
(SRM); Ions representing the precursor (M+H)+ species was selected in quadrupole 1 (Q1)
and collided with argon gas in the collision cell (Q2) to generate specific product ion, which
was subsequently monitored by quadrupole 3 (Q3). Standard curve and quality l
samples were prepared in male rat plasma and processed in the same way as the test samples
to te quantitative data.
Pharmacokinetic parameters were ted using non-compartmental
pharmacokinetic analysis (Phoenix WinNonlin, version 6.3). Values below the lower limit of
quantification (LLOQ) were assigned a value of zero if predose and treated as missing
thereafter. Area under the curve (AUC) was calculated using the linear oidal rule. The
oral bioavailability (%F) was determined by comparison of the area under the curve (AUC)
of the compound and/or a metabolite generated in plasma following oral stration to
that generated ing intravenous administration.
# e 1b 1a 1a 2a 2a 2b 3a 4a 1a 1a 2a 2a J6 2a J6 2b (t) 2b (s) 3a 4a (t) 4a (s) Rat %F
No. (nM) Q30R JFH J6 (nM) Q30R JFH (t) (s) (nM) (nM) (nM) (nM) (nM)
(nM) (nM) (nM) (nM)
422 MC 0.017 C C C B C C C 0.016 0.990 0.004 1.155 3.523 0.162 0.375 0.004 0.008 0.028
423 LQ 0.020 C C C C C C C 0.022 0.135 0.004 0.134 0.543 0.012 0.035 0.005 0.008 0.02
426 MD 0.033 C C C C C C C 0.035 0.192 0.006 0.073 0.439 0.016 0.038 0.006 0.011 0.035
427 ME 0.049 C B C B C C C 0.033 2.514 0.012 3.428 16.075 0.198 0.701 0.015 0.016 0.029
434 MG 0.055 C C C C C C C 0.054 0.663 0.012 0.337 2.288 0.070 0.010 0.024 0.08
435 MF 0.058 C C C C C C C 0.059 0.768 0.012 0.476 2.136 0.083 0.011 0.025
478 478 0.048 C C B C C C 0.045 0.011 3.654 0.820 0.065 0.023 0.019
493 493 0.030 C C A C C C 0.036 0.008 5.036 0.650 0.050 0.013 0.018
494 494 0.021 C C C C C C C 0.037 0.118 0.005 0.098 0.017 0.005 0.017 0.031
495 495 0.026 C C C C C C C 0.021 0.201 0.008 0.280 1.016 0.135 0.541 0.024 0.014 0.014
498 498 0.016 C C C C C C C 0.030 0.040 0.004 0.012 0.039 0.010 0.013 0.005 0.011 0.004
499 499 0.032 C C C C C C 0.057 0.008 0.206 0.040 0.010 0.021 0.005
503 503 0.041 C C C C C C 0.062 0.012 0.155 0.037 0.016 0.028 0.025
507 507 1.503 B C A B C C 3.698 0.297 20.096 1.561 0.382 0.594 0.025
510 510 0.050 C C C C C C 0.021 0.009 0.007 0.018 0.017 0.020 0.008 0.016 0.072
516 516 0.024 C C C C C C 0.015 0.009 0.043 0.013 0.005 0.010 0.025
518 518 0.010 C C B C C C 0.005 0.006 2.493 0.643 0.005 0.004 0.011
526 526 0.018 C C C C C C C 0.011 0.095 0.007 0.443 1.639 0.132 0.404 0.018 0.011 0.011
536 536 0.013 C C C C C C C 0.008 0.048 0.004 0.040 0.154 0.011 0.037 0.009 0.005 0.01
538 LR-1 0.016 C C C C C C C 0.011 0.015 0.005 0.018 0.048 0.010 0.024 0.013 0.010 0.012
539 LT 0.016 C C C C C C C 0.009 0.010 0.004 0.010 0.047 0.009 0.039 0.012 0.015 0.009
543 MY 0.015 C C C C C C C 0.016 0.024 0.005 0.047 0.165 0.016 0.047 0.010 0.008 0.02
544 MM 0.026 C C C C C C C 0.022 0.044 0.007 0.018 0.064 0.015 0.042 0.020 0.017 0.016
551 OQ 0.018 C C C C C C C 0.015 0.102 0.007 0.378 1.492 0.265 0.982 0.048 0.020 0.016
552 OR 0.033 C C C C C C C 0.030 0.059 0.011 0.068 0.160 0.037 0.109 0.031 0.036 0.006
555 MN 0.021 C C C C C C C 0.014 0.018 0.008 0.017 0.071 0.013 0.040 0.034 0.024 0.007 1.5
556 MS 0.008 C C A A C 0.008 0.005 15.564 9.562 0.014 0.02
558 PQ 0.014 C C C C C C 0.014 0.106 0.005 0.025 0.155 0.032 0.057 0.015 0.017
561 MP 0.010 C C C C C C C 0.006 0.031 0.004 0.039 0.336 0.032 0.184 0.015 0.015 0.013 24.2
562 MO 0.019 C C C C C C C 0.013 0.052 0.007 0.089 0.471 0.137 0.427 0.051 0.022 0.018 7.46
563 MT 0.007 C C A A B C 0.003 0.021 44.444 44.444 1.092 0.015 0.025
565 NB 0.017 C C C C C C C 0.010 0.034 0.004 0.020 0.138 0.007 0.039 0.011 0.023 0.025
566 NC 0.009 C C C C C C C 0.007 0.060 0.005 0.089 0.762 0.068 0.191 0.014 0.011 0.026
569 ND 0.024 C C C C C C C 0.020 0.057 0.014 0.314 2.338 0.270 1.319 0.035 0.031 0.044
571 OO 0.114 C C C C C C C 0.072 0.139 0.015 0.028 0.259 0.020 0.076 0.028 0.086 0.018
572 PF 0.044 C C C C C C C 0.032 0.034 0.014 0.025 0.127 0.023 0.117 0.072 0.050 0.018 4.3
573 PG 0.030 C C C C C C C 0.033 0.043 0.018 0.045 0.335 0.027 0.119 0.050 0.063 0.008
574 PN 0.016 C C C C C C C 0.015 0.030 0.009 0.027 0.277 0.014 0.035 0.016 0.014 0.02
575 PP 0.029 C C C C C C C 0.014 0.043 0.011 0.061 0.403 0.038 0.110 0.019 0.027 0.011
576 PO 0.014 C C B C C C 0.013 0.011 3.135 0.470 0.012 0.013 0.013
579 OI 0.034 C C C C C C C 0.024 0.086 0.010 0.061 0.326 0.178 0.629 0.206 0.036 0.007
580 OJ 0.017 C C C C C C 0.018 0.013 0.502 0.813 0.259 0.026 0.017
582 NF 0.010 C C C C C C C 0.011 0.017 0.006 0.031 0.218 0.018 0.064 0.017 0.009 0.012
585 NG 0.009 C C C C C C C 0.006 0.243 0.010 0.370 1.672 0.063 0.135 0.020 0.008
587 MR 0.041 C C C C C C C 0.028 0.128 0.017 0.079 0.176 0.039 0.053 0.078 0.045
588 588 0.017 C C C C C C C 0.012 0.087 0.004 0.038 0.140 0.012 0.017 0.027 0.019
589 MQ 0.011 C C C C C C C 0.008 0.023 0.004 0.017 0.095 0.009 0.023 0.016 0.011
590 MU 0.014 C C C C C C C 0.008 0.023 0.004 0.013 0.046 0.009 0.025 0.017 0.011
592 NI 0.015 C C C C C C C 0.015 0.059 0.007 0.026 0.169 0.019 0.054 0.022 0.020 24.1
594 NP 0.013 C C C C C C C 0.014 0.032 0.007 0.010 0.096 0.011 0.043 0.020 0.028 26.1
597 NJ 0.005 C C C C C C C 0.007 0.025 0.007 0.099 0.939 0.094 0.416 0.019 0.017
599 PY 0.009 C C C C C C C 0.012 0.013 0.006 0.009 0.098 0.007 0.030 0.017 0.018 27.7
600 PZ 0.007 C C C C C C 0.009 0.057 0.005 0.175 1.712 0.071 0.386 0.025
601 MV 0.014 C C C C C C C 0.010 0.012 0.004 0.047 0.034 0.041 0.011 0.011
602 602 0.025 C C C C C 0.025 0.010 0.053 0.036 0.036 0.013
603 603 0.015 C C C C C C C 0.009 0.146 0.007 0.194 0.067 0.088 0.015 0.022
604 NR 0.020 C C C C C 0.026 0.006 0.118 0.017 0.017 0.007
605 NQ 0.015 C C C C C C 0.017 0.039 0.006 0.064 0.013 0.012 0.013
606 OK 0.034 C C C C C C 0.026 0.039 0.011 0.076 0.036 0.045 0.028
607 OL 0.067 C C C C 0.047 0.012 0.070 0.052 0.052
608 OH 0.017 C C C C C C 0.016 0.031 0.007 0.054 0.023 0.022 0.026 22.7
609 QF 0.005 C C C C C C 0.008 0.032 0.004 0.053 0.015 0.011 0.020
610 QA 0.013 C C C C C C 0.012 0.045 0.007 0.094 0.052 0.040 0.038 7.46
612 QH 0.005 C C C C C C 0.007 0.051 0.005 0.182 0.051 0.049 0.020
613 QG 0.005 C C C C C C 0.005 0.071 0.004 0.551 0.065 0.043 0.016
614 OP 0.013 C C C C C C 0.013 0.026 0.008 0.018 0.011 0.007 0.027 15.1
615 OM 0.019 C C C C C C 0.014 0.035 0.009 0.045 0.053 0.054 0.035 12.2
617 617 0.005 C C C C C C 0.009 0.024 0.004 0.032 0.013 0.011 0.019 14.4
618 OT 0.020 C C C C C C 0.011 0.041 0.005 0.013 0.012 0.024
619 OF 0.007 C C C C 0.010 0.008 0.445 0.196
620 NK 0.081 C C C C 0.049 0.018 0.056 0.154
621 NL 0.013 C C C C 0.011 0.007 0.043 0.034
622 NM 0.016 C C C C C C 0.011 0.028 0.006 0.012 0.013 0.024 6.93
623 ON 0.006 C C C C 0.005 0.004 0.068 0.086
625 PH 0.031 C C C C C C 0.024 0.051 0.014 0.055 0.042 0.029
626 626 0.030 C C C C C C 0.021 0.041 0.009 0.021 0.021 0.027
627 PI 0.039 C C C C C C 0.031 0.094 0.020 0.129 0.090 0.065 8.7
628 OG 0.009 C C C C 0.009 0.008 0.601 0.437
631 PS 0.006 C C C C A 0.005 0.004 0.077 0.113 44.444
632 PT 0.008 C C C C 0.007 0.007 0.383 0.182
633 PR 0.020 C C C C C C 0.013 0.045 0.007 0.022 0.028 0.018
634 PU 0.015 C C C C 0.012 0.006 0.068 0.442
635 OU 0.041 C C C C 0.047 0.016 0.040 0.035
636 OV 0.011 C C C C C C 0.010 0.031 0.007 0.113 0.046 0.013
637 OW 0.009 C C C C C C 0.009 0.019 0.006 0.009 0.008 0.013 13.3
638 OX 0.009 C C C C 0.007 0.006 0.113 0.107
639 QB 0.011 C C C C C C 0.011 0.029 0.008 0.021 0.022 0.028 9.56
640 QE 0.015 C C C C 0.013 0.011 0.291 0.563
641 QD 0.030 C C C C 0.025 0.013 0.103 0.193
642 QC 0.014 C C C C 0.012 0.008 0.157 0.317
643 643 0.015 C C C C 0.015 0.013 0.206 0.607
644 MW 0.026 C C C C C 0.012 0.012 0.020 0.043 0.123 0.011
645 MX 0.076 C C C C C 0.036 0.024 0.035 0.070 0.139 0.033
646 646 0.109 C C C C C 0.058 0.030 0.042 0.112 0.262 0.034
648 PJ 0.088 C C C C C 0.068 0.058 0.136 0.335 0.854 0.056
1001946297
Claims (16)
1. A nd of formula: 6297 6297 6297 6297 6297 6297 6297 or a pharmaceutically acceptable salt thereof.
2. A compound of formula: 6297 6297 6297 6297 6297 6297 1001946297
3. A pharmaceutical composition comprising the compound or pharmaceutically acceptable salt thereof according to claim 1 and at least one pharmaceutically acceptable r.
4. The pharmaceutical ition according to claim 3, r comprising a nucleoside or 5 nucleotide inhibitor of NS5B rase.
5. Use of a nd or pharmaceutically acceptable salt thereof according to claim 1 in the manufacture of a medicament for the treatment of hepatitis C.
6. Use of a compound or pharmaceutically acceptable salt thereof according to claim 5, wherein the medicament is combined with a nucleoside or nucleotide inhibitor of HCV NS5B 10 polymerase.
7. A pharmaceutical composition comprising a compound according to claim 2 and at least one pharmaceutically acceptable carrier.
8. A pharmaceutical composition according to claim 7, further sing a nucleoside or nucleotide inhibitor of NS5B polymerase. 15
9. Use of a compound according to claim 2 in the manufacture of a medicament for the treatment of hepatitis C.
10. Use of a compound according to claim 9, wherein the medicament is combined with a nucleoside or nucleotide inhibitor of HCV NS5B polymerase. 1001946297
11. Use of a pharmaceutical composition according to claim 3 or claim 4, in the manufacture of a medicament for the treatment of hepatitis C.
12. Use of a pharmaceutical composition according to claim 7 or claim 8, in the manufacture of a medicament for the ent of hepatitis C. 5
13. A compound according to claim 1, substantially as herein described.
14. A compound according to claim 2, substantially as herein described.
15. A pharmaceutical composition according to claim 3 or 7, substantially as herein described.
16. Use ing to claim 5 or 9, ntially as herein described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ737924A NZ737924B2 (en) | 2011-11-16 | 2012-11-16 | Condensed imidazolylimidazoles as antiviral compounds |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161560654P | 2011-11-16 | 2011-11-16 | |
| US61/560,654 | 2011-11-16 | ||
| NZ610525A NZ610525B2 (en) | 2011-11-16 | 2012-11-16 | Condensed imidazolylimidazoles as antiviral compounds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ720856A NZ720856A (en) | 2017-12-22 |
| NZ720856B2 true NZ720856B2 (en) | 2018-03-23 |
Family
ID=
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