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WO2006056399A2 - Combinations of jak inhibitors and at least one of bcr-abl, flt-3, fak or raf kinase inhibitors - Google Patents

Combinations of jak inhibitors and at least one of bcr-abl, flt-3, fak or raf kinase inhibitors Download PDF

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Publication number
WO2006056399A2
WO2006056399A2 PCT/EP2005/012480 EP2005012480W WO2006056399A2 WO 2006056399 A2 WO2006056399 A2 WO 2006056399A2 EP 2005012480 W EP2005012480 W EP 2005012480W WO 2006056399 A2 WO2006056399 A2 WO 2006056399A2
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Prior art keywords
phenyl
amino
methyl
alkyl
amine
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WO2006056399A3 (en
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Nigel Graham Cooke
Paul W. Manley
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Novartis Pharma GmbH Austria
Novartis AG
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Novartis Pharma GmbH Austria
Novartis AG
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Priority to BRPI0517887-8A priority Critical patent/BRPI0517887A/en
Priority to CA002586605A priority patent/CA2586605A1/en
Priority to MX2007006204A priority patent/MX2007006204A/en
Priority to JP2007541823A priority patent/JP2008520612A/en
Priority to US11/719,838 priority patent/US20090156602A1/en
Priority to AU2005309019A priority patent/AU2005309019A1/en
Priority to EP05814596A priority patent/EP1885352A2/en
Priority to RU2007123675/15A priority patent/RU2007123675A/en
Application filed by Novartis Pharma GmbH Austria, Novartis AG filed Critical Novartis Pharma GmbH Austria
Publication of WO2006056399A2 publication Critical patent/WO2006056399A2/en
Publication of WO2006056399A3 publication Critical patent/WO2006056399A3/en
Anticipated expiration legal-status Critical
Priority to US12/834,309 priority patent/US20100280003A1/en
Priority to US13/915,672 priority patent/US20130338168A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
    • A61K31/5375—1,4-Oxazines, e.g. morpholine
    • A61K31/5377—1,4-Oxazines, e.g. morpholine not condensed and containing further heterocyclic rings, e.g. timolol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/275—Nitriles; Isonitriles
    • A61K31/277—Nitriles; Isonitriles having a ring, e.g. verapamil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
    • A61K31/4025—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil not condensed and containing further heterocyclic rings, e.g. cromakalim
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/506—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/517—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with carbocyclic ring systems, e.g. quinazoline, perimidine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/06—Antipsoriatics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A61P35/02—Antineoplastic agents specific for leukemia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system

Definitions

  • the present invention relates to a pharmaceutical combination comprising at least one subtype selective or subtype non-selective JAK kinase inhibitor and at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors, and the uses of such a combination, e.g., in proliferative diseases, e.g., tumors, myelomas, leukemias, psoriasis, restenosis, sclerodermitis and fibrosis.
  • proliferative diseases e.g., tumors, myelomas, leukemias, psoriasis, restenosis, sclerodermitis and fibrosis.
  • a combination comprising at least one at least one JAK kinase inhibitor, targeting one or more of JAK1 , JAK2, JAK3 or TYK2, and at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors, e.g., as defined below, has a beneficial effect on proliferative diseases, e.g., tumors, myelomas, leukemias, psoriasis, restenosis, sclerodermitis and fibrosis.
  • proliferative diseases e.g., tumors, myelomas, leukemias, psoriasis, restenosis, sclerodermitis and fibrosis.
  • Bcr-Abl is a fusion gene which encodes a 210-kd protein with deregulated tyrosine kinase activity and is present in the leukemia cells of almost every patient with chronic myeloid leukemia (CML) and approximately 33% of patients with acute lymphoblastic leukemia (ALL).
  • Bcr-Abl inhibitors are, e.g., compounds having an IC 50 value ⁇ 5 ⁇ M, preferably ⁇ 1 ⁇ M, more preferably ⁇ 0.1 ⁇ M in the following assays:
  • the murine myeloid progenitor cell line 32Dcl3 transfected with the p210 Bcr-Abl expression vector pGDp210Bcr/Abl (32D-Bcr/Abl) was obtained from J. Griffin (Dana Farber Cancer Institute, Boston, MA, USA).
  • the cells express the fusion Bcr-Abl protein with a constitutively active AbI kinase and proliferate growth factor independent.
  • the cells are expanded in RPMI 1640 (AMIMED), 10% fetal calf serum, 2 mM glutamine (Gibco) ("complete medium") and a working stock is prepared by freezing aliquots of 2 x 10 6 cells per vial in freezing medium (95% FCS, 5% DMSO (SIGMA)). After thawing, the cells are used during maximally 10-12 passages for the experiments.
  • tissue culture plates at 37°C, 5% CO 2 , followed by centrifugation of the tissue culture plates at 1 ,300 rpm (Beckmann GPR centrifuge) and removal of the supernatants by careful aspiration taking care not to remove any of the pelleted cells.
  • the cell pellets are lysed by addition of 150 ⁇ l_ lysis buffer (50 mM Tris/HCI, pH 7.4, 150 mM sodium chloride, 5 mM EDTA, 1 mM EGTA, 1 % NP-40, 2 mM sodium ortho-vanadate, 1 mM PMSF, 50 ⁇ g/mL aprotinin and 80 ⁇ g/mL leupeptin) and either used immediately for the ELISA or stored frozen in the plates at -20 0 C until usage.
  • 150 ⁇ l_ lysis buffer 50 mM Tris/HCI, pH 7.4, 150 mM sodium chloride, 5 mM EDTA, 1 mM EGTA, 1 % NP-40, 2 mM sodium ortho-vanadate, 1 mM PMSF, 50 ⁇ g/mL aprotinin and 80 ⁇ g/mL leupeptin
  • Black ELISA plates (Packard HTRF-96 black plates) are precoated over night at 4°C with 50 ng/well of the rabbit polyclonal anti-abl-SH3 domain Ab 06-466 from Upstate in 50 ⁇ L PBS. After washing 3 times with 200 ⁇ L/well PBS containing 0.05% Tween20 (PBST) and 0.5% TopBlock (Juro), residual protein binding sites are blocked with 200 ⁇ L/well PBST, 3% TopBlock for 4 hours at room temperature followed by incubation with 50 ⁇ L lysates of untreated or compound-treated cells (20 ⁇ g total protein per well) for 3-4 hours at 4 0 C.
  • PBST 0.05% Tween20
  • TopBlock TopBlock
  • the difference between the ELISA-readout (CPS) obtained for with the lysates of the untreated 32D-Bcr/Abl cells and the readout for the assay-background (all components, but without cell lysate) is calculated and taken as 100% reflecting the constitutively phosphorylated Bcr-Abl protein present in these cells.
  • the activity of the compound on the Bcr-Abl kinase activity is expressed as percent reduction of the Bcr-Abl phosphorylation.
  • the values for the IC 50 and IC 90 are determined from the dose response curves by graphical extrapolation.
  • Suitable Bcr-Abl inhibitors include e.g.:
  • Ri is 4-pyrazinyl, 1 -methyl- 1H-pyrrolyl, amino- or amino-lower alkyl-substituted phenyl wherein the amino group in each case is free, alkylated or acylated, 1H-indolyl or 1H-imidazolyl bonded at a 5-membered ring carbon atom, or unsubstituted or lower alkyl-substituted pyridyl bonded at a ring carbon atom and unsubstituted or substituted at the nitrogen atom by oxygen;
  • R 2 and R 3 are each independently of the other hydrogen or lower alkyl
  • R 5 , R ⁇ , R 7 and R 8 are each r ⁇ itro, fl ⁇ r ⁇ -substit ⁇ ted lower alkoxy or a radical of the formula
  • R 9 is hydrogen or lower alkyl
  • X is oxo, thio, imino, ⁇ /-lower alkyl-imino, hydroximino or O-lower alkyl-hydroximino;
  • Y is oxygen or the group NH;
  • n is O or 1 ;
  • R 10 is an aliphatic radical having at least 5 carbon atoms, or an aromatic, aromatic- aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, heterocyclic or heterocyclic- aliphatic radical; - A -
  • R 4 , R 5 , R 6 , R 7 and R 8 are each independently of the others hydrogen, lower alkyl that is unsubstituted or substituted by free or alkylated amino, piperazinyl, piperidinyl, pyrrolidinyl or by morpholinyl, or lower alkanoyl, trifluoromethyl, free, etherified or esterifed hydroxy, free, alkylated or acylated amino or free or esterified carboxy; or a salt of such a compound having at least one salt-forming group.
  • Examples of compounds of formula (I) include:
  • Additional Bcr-Abl inhibitor compounds include those disclosed in WO 04/005281 , e.g., a compound of formula (II):
  • R 1 represents hydrogen, lower alkyl, lower alkoxy-lower alkyl, acyloxy-lower alkyl, carboxy-lower alkyl, lower alkoxycarbonyl-lower alkyl or phenyl-lower alkyl;
  • R 2 represents hydrogen, lower alkyl, optionally substituted by one or more identical or different radicals R 3 , cycloalkyl, benzcycloalkyl, heterocyclyl, an aryl group, or a mono- or bicyclic heteroaryl group comprising zero, one, two or three ring nitrogen atoms and zero or one oxygen atom and zero or one sulfur atom, which groups in each case are unsubstituted or mono- or polysubstituted;
  • R 3 represents hydroxy, lower alkoxy, acyloxy, carboxy, lower alkoxycarbonyl, carbamoyl, ⁇ /-mono- or ⁇ /, ⁇ /-di-substituted carbamoyl, amino, mono- or di-substituted amino, cycloalkyl, heterocyclyl, an aryl group, or a mono- or bi-cyclic heteroaryl group comprising zero, one, two or three ring nitrogen atoms and zero or one oxygen atom and zero or one sulfur atom, which groups in each case are unsubstituted or mono- or poly-substituted, or wherein R 1 and R 2 together represent alkylene with four, five or six carbon atoms optionally mono- or di-substituted by lower alkyl, cycloalkyl, heterocyclyl, phenyl, hydroxy, lower alkoxy, amino, mono- or di-substituted amino, oxo, pyridyl,
  • R 4 represents hydrogen, lower alkyl or halogen; and a ⁇ /-oxide or a pharmaceutically acceptable salt of such a compound.
  • Examples of compound according to formula (II) include:
  • Additional Bcr-Abl compounds include those disclosed in EP2005/009967 filed September 16, 2005, namely compounds of the formula (III)
  • R 2 is substituted C 3 -C 8 -cycloalkyl, substituted aryl or substituted heterocyclyl;
  • R 3 is H or unsubstituted or substituted lower alkyl
  • R 4 and R 5 are independently selected from the group consisting of H, unsubstituted or substituted lower alkyl; lower alkyl-carbonyl, wherein the lower alkyl moiety is optionally substituted and lower alkoxy-carbonyl, wherein the lower alkyl moiety is optionally substituted;
  • R 6 is H, unsubstituted or substituted lower alkyl, lower alkoxy, wherein the lower alkyl moiety is optionally substituted or unsubstituted, mono- or di-substituted amino;
  • R 7 and R 8 are independently selected from the group consisting of H, halo and unsubstituted or substituted lower alkyl;
  • Y is -0-, -S-, -S(O)-, -S(O) 2 -, -CH 2 - or -CH 2 -CH 2 -;
  • Z is CH or N and Q is CrC 4 -alkylene or C 2 -C 4 -alkenylene, wherein C- ⁇ -C 4 -alkylene or C 2 -C 4 -alkenylene optionally may be substituted and wherein one or more of the carbon atoms of said C r C 4 -alkylene or C 2 -C 4 -alkenylene chain optionally may be replaced by a heteroatom independently selected from nitrogen, oxygen and sulfur; and the bond between Q and Z characterized by a dotted line is a single bond; with the proviso that if Z is N, Q is not unsubstituted unbranched C r C 4 -alkylene, or
  • Z is C and Q is as defined above, wherein the bond between Q and Z characterized by a dotted line is a double bond;
  • W is either not present or d-C 3 -alkylene; or a tautomer thereof, or a salt thereof.
  • Additional Bcr-Abl compound include those disclosed in EP2005/010408 filed September 27, 2005 and USSN 60/578,491 filed June 10, 2004.
  • Flt-3 inhibitors are, e.g., compounds having an IC 50 value in the range of 1-10'0OO nM, preferably in the range of 1-100 nM in the following assays:
  • Flt-3 kinase inhibition is determined as follows:
  • the baculovirus donor vector pFbacGOI (GIBCO) is used to generate a recombinant baculovirus expressing the amino acid region amino acids 563-993 of the cytoplasmic kinase domain of human Flt-3.
  • the coding sequence for the cytoplasmic domain of Flt-3 is amplified by PCR from human c-DNA libraries (Clontech).
  • the amplified DNA fragments and the pFbacGOI vector are made compatible for ligation by digestion with BamH1 and Hindlll. Ligation of these DNA fragments results in the baculovirus donor plasmid Flt-3(1.1).
  • the production of the viruses, the expression of proteins in Sf9 cells and the purification of the GST-fused proteins are performed as follows:
  • Transfer vector containing the Flt-3 kinase domain is transfected into the DHIOBac cell line (GIBCO) and the transfected cells are plated on selective agar plates. Colonies without insertion of the fusion sequence into the viral genome (carried by the bacteria) are blue. Single white colonies are picked and viral DNA (bacmid) is isolated from the bacteria by standard plasmid purification procedures. Sf9 or Sf21 cells (American Type Culture Collection) are then transfected in flasks with the viral DNA using Cellfectin reagent.
  • Virus containing media is collected from the transfected cell culture and used for infection to increase its titre. Virus containing media obtained after two rounds of infection is used for large-scale protein expression. For large-scale protein expression 100 cm 2 round tissue culture plates are seeded with 5 x 10 7 cells/plate and infected with 1 ml_ of virus-containing media (approximately 5 MOIs). After 3 days, the cells are scraped off the plate and centrifuged at 500 rpm for 5 min.
  • Cell pellets from 10-20, 100 cm 2 plates, are re-suspended in 50 ml_ of ice-cold lysis buffer (25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1% NP-40, 1 mM DTT, 1 mM PMSF). The cells are stirred on ice for 15 min. and then centrifuged at 5,000 rpms for 20 min.
  • ice-cold lysis buffer 25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1% NP-40, 1 mM DTT, 1 mM PMSF.
  • the centrifuged cell lysate is loaded onto a 2 ml_ glutathione-sepharose column (Pharmacia) and washed three times with 10 ml_ of 25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1 mM DTT, 200 mM NaCI.
  • the GST-tagged protein is then eluted by 10 applications (1 ml_ each) of 25 mM Tris-HCI, pH 7.5, 10 mM reduced- glutathione, 100 mM NaCI, 1 mM DTT, 10% glycerol and stored at -70 0 C.
  • Tyrosine protein kinase assays with purified GST-Flt-3 are carried out in a final volume of 30 ⁇ L containing 200-1 ,800 ng of enzyme protein (depending on the specific activity), 20 mM Tris-HCI, pH 7.6, 3 mM MnCI 2 , 3 mM MgCI 2 , 1 mM DTT, 10 ⁇ M Na 3 VO 4 , 3 ⁇ g/mL poly(Glu,Tyr) 4:1 , 1 % DMSO, 8.0 ⁇ M ATP and 0.1 ⁇ Ci [ ⁇ 33 P] ATP).
  • the activity is assayed in the presence or absence of inhibitors, by measuring the incorporation of 33 P from [ ⁇ 33 P] ATP into the poly(Glu,Tyr) substrate.
  • the assay (30 ⁇ L) is carried out in 96-well plates at ambient temperature for 20 min. under conditions described below and terminated by the addition of 20 ⁇ L of 125 mM EDTA. Subsequently, 40 ⁇ L of the reaction mixture is transferred onto Immobilon-PVDF membrane (Millipore, Bedford, MA, USA) previously soaked for 5 min. with methanol, rinsed with water, then soaked for 5 min. with 0.5% H 3 PO 4 and mounted on vacuum manifold with disconnected vacuum source.
  • One unit of protein kinase activity is defined as 1 nmole of 33 P ATP transferred from [ ⁇ 33 P] ATP to the substrate protein per minute per mg of protein at 37 0 C.
  • Suitable Flt-3 inhibitors include, e.g.,
  • (V) is the partially hydrogenated derivative of compound (IV), or .or
  • R 3 , R 4 , R 8 and R 10 are, independently of one another, hydrogen, -O " , acyl with up to 30 carbon atoms, an aliphatic, carbocyclic, or carbocyclic-aliphatic radical with up to 29 carbon atoms in each case, a heterocyclic or heterocyclic-aliphatic radical with up to 20 carbon atoms in each case, and in each case up to 9 heteroatoms, an acyl with up to 30 carbon atoms, wherein R 4 may also be absent, or if R 3 is acyl with up to 30 carbon atoms, R 4 is not an acyl; p is 0 if R 4 is absent, or is 1 if R 3 and R 4 are both present and in each case are one of the aforementioned radicals; R 5 is hydrogen, an aliphatic, carbocyclic, or carbocyclic-aliphatic radical with up to
  • R 7 , R 6 and R 9 are acyl or -(lower alkyl) -acyl, unsubstituted or substituted alkyl, hydrogen, halogen, hydroxy, etherified or esterified hydroxy, amino, mono- or di-substituted amino, cyano, nitro, mercapto, substituted mercapto, carboxy, carbonyl, carbonyldioxy, esterified carboxy, carbamoyl, ⁇ /-mono- or ⁇ /, ⁇ /-di-substituted carbamoyl, sulfo, substituted sulfonyl, aminosulfonyl or ⁇ / ⁇ mono- or ⁇ /, ⁇ /-di- substituted aminosulfonyl;
  • X stands for 2 hydrogen atoms, for 1 hydrogen atom and hydroxy, for O or for hydrogen and lower alkoxy;
  • Z stands for hydrogen or lower alkyl; and either the two bonds characterised by wavy lines are absent in ring A and replaced by 4 hydrogen atoms, and the two wavy lines in ring B each, together with the respective parallel bond, signify a double bond; or or the two bonds characterised by wavy lines are absent in ring B and replaced by a total of 4 hydrogen atoms, and the two wavy lines in ring A each, together with the respective parallel bond, signify a double bond; or both in ring A and in ring B all of the 4 wavy bonds are absent and are replaced by a total of 8 hydrogen atoms; or a salt thereof, if at least one salt-forming group is present.
  • the FLT-3 inhibitor is N-[(9S,10/R,11R,13R)-2,3,10,11 ,12,13-hexahydro-10- methoxy-9-methyl-1 -oxo-9, 13-epoxy-1 H,9/-/-diindolo[1 ,2,3-gh:3',2', 1 '- lm]pyrrolo[3,4-y][1 ,7]benzodiazonin-11-yl]- ⁇ /-methylbenzamide of the formula (X):
  • Additional Flt-3 inhibitor compounds include those disclosed in WO 03/099771 , e.g., diaryl urea derivatives of the formula (Xl):
  • G is either not present, lower alkylene or C 3 -C 5 -cycloalkylene; and Z is a radical of the formula (XIa)
  • Z is a radical of the formula (XIb)
  • A is CH, N or N ⁇ O and A 1 is N or N ⁇ O, with the proviso that not more than one of A and A' can be N ⁇ -O; n is 1 or 2; m is 0, 1 or 2; p is 0, 2 or 3; r is 0 to 5;
  • X is NR if p is 0, wherein R is hydrogen or an organic moiety, or if p is 2 or 3, X is nitrogen which together with (CH 2 ) P and the bonds represented in dotted (interrupted) lines (including the atoms to which they are bound) forms a ring, or
  • X is CHK, wherein K is lower alkyl or hydrogen and p is zero, with the proviso that the bonds represented in dotted lines, if p is zero, are absent;
  • Y 2 is O, S or NH, with the proviso that (Yi) n -(Y 2 V does not include 0-0, S-S, NH-O, NH-S or S-O groups; each of R 1 , R 2 , R 3 and R 5 , independently of the others, is hydrogen or an inorganic or organic moiety or any two of them together form a lower alkylene-dioxy bridge bound via the oxygen atoms, and the remaining one of these moieties is hydrogen or an inorganic or organic moiety; and
  • R 4 (if present, that is, if r is not zero) is an inorganic or organic moiety; or a tautomer thereof; or a pharmaceutically acceptable salt thereof.
  • Examples of compounds of formula (Xl) include:
  • Flt-3 inhibitor compounds include those disclosed in WO 04/046120, e.g., compounds of the formula (XII):
  • R 1 is hydrogen or Y-R 1 , wherein Y is an optionally substituted d-C 6 -alkylidene chain wherein up to two methylene units are optionally and independently replaced with -O-, -S-, -NR-, -OCO-, -COO- or -CO-; each occurrence of R is independently hydrogen or an optionally substituted C ⁇ Ce-aliphatic group; and each occurrence of R' is independently hydrogen or an optionally substituted group selected from a Ci-C 6 -aliphatic group, a 3- to 8-membered saturated, partially unsaturated or fully unsaturated monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur, or an 8- to 12-membered saturated, partially unsaturated or fully unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur, or R and R 1 , two occurrences of R 1 or two occurrences of R', are taken together with the atom(s
  • T is an optionally substituted Ci-C 4 -alkylidene chain wherein one methylene unit of T is optionally replaced by -NR-, -S-, -O-, -CS-, -CO 2 -, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO 2 -, -SO 2 NR-, -NRSO 2 -, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO 2 NR-, -SO-, -SO 2 -, -PO-, -PO 2 - or -POR-; n is O or 1 ;
  • Ar 1 is an optionally substituted aryl group selected from a 5- to 6-membered monocyclic or an 8- to 12-membered bicyclic ring having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur; and Cy 1 is an optionally substituted group selected from a 3- to 7-membered saturated or partially unsaturated monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur, or an 8- to 12-membered saturated or partially unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur, or
  • R 1 and R 2 taken together with the nitrogen form an optionally substituted 5- to 8-membered monocyclic or 8- to 12-membered bicyclic saturated, partially unsaturated or fully unsaturated ring having 0-3 additional heteroatoms independently selected from nitrogen, oxygen or sulfur, wherein Ar 1 , Cy 1 or any ring formed by R 1 and R 2 taken together, are each independently optionally substituted with x independent occurrences of Q-R x , wherein x is 0-5;
  • Q is a bond or is a Ci-C 6 -alkylidene chain wherein up to two methylene units of Q are optionally replaced by -NR-, -S-, -O-, -CS-, -CO 2 -, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO 2 -, -SO 2 NR-, -NRSO 2 -, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO 2 NR-, -SO-, -SO 2 -, -PO-, -PO 2 - or -POR-; and each occurrence of R x is independently R 1 , halogen, NO 2 , CN, OR', SR', N(R') 2 ,
  • R 3 is bonded to the nitrogen atom in either the 1- or 2-position of the ring and is (L) 01 Ar 2 or (L) m Cy 2 , wherein
  • L is an optionally substituted CrC 4 -alkylidene chain wherein one methylene unit of L is optionally replaced by -NR-, -S-, -0-, -CS-, -CO 2 -, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO 2 -, -SO 2 NR-, -NRSO 2 -, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO 2 NR-, -SO-, -SO 2 -, -PO-, -PO 2 - or -POR-; m is O or 1 ;
  • Ar 2 is an optionally substituted aryl group selected from a 5- to 6-membered monocyclic or an 8- to 12-membered bicyclic ring having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur; and Cy 2 is an optionally substituted group selected from a 3- to 7-membered saturated or partially unsaturated monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur, or an 8- to 12-membered saturated or partially unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur, wherein Ar 2 and Cy 2 are each independently optionally substituted with y occurrences of Z-R ⁇ , wherein y is 0-5;
  • Z is a bond or is a Ci-C 6 -alkylidene chain wherein up to two methylene units of Z are optionally replaced by -NR-, -S-, -O-, -CS-, -CO 2 -, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO 2 -, -SO 2 NR-, -NRSO 2 -, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO 2 NR-, -SO-, -SO 2 -, -PO-, -PO 2 - or -POR-; and each occurrence of R ⁇ is independently R', halogen, NO 2 , CN, OR', SR', N(R') 2 , NR 1 COR', NR'C0NR' 2 , NR 1 CO 2 R', COR 1 , CO 2
  • R 4 is hydrogen or C r C 6 -alkyl, provided that when R 5 is hydrogen, R 4 is also hydrogen; R 5 is hydrogen, or
  • R 3 and R 5 taken together form an optionally substituted group selected from a 5- to 7-membered saturated, partially unsaturated or fully unsaturated monocyclic ring
  • W is a bond or is a C-rC ⁇ -alkylidene chain wherein up to two methylene units of W are optionally and independently replaced by -NR-, -S-, -0-, -CS-, -CO 2 -, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO 2 -, -SO 2 NR-, -NRSO 2 -, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO 2 NR-, -SO-, -SO 2 -, -PO-, -PO 2 - or -POR-; and each occurrence of R w is independently R 1 , halogen, NO 2 , CN, OR 1 , SR 1 , N(R') 2 ,
  • R 3 is substituted or unsubstituted phenyl, then R 2 is not phenyl substituted in the para position with oxazole, thiazole, thiadiazole, oxadiazole, tetrazole, triazole, diazole or pyrrole; c) R 3 is phenyl, pyridyl, pyrimidinedione or cyclohexyl and R 1 is hydrogen, then R 2 is not phenyl simultaneously substituted with one occurrence of OMe in the meta position, and one occurrence of oxazole in the para position; d) R 3 is 4-CI phenyl or 3,4-CI-phenyl, then R 2 is not p-CI phenyl; e) R 3 is unsubstituted pyrimidinyl, then R 2 is
  • R 2 Js 3-pyridinyl and R 1 is hydrogen, then R 3 is not trimethoxybenzoyl; h) R 3 is optionally substituted phenyl and R 1 is hydrogen, then R 2 is not
  • R 1 is hydrogen and R 2 is unsubstituted benzyl, then R 3 is not thiadiazole substituted with optionally substituted phenyl;
  • R i1 is hydrogen, R is pyridyl and R is pyridyl, then R is not substituted with one or more of CF 3 , Me, OMe, Br or Cl;
  • R 1 is hydrogen and R 2 is pyridyl, then R 3 is not unsubstituted pyridyl, unsubstituted quinoline, unsubstituted phenyl or unsubstituted isoquinoline;
  • R 1 is hydrogen and R 2 is unsubstituted quinoline, then R 3 is not unsubstituted pyridyl or unsubstituted quinoline; m) R 1 is hydrogen and R 2 is unsubstituted isoquinoline or unsubstituted naphthyl, then R 3 is not unsubstituted pyridyl; n) compounds of formula (XII) exclude those compounds having the general structure:
  • R 1 , R 2 and R 3 are as defined above; and M and K are O or H 2 , provided that K and M are different, A and B are each
  • R a is lower alkyl or aralkyl
  • R b is straight- or branched-chain alkyl, aralkyl or aryl which can either be unsubstituted or substituted with one or more alkyl and/or haloalkyl substituents; o) compounds of formula (XII) exclude those compounds having the general structure:
  • R 1 and R 2 are as defined above; and r and s are each independently 0, 1 , 2, 3 or 4, provided that the sum of s and r is at least 1 ; p) compounds of formula (XII) exclude any one or more of, or all of the following compounds:
  • R 2 is unsubstituted phenyl or phenyl substituted with OMe, Cl or Me;
  • R 2 is unsubstituted phenyl or phenyl substituted with OMe, Cl, Me or OMe, or
  • R 2 is unsubstituted benzyl
  • R 2 is optionally substituted aralkyl
  • R° and R d are, each independently, Me, hydrogen, CH 2 CI or Cl;
  • R ⁇ is optionally substituted phenyl
  • R 2 is phenyl optionally substituted with Me, OMe, Br or Cl; or q) when
  • R 1 is hydrogen
  • RAF kinase a serine/threonine kinase that functions in the MAP kinase signaling pathway which is one of the pathways for growth factors to send their signal to proliferate from the extracellular environment to the cell nucleus.
  • RAF inhibitors are, e.g., compounds which inhibit wild-type C-Raf at an IC 50 of from 0.05 mmol/L to more than 4.0 mmol/L and/or mutant B-Raf (V599E) at an IC 50 of from 0.08 mmol/L to more than 4.0 mmol/L in the following assays:
  • RAF kinase Active B-Raf, C-Raf and V599E B-Raf proteins of human sequence are purified from insect cells using the baculoviral expression system. Raf inhibition is tested in 96-well microplates coated with l ⁇ B- ⁇ and blocked with Superblock. The phosphorylation of l ⁇ B- ⁇ at Serine 36 is detected using a phospho-l ⁇ B- ⁇ specific antibody (Cell Signaling #9246), an anti-mouse IgG alkaline phosphatase conjugated secondary antibody (Pierce #31320), and an alkaline phosphatase substrate, ATTOPHOS (Promega, #S101).
  • Suitable RAF inhibitors include, e.g.,
  • A, B, D and E are each independently of the others N or CH, with the proviso that not more than two of those radicals are N;
  • G is lower alkylene, -CH 2 -O-, -CH 2 -S-, -CH 2 -NH-, oxa (-O-), thia (-S-) or imino (-NH-), or is lower alkylene substituted by acyloxy or by hydroxy;
  • Q is lower alkyl, especially methyl;
  • R is H or lower alkyl;
  • X is imino, oxa or thia;
  • Y is lower alkyl or, especially, aryl, heteroaryl or unsubstituted or substituted cycloalkyl
  • Z is amino, mono- or di-substituted amino, halogen, alkyl, substituted alkyl, hydroxy, etherified or esterified hydroxy, nitro, cyano, carboxy, esterified carboxy, alkanoyl, carbamoyl, ⁇ /-mono- or ⁇ /, ⁇ /-di-substituted carbamoyl, amidino, guanidino, mercapto, sulfo, phenylthio, phenyl-lower alkylthio, alkylphenylthio, phenylsulfinyl, phenyl-lower alkylsulfinyl, alkylphenylsulfinyl, phenylsulfonyl, phenyl-lower alkanesulfonyl or alkylphenylsulfonyl, and where, if more than one radical Z is present (m >2), the substituents Z
  • Additional RAF inhibitors include compounds disclosed in WO 05/028444, e.g., compounds of formula (XIV):
  • J is aryl, heteroaryl, cycloalkyl or heterocycloalkyl, wherein aryl is an aromatic radical having from 6-14 carbon atoms, such as phenyl, naphthyl, fluorenyl and phenanthrenyl; , heteroaryl is an aromatic radical having from 4-14, especially from 5-7 ring atoms, of which 1 , 2 or 3 atoms are chosen independently from N, S and O, such as furyl, pyranyl, pyridyl, 1 ,2-, 1 ,3- and 1 ,4-pyrimidinyl, pyrazinyl, triazinyl, triazolyl, oxazolyl, quinazolyl, imidazolyl, pyrrolyl, isoxazolyl isothiazolyl, indolyl, isoindolinyl, quinolyl, isoquinolyl, purinyl, cinnolinyl, naphthyridinyl
  • Q is a substituent on 1 or 2 carbon atoms selected from the group consisting of halogen, unsubstituted or substituted lower alkyl, -OR 2 , -SR 2 , -NR 2 , -NRS(O) 2 N(R) 2 , -NRS(O) 2 R, -S(O)R 2 , -S(O) 2 R 2 , -OCOR 2 , -C(O)R 2 , -CO 2 R 2 , -NR-COR 2 , -CON(R 2 ) 2 , -S(O) 2 N(R 2 ) 2 , cyano, fr/-methylsilanyl, unsubstituted or substituted aryl, unsubstituted or substituted heteroaryl, such as substituted or unsubstituted imidazolyl, and substituted or unsubstituted pyridinyl, unsubstituted or substituted cycloalkyl, un
  • R is H or lower alkyl
  • R 2 is unsubstituted or substituted alkyl, unsubstituted or substituted cycloalkyl, phenyl, -CrC 4 -alkyl-aryl, -CrC 4 -alkyl-heteroaryl or -C 1 -C 4 -alkyl-heterocycloalkyl;
  • X is Y, -N(R)-, oxa, thio, sulfone, sulfoxide, sulfonamide, amide or ureylene, preferably -NH-;
  • Y is H, lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted cycloalkyl or substituted or unsubstituted heterocycloalkyl;
  • Z is amino, mono- or di-substituted amino, halogen, alkyl, substituted alkyl, hydroxy, etherified or esterified hydroxy, nitro, cyano, carboxy, esterified carboxy, alkanoyl, carbamoyl, ⁇ /-mono- or ⁇ /, ⁇ /-di-substituted carbamoyl, amidino, guanidino, mercapto, sulfo, phenylthio, phenyl-lower alkylthio, alkylphenylthio, phenylsulfinyl, phenyl-lower alkylsulfinyl, alkylphenylsulfinyl, phenylsulfonyl, phenyl-lower alkanesulfonyl or alkylphenylsulfonyl, and where, if more than one radical Z is present (m ⁇ 2), the substituents
  • FAK Focal Adhesion Kinase
  • Compounds of the invention are active in a FAK assay system as described in the Examples, and show an inhibition IC 50 in the range of 1-100 nM. Particularly active are the compounds show IC 50 vales in the range of 1-5 nM.
  • FAK inhibition is determined as follows: All steps are performed in a 96-well black microtiter plate. Purified recombinant hexahistidine-tagged human FAK kinase domain is diluted with dilution buffer (50 mM HEPES, pH 7.5, 0.01 % BSA, 0.05% Tween-20 in water) to a concentration of 94 ng/mL (2.5 nM).
  • dilution buffer 50 mM HEPES, pH 7.5, 0.01 % BSA, 0.05% Tween-20 in water
  • the reaction mixture is prepared by mixing 10 ⁇ l_ 5 x kinase buffer (250 mM HEPES, pH 7.5, 50 ⁇ M Na 3 VO 4 , 5 mM DTT, 10 mM MgCI 2 , 50 mM MnCI 2 , 0.05% BSA, 0.25% Tween-20 in water), 20 ⁇ L water, 5 ⁇ l_ of 4 ⁇ M biotinylated peptide substrate (Biot-Y397) in aqueous solution, 5 ⁇ L of test compound in DMSO and 5 ⁇ L of recombinant enzyme solution and incubated for 30 min. at room temperature.
  • 10 ⁇ l_ 5 x kinase buffer 250 mM HEPES, pH 7.5, 50 ⁇ M Na 3 VO 4 , 5 mM DTT, 10 mM MgCI 2 , 50 mM MnCI 2 , 0.05% BSA, 0.25% Tween-20 in water
  • 20 ⁇ L water 5
  • the enzyme reaction is started by addition of 5 ⁇ L of 5 ⁇ M ATP in water and the mixture is incubated for 3 hours at 37°C.
  • the reaction is terminated by addition of 200 ⁇ L of detection mixture (1 nM Eu-PT66, 2.5 ⁇ g/mL SA-(SL)APC, 6.25 mM EDTA in dilution buffer), and the FRET signal from europium to allophycocyanin is measured by ARVOsx+L (Perkin Elmer) after 30 min. of incubation at room temperature.
  • the ratio of fluorescence intensity of 665 nm to 615 nm is used as a FRET signal for data analysis in order to cancel the colour quenching effect by a test compound. The results are shown as percent inhibition of enzyme activity.
  • DMSO and 0.5 M EDTA are used as a control of 0% and 100% inhibition, respectively.
  • IC 50 values are determined by non-linear curve fit analysis using the OriginPro 6.1 program (OriginLab).
  • the Biot-Y397 peptide (Biotin-SETDDYAEIID ammonium salt) is designed to have the same amino acid sequence as the region from S392 to D402 of human (GenBank Accession Number L13616) and is prepared by standard methods.
  • Purified recombinant hexahistidine-tagged human FAK kinase domain is obtained in the following way: Full-length human FAK cDNA is isolated by PCR amplification from human placenta Marathon-ReadyTM cDNA (Clontech, No. 7411-1) with the 5' PCR primer (ATGGCAGCTGCTTACCTTGAC) and the 3' PCR primer TCAGTGTGGTCTCGTCTGCCC) and subcloned into a pGEM-T vector (Promega, No. A3600). After digestion with Acclll, the purified DNA fragment is treated with Klenow fragment.
  • the cDNA fragment is digested with BamHI and cloned into pFastBacHTb plasmid (Invitrogen Japan K.K., Tokyo) previously cut with BamHI and Stu I.
  • the resultant plasmid, hFAK KD (M384-G706)/pFastBacHTb is sequenced to confirm its structure.
  • the resulting DNA encodes a 364 amino acid protein containing a hexahistidine tag, a spacer region and a rTEV protease cleavage site at the ⁇ Merminal and the kinase domain of FAK (Met384-Gly706) from position 29 to 351.
  • Donor plasmid is transposed into the baculovirus genome, using MaxEfficacy DHIOBac E.coli cells.
  • Bacmid DNA is prepared by a simple alkaline lysis protocol described in the Bac-to-Bac ® Baculovirus Expression system (Invitrogen). Sf9 insect cells are transfected based on the protocol provided by the vendor (CellFECTIN ® , Invitrogen). The expression of FAK in each lysate is analysed by SDS-PAGE and Western blotting with anti-human FAK monoclonal antibody (clone #77 from Transduction Laboratories).
  • the virus ⁇ clone that ⁇ showsihe- highest expression is further amplified ⁇ by infection to Sf9 cells.
  • Expression in ExpresSF ⁇ ® cells (Protein Sciences Corp., Meriden, CT, USA) gives high level of protein with little degradation.
  • Cell lysates are loaded onto a column of HiTrapTM Chelating Sepharose HP (Amersham Biosciences) charged with nickel sulfate and equilibrated with 50 mM HEPES pH 7.5, 0.5 M NaCI and 10 mM imidazole.
  • Captured protein is eluted with increasing amounts of imidazole in HEPES buffer/NaCI, and further purified by dialysis in 50 mM HEPES pH 7.5, 10% glycerol and 1 mM DTT.
  • Suitable FAK inhibitors include compound of formula (XV), which are disclosed in WO 04/080980:
  • R 0 , R 1 , R 2 and R 3 independently is hydrogen, Ci-C 8 -alkyl, C 2 -C 8 -alkenyl,
  • C 2 -C 8 -alkinyl C 3 -C 8 -cycloalkyl, C 3 -C 8 -cycloalkyl-C r C 8 -alkyl, Cs-do-aryl-d-Cs-alkyl, hydroxy-CrCs-alkyl, d-Cs-alkoxy-d-Cs-alkyl, amino-C r C 8 -alkyl, halo-d-C 8 -alkyl, unsubstituted or substituted C 5 -C 10 -aryl, unsubstituted or substituted 5- or 6-membered heterocyclyl comprising 1 , 2 or 3 hetero atoms selected from N, O and S, hydroxy, Ci-C 8 -alkoxy, hydroxy-Ci-C 8 -alkoxy, Ci-C 8 -alkoxy-Ci-C 8 -alkoxy, halo-CrC 8 -alkoxy, unsubstituted
  • R 0 .and R 1 , R 1 and R 2 and/or R 2 and R 3 form, together with the carbon atoms to which they are attached, a 5- or 6-membered carbocyclic or heterocyclic ring comprising 0, 1 , 2 or 3 heteroatoms selected from N, O and S;
  • R i4 is hydrogen or d-C 8 -alkyl
  • each of R 5 and R 6 independently is hydrogen, C r C 8 -alkyl, d-Cs-alkoxy-d-C ⁇ -alkyl, halo-CrCs-alkyl, d-C 8 -alkoxy, halogen, carboxy, C r C 8 -alkoxycarbonyl, unsubstitued or substituted carbamoyl, cyano or nitro
  • each of R 7 , R 8 , R 9 and R 10 independently is C r C 8 -alkyl, C 2 -C 8 -alkenyl, C 2 -C 8 -alkinyl,
  • R 7 and R 8 , R 8 and R 9 and/or R 9 and R 10 form, together with the carbon atoms to which they are attached, a 5- or 6-membered carbocyclic or heterocyclic ring comprising 0, 1 , 2 or 3 heteroatoms selected from N, O and S;
  • A is C or N; and salts thereof.
  • FAK inhibitors are disclosed in WO 04/056786 to Pfizer; WQ 03/024967 to Aventis; WO 01/064655 and WO 00/053595 to AstraZeneca; and WO 01/014402.
  • the Janus kinases, JAK1 , JAK2, JAK3 and TYK2 are cytoplasmic protein tyrosine kinases which associate with multiple transmembrane receptors for chemokines (e.g., CCR2, CCR5, CCR7, CXCR4), interferons and cytokines (e.g., GM-CSF, erythropoietin, prolactin and interleukins (IL-2, IL-3, IL-4, IL-5, IL-6.IL-12 IL-13, etc.). Ligand binding to these receptors leads to activation of the associated JAK members, an essential event in the intracellular transmission of the receptor's signal.
  • chemokines e.g., CCR2, CCR5, CCR7, CXCR4
  • interferons and cytokines e.g., GM-CSF, erythropoietin, prolactin and interleukins (IL-2, IL-3,
  • JAK activations results in phosphorylation of multiple downstream targets including the transcription factor family Signal Tranducer and Activator of Transcription (STAT). JAK activation regulates multiple processes, particularly within the haematopoietic compartment. Targeted disruption of JAK2 results in a embryonic lethal failure to produce mature erythrocytes, underlining the importance of JAK2 in mediating signaling from the erythropoietin growth factor receptor. Additional roles for JAK2 in prolactin signaling in the breast have also been delineated. JAK family members are also of importance in regulating inflammatory and immune responses, by controlling the development and homeostasis of lymphocytes and other immunomodulating cells.
  • STAT transcription factor family Signal Tranducer and Activator of Transcription
  • JAK3 an enzyme primarily expressed in T and B cells, plays a particularly critical role in the development of T cell and their ability to mount an immune response. Disruption of JAK3 signaling is associated with Severe Combined Immunodeficiency Syndromes (SCID) in both mice and humans.
  • SCID Severe Combined Immunodeficiency Syndromes
  • JAK3 kinase inhibitors are, e.g., compounds having an IC 50 value ⁇ 5 ⁇ M, preferably ⁇ 1 ⁇ M, more preferably ⁇ 0.1 ⁇ M in the following assays:
  • IL-2 dependent proliferation assays with CTUL and HT-2 cells The IL-2 dependent mouse T cell lines CTL/L and HT-2 are cultured in RPMI 1640 (Gibco 52400-025) supplemented with 10% Fetal Clone I (HyClone), 50 ⁇ M 2-mercaptoethanol (31350-010), 50 ⁇ g/mL gentamycine (Gibco 15750-037), 1 mM sodium pyruvate (Gibco 11360-039), non ⁇ essential amino acids (Gibco 11140-035; 100x) and 250 U/mL mouse IL-2 (supernatant of X63-Ag8 transfected cells containing 50'0OO U/mL mouse IL-2 according to Genzyme standard). Cultures are split twice a week 1 :40.
  • the proliferation assay is performed with 4000 CTL/L cells/well or 2500 HT-2 cells/well in flat- bottom 96-well tissue culture plates containing appropriate dilutions of test compounds in culture medium with 50 U/mL mouse IL-2. CTL/L cultures are incubated at 37 0 C for 24 hours and HT-2 cultures are incubated for 48 hours. After addition of 1 ⁇ Ci 3 H-thymidine and a further overnight incubation cells are harvested onto fibre filters and radioactivity is counted.
  • Human peripheral blood mononuclear cells are isolated on Ficoll from buffy coats with unknown HLA type (Blutspendetechnik, Kantonsspital, Basel, Switzerland). Cells are kept at 2 x 10 7 cells/mL (90% FCS, 10% DMSO) in cryotubes (Nunc) in liquid nitrogen until use.
  • the cells are incubated for four days at 37 0 C in a humidified CO 2 (7%) incubator in costar flasks at the concentration of 7 x 10 5 cells/mL in culture medium containing RPMI 1640 (Gibco, Pacely, England) supplemented with Na-pyruvate (1 mM; Gibco), MEM non-essential amino acids and vitamins (Gibco), 2-mercaptoethanol (50 ⁇ M), L-glutamine (2 mM), gentamicin and penicillin/streptomycin (100 ⁇ g/mL; Gibco), bacto asparagine (20 ⁇ g/mL; Difco), human insulin (5 ⁇ g/mL; Sigma), human transferrin (40 ⁇ g/mL; Sigma), selected fetal calf serum (10%, Hyclone Laboratories, Logan, UT) and 100 ⁇ g/mL phytohemagglutinine.
  • RPMI 1640 Gibco, Pacely, England
  • Cells are washed twice in RPMI 1640 medium containing 10% FCS and incubated for 2 hours. After centrifugation, the cells are taken up in the culture medium mentioned above (without phytohemagglutinine) containing interleukin-2 (Chiron 200 U/mL), distributed in triplicates into flat-bottomed 96-well tissue culture plates (Costar #3596) at a concentration of 5 x 10 4 cells/0.2 mL in the presence of appropriate concentrations of test compounds and incubated at 37 0 C for 72 hours. 3/-/-thymidine (1 ⁇ Ci/0.2 mL) was added for the last 16 hours of culture. Subsequently, cells are harvested and counted on a scintillation counter.
  • interleukin-2 Chiron 200 U/mL
  • Suitable JAK kinase inhibitors include, e.g.,
  • each of R 2 and R 3 is selected from the group consisting of H, amino, halogen, OH, nitro, carboxy, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, CF 3 , trifluoromethoxy, Ci-C 6 -alkyl, d-C 6 -alkoxy, C 3 -C 6 -cycloalkyl, wherein the alky], alkoxy or cycloalkyl groups are optionally substituted by one to three groups selected from halogen, OH, carboxy, amino, CrC 6 -alkylthio, CrC 6 -alkylamino, C 5 -C 9 -heteroaryl, C 2 -C 9 -rieterocycloalkyl, C 3 -C 9 -cycloalkyl or C 6 -C 10 -aryl, or each of R 2 and R 3 , independently, is C 3 -Ci 0 -cycl
  • Examples of compound of (XVI) include, e.g., methyl-[(3f?,4R)-4-methyl-1-(propane-1-sulfonyl)-piperidin-3-yl]-(7/-/-pyrrolo[2,3- c(]pyrimidin-4-yl)-amine;
  • Additional JAK inhibitors include compounds as disclosed in WO 02/092571 , e.g., a compound of formula (XVII)
  • X is NR 3 or O; n is 0 or 1 ;
  • Ar 1 is selected from phenyl, tetrahydronaphthenyl, indolyl, pyrazolyl, dihydroindenyl,
  • R groups are independently is hydrogen or C r C 8 -alkyl
  • R 1 and R 2 independently, is selected from H, halogen, nitro, cyano, C- ⁇ -C 8 -alkyl, d-C ⁇ -alkoxy, OH, aryl, Y(CR 11 2 ) P NR 4 R5, Y(CR 11 2 )pCONR 4 R 5 Y(CR 11 2 )pCO 2 R 6 ,
  • R 1 and R 2 are linked together as -OCHO- or -OCH 2 CH 2 O-; each R 11 , independently, is H, C r C 8 -alkyl, hydroxy or halogen; p is O, 1 , 2, 3, 4 or 5;
  • R 3 is H or d-Ce-alkyl
  • Y is oxygen, CH 2 or NR 7
  • R 3 is hydrogen or d-C 8 -alkyl
  • each of R 4 and R 5 independently, is H, d-C ⁇ -alkyl, or
  • R 4 and R 5 are H or C r C 8 -alkyl and the other is a 5- or 6-membered heterocyclic ring system optionally containing a further O, S or N atom;
  • R 6 is H, CrC ⁇ -alkyl, phenyl or benzyl;
  • R 7 is H or d-Cs-alkyl
  • R 8 is H or Ci-Ce-alkyl; each of R 9 and R 10 , independently, is hydrogen or C ⁇ C 8 -alkyl; and pharmaceutically acceptable salts thereof.
  • JAK inhibitors examples include compounds as disclosed in U.S. Patent No. 2002/0055514 A1 , e.g., a compound of formula (XVIII)
  • X is NH, NR 11 , S, O CH 2 or R 11 CH, wherein R 11 is H, Ci-C 4 -alkyl or C 1 -C 4 -alkanoyl; each of R 1 -R 8 , independently, is H, halogen, OH, mercapto, amino, nitro, C ⁇ C 4 -alkyl, C 1 - C 4 -alkoxy or C r C 4 -alkylthio, wherein 2 of R 1 -R 5 , together with the phenyl ring to which they are attached, may optionally form a fused ring, e.g., forming a naphthyl or a tetrahydronaphthyl ring; and further wherein the ring formed by the two adjacent groups of RrR 5 may optionally be substituted by 1, 2, 3 or 4 halogen, hydroxy, mercapto, amino, nitro, CrC ⁇ alkyl, C- ⁇ -C 4 -alk
  • R 9 and R 10 together, are methylenedioxy; or a pharmaceutically acceptable salt thereof, and provided that at least one of R 2 -R 5 is OH.
  • Additional JAK inhibitors include compounds as disclosed in WO 04/052359, e.g., a compound of formula (XIX)
  • n 1 , 2, 3, 4 or 5;
  • R 1 is H, CH 3 or CH 2 N(CH 3 ) 2 ;
  • R 3 is CH 2 N(CHs) 2 .
  • the compounds of formulae (XVI)-(XIX) may exist in free or salt form.
  • pharmaceutically acceptable salts of the compounds of the formulae (XVI)-(XIX) include salts with inorganic acids, such as hydrochloride; salts with organic acids, such as acetate or citric acid, or, when appropriate, salts with metals, such as sodium or potassium; salts with amines, such as triethylamine; and salts with dibasic amino acids, such as lysine.
  • Additional JAK inhibitors include compounds as disclosed in WO 03/048162, e.g., amorphous and crystallline forms of 3- ⁇ (3f?,4R)-4-methyl-3-[methyl-(7H-pyrrolo[2,3- cf]pyrimidin-4-yl)-amino]-piperidin-1-yl ⁇ -3-oxo-propionitrile mono citrate salt.
  • Additional-JAKJnhibitors include compounds as disclosed in WO 01/42246 and WO 02/096909, e.g., a compound of formula (XX)
  • R 1 is a group of the formula (XXI)
  • y is O, 1 or 2;
  • R 4 is selected from the group consisting of hydrogen, d-C 6 -alkyl, Ci-C 6 -alkylsulfonyl, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, wherein the alkyl, alkenyl and alkynyl groups are optionally substituted by deuterium, hydroxy, amino, trifluoromethyl, Ci-C 4 -alkoxy, C r C 6 -acyloxy, C-i-Ce-alkylamino, (Ci-C 6 -alkyl) 2 amino, cyano, nitro, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl or CrCe-acylamino, or
  • R 4 is C 3 -C 10 -cycloalkyl, wherein the cycloalkyl group is optionally substituted by deuterium, hydroxy, amino, trifluoromethyl, Ci-C 6 -acyloxy, CrC 6 -acylamino, Ci-C 6 -alkylamino, (d-Ce-alkyl ⁇ amino, cyano, cyano-Ci-C 6 -alkyl, trifluoromethyl-CrCe-alkyl, nitro, nitro-C r C 6 -alkyl or C r C 6 -acylamino;
  • R 5 is C 2 -C 9 -heterocycloalkyl, wherein the heterocycloalkyl groups must be substituted by one to five carboxy, cyano, amino, deuterium, hydroxy, CrC 6 -alkyl, C- ⁇ -C 6 -alkoxy, halo, CrC 6 -acyl, CrC ⁇ -alkylamino, amino-d-Ce-alkyl, d-Ce-alkoxy-CO-NH, CrCe-alkylamino-CO-, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, Ci-C 6 -alkylamino, amino-Ci-C 6 -alkyl, hydroxy-Ci-C 6 -alkyl, CrC 6 -SIkOXy-C 1 -C 6 - alkyl, CrC ⁇ -acyloxy-CrCe-alkyl, nitro, cyano-CrC 6
  • R 15 and R 16 are each independently selected from hydrogen or C r C 6 -alkyl, or a group of the formula (XXII) wherein a is 0, 1 , 2, 3 or 4; b, c, e, f and g are each independently 0 or 1 ; d is 0, 1 , 2 or 3;
  • Y is S(O) n , wherein n is 0, 1 or 2 or carbonyl;
  • Z is carbonyl, C(O)O-, C(O)NR- or S(O) n , wherein n is 0, 1 or 2;
  • R 6 , R 7 , R 8 , R 9 , R 10 and R 11 are each independently selected from the group consisting of hydrogen or CrC 6 -alkyl optionally substituted by deuterium, hydroxy, amino, trifluoromethyl, Ci-C 6 -acyloxy, Ci-C 6 -acylamino, CrC 6 -alkylamino, (Ci-C 6 -alkyl) 2 amino, cyano, cyano-CrC 6 -alkyl, trifluoromethyl-CrC ⁇ -alkyl-, nitro, nitro-CrC 6 -alkyl or C r C 6 -acylamino;
  • R 12 is carboxy, cyano, amino, oxo, deuterium, hydroxy, trifluoromethyl, Ci-C 6 -alkyl, trifluoromethyl-Ci-C 6 -alkyl, C- ⁇ -C 6 -alkoxy, halo, Ci-C e -acyl, CrCe-alkylamino, (C r C 6 -alkyl) 2 amino, amino-C r C 6 -alkyl, d-Ce-alkoxy-CO- NH, CrC ⁇ -alkylamino-CO-, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, Ci-C 6 -alkylamino, hydroxy-CrCe-alkyl, d-Ce-alkoxy-Ci-Ce-alkyl, C- ⁇ -C 6 -acyloxy-d-C 6 -alkyl, -nitroreyano-G T -
  • R 15 and R 16 are each independently selected from hydrogen or C r C 6 -alkyl;
  • R 2 and R 3 are each independently selected from the group consisting of hydrogen, deuterium, amino, halo, hydoxy, nitro, carboxy, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, trifluoromethyl, trifluoromethoxy, d-Ce-alkyl, C r C 6 -alkoxy, C 3 -C 10 -cycloalkyl, wherein the alkyl, alkoxy or cycloalkyl groups are optionally substituted by one to three groups selected from halo, hydroxy, carboxy, amino-d-C ⁇ -alkylthio, Ci-C 6 -alkylamino, (C 1 -C 6 -alkyl) 2 amino, C 5 -C 9 -heteroaryl, C 2 -C 9 -heterocycloalkyl, C 3
  • R 2 and R 3 are each independently C 3 -C 10 -cycloalkyl, C 3 -Ci 0 -cycloalkoxy, CrCe-alkylamino, (C r C 6 -alkyl) 2 amino, C 6 -Ci 0 -arylamino, C r C 6 -alkylthio, C 6 -Ci 0 -arylthio, d-C ⁇ -alkylsulfinyl, C 6 -Ci 0 -arylsulfinyl, d-C 6 -alkylsulfonyl, C 6 -C 10 -arylsulfonyl, C 1 -C 6 -SCyI 1 CrCe-alkoxy-CO-NH-, d-Ce-alkyamino-CO-, C 5 -C 9 -heteroaryl, C 2 -C 9 -heterocycloalkyl or C 6 -C 10 -
  • X is either carbon or nitrogen
  • R1 is CrC-io-allyl, C 2 -Ci 0 -alkenyl, C 2 -C 10 -alkynyl, C 2 -C 10 -allylaryl, aryl or heterocyclyl, or
  • R1 with N may form a substituted or unsubstituted heterocyclyl, wherein the allyl, alkenyl, alkynyl, allylaryl, aryl, and heterocyclyl, is optionally substituted with one to three members selected from the group consisting of halo, amino, hydroxy, hydroxyalkyl, alkylamide, arylamide, hydroxyallylamide, nitrilo, aminoalkylamide, nitriloaryl, alkoxy (in particular, methoxy), heterocyclic alkyl in which heterocycle is a 5- to 7-membered ring and in which the hetero atom is O, N or S;
  • R2 is selected from Ci-C,o-allyl, C 2 -Ci o-alkenyl, C 2 -Ci 0 -alkynyl, C 2 -C 10 -allylaryl, aryl, halo, OH, or 6- to 7-membered heterocyclyl, wherein the alkyl, alkenyl, alkynyl, allylaryl, aryl and heterocyclyl, is optionally substituted with one to three members selected from the group consisting of halo, amino, hydroxy, hydroxyalkyl, alkylamide, arylamide, hydroxyalkylamide, nitrilo, aminoalkylamide, nitriloaryl, alkoxy (in particular, methoxy), heterocyclic alkyl, in which heterocycle is a 5- to 7-membered ring and in which the hetero atom is O, N or S.
  • Additional JAK inhibitors include compounds also disclosed in WO 02/060492, to cytopic, e.g., a compound of formula (XXIV)
  • R6 is C-i-Cio-allyl, C 2 -C 10 -alkenyl, C 2 -Ci 0 -alkynyl, C 2 -C 10 -allylaryl, aryl or heterocyclyl;
  • R7 is Ci-Cio-allyl, C 2 -Ci 0 -alkenyl, C 2 -Ci 0 -alkynyl, C 2 -C 10 -allylaryl, aryl, halo, OH or heterocyclyl, wherein the alkyl, alkenyl, alkynyl, alkylaryl, aryl and heterocyclyl, is optionally substituted with one to three members selected from the group consisting of halo, amino, hydroxy, hydroxyalkyl, alkylamide, arylamide, hydroxyalkylamide, nitrilo, aminoalkylamide, nitriloaryl, alkoxy (in particular, methoxy), heterocyclic alkyl in which heterocycle is a 5- to 7-membered ring and in which the hetero atom is O, N or S.
  • Preferred JAK kinase inhibitors include, e.g.,
  • a pharmaceutical combination comprising: a) at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors; and b) at least one JAK kinase inhibitor.
  • a method for treating or preventing proliferative disease in a subject in need thereof comprising co-administration to said subject, e.g., concomitantly or in sequence, of a therapeutically effective amount of at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors and at least one JAK3 kinase inhibitor, e.g., as disclosed above.
  • proliferative diseases include e.g. tumors, psoriasis, restenosis, sclerodermitis and fibrosis.
  • a pharmaceutical combination as defined under 1) above e.g., for use in a method as defined under 2) above.
  • Utility of the combination of the invention in a method as hereinabove specified may be demonstrated in animal test methods as well as in clinic, for example in accordance with the methods hereinafter described.
  • Suitable clinical studies are, e.g., open label, dose escalation studies in patients with proliferative diseases. Such studies prove in particular the synergism of the active ingredients of the combination of the invention.
  • the beneficial effects on psoriasis or multiple sclerosis can be determined directly through the results of these studies which are known as such to a person skilled in the art. Such studies are, in particular, suitable to compare the effects of a monotherapy using the active ingredients and a combination of the invention.
  • the dose of agent (a) is escalated until the Maximum Tolerated Dosage is reached, and agent (b) is administered with a fixed dose.
  • the agent (a) is administered in a fixed dose and the dose of agent (b) is escalated.
  • Each patient receives doses of the agent (a) either daily or intermittent.
  • the efficacy of the treatment can be determined in such studies, e.g., after 12, 18 or 24 weeks by evaluation of symptom scores every 6 weeks.
  • a pharmaceutical combination of the invention results not only in a beneficial effect, e.g., a synergistic therapeutic effect, e.g., with regard to alleviating, delaying progression of or inhibiting the symptoms, but also in further surprising beneficial effects, e.g., fewer side-effects, an improved quality of life or a decreased morbidity, compared with a monotherapy applying only one of the pharmaceutically active ingredients used in the combination of the invention.
  • a beneficial effect e.g., a synergistic therapeutic effect, e.g., with regard to alleviating, delaying progression of or inhibiting the symptoms
  • further surprising beneficial effects e.g., fewer side-effects, an improved quality of life or a decreased morbidity
  • a further benefit is that lower doses of the active ingredients of the combination of the invention can be used, e.g., that the dosages need not only often be smaller but are also applied less frequently, which may diminish the incidence or severity of side effects. This is in accordance with the desires and requirements of the patients to be treated.
  • co-administration or “combined administration” or the like as utilized, herein, are meant to encompass administration of the selected therapeutic agents to a single patient, and are intended to include treatment regimens in which the agents are not necessarily administered by the same route of administration or at the same time.
  • agent (a) and agent (b) may be administered together, one after the other or separately in one combined unit dosage form or in two separate unit dosage forms.
  • the unit dosage form may also be a fixed combination.
  • compositions for separate administration of agent (a) and agent (b) or for the administration in a fixed combination may be prepared in a manner known per se and are those suitable for enteral, such as oral or rectal; and parenteral administration to mammals (warm-blooded animals) including humans, comprising a therapeutically effective amount of at least one pharmacologically active combination partner alone, e.g., as indicated above, or in combination with one or more pharmaceutically acceptable carriers or diluents, especially suitable for enteral or parenteral application.
  • Suitable pharmaceutical compositions contain, e.g., from about 0.1% to about 99.9%, preferably from about 1% to about 60%, of the active ingredient(s).
  • Pharmaceutical preparations for the combination therapy for enteral or parenteral administration are, e.g., those in unit dosage forms, such as sugar-coated tablets, tablets, capsules or suppositories, or ampoules. If not indicated otherwise, these are prepared in a manner known perse, e.g., by means of conventional mixing, granulating, sugar-coating, dissolving or lyophilizing processes. It will be appreciated that the unit content of a combination partner contained in an individual dose of each dosage form need not in itself constitute an effective amount since the necessary effective amount can be reached by administration of a plurality of dosage units.
  • a therapeutically effective amount of each of the combination partner of the combination of the invention may be administered simultaneously or sequentially and in any order, and the components may be administered separately or as a fixed combination.
  • the method of preventing or treating proliferative diseases according to the invention may comprise: (i) administration of the first agent (a) in free or pharmaceutically acceptable salt form; and (ii) administration of an agent (b) in free or pharmaceutically acceptable salt form, simultaneously or sequentially in any order, in jointly therapeutically effective amounts, preferably in synergistically effective amounts, e.g., in daily or intermittently dosages corresponding to the amounts described herein.
  • the individual combination partners of the combination of the invention may be administered separately at different times during the course of therapy or concurrently in divided or single combination forms.
  • administering also encompasses the use of a pro-drug of a combination partner that convert in vivo to the combination partner as such.
  • the instant invention is therefore to be understood as embracing all such regimens of simultaneous or alternating treatment and the term "administering" is to be interpreted accordingly.
  • each of the combination partners employed in the combination of the invention may vary depending on the particular compound or pharmaceutical composition employed, the mode of administration, the condition being treated, the severity of the condition being treated.
  • the dosage regimen of the combination of the invention is selected in accordance with a variety of factors including the route of administration and the renal and hepatic function of the patient.
  • a clinician or physician of ordinary skill can readily determine and prescribe the effective amount of the single active ingredients required to alleviate, counter or arrest the progress of the condition.
  • Optimal precision in achieving concentration of the active ingredients within the range that yields efficacy without toxicity requires a regimen based on the kinetics of the active ingredients' availability to target sites.
  • Agents (a) and (b) may be administered by any conventional route, in particular enterally, e.g., orally, e.g., in the form of tablets, capsules, drink solutions or parenterally, e.g., in the form of injectable solutions or suspensions.
  • Suitable unit dosage forms for oral administration comprise from ca. 0.02-50 mg active ingredient, usually 0.1-30 mg, e.g., agent (a) or (b), together with one or more pharmaceutically acceptable diluents or carriers therefore.
  • Agent (b) may be administered to a human in a daily dosage range of 0.5-1000 mg.
  • Suitable unit dosage forms for oral administration comprise from ca. 0.1-500 mg active ingredient, together with one or more pharmaceutically acceptable diluents or carriers therefore.
  • a pharmaceutical combination of the invention results not only in a beneficial effectrerg., ⁇ synergistic therapeutic effect, e.g., with regard to inhibiting the unregulated proliferation of haematological stem cells or slowing down the progression of leukemias, such as CML or AML, or the growth of tumors, but also in further surprising beneficial effects, e.g., less side effects, an improved quality of life or a decreased morbidity, compared to a monotherapy applying only one of the pharmaceutically active ingredients used in the combination of the invention.
  • a further benefit is that lower doses of the active ingredients of the combination of the invention can be used, e.g., that the dosages need not only often be smaller but are also applied less frequently, or can be used in order to diminish the incidence of side effects. This is in accordance with the desires and requirements of the patients to be treated.
  • the utility of the combinations of the present invention inhibiting the proliferation of leukemia cells for the treatment of leukemia can be demonstrated, e.g., in the proliferation test using Bcr-Abl transfected 32D cells as follows:
  • Bcr-Abl-transfected 32D cells (32D pGD p210 Bcr-Abl; Bazzoni et al., J CHn Invest, Vol. 98, No. 2, pp. 521-528 (1996)) are cultured in RPMI 1640 (BioConcept, Allschwil, Switzerland; Cat. No. 1-41 F01), 10% fetal calf serum, 2 mM glutamine. 10000 cells in 50 ⁇ L per well are seeded into flat bottom 96-well tissue culture plates. Complete medium alone (for controls) or serial three-fold dilutions of compounds are added in triplicates to a final volume of 100 ⁇ L and the cells are incubated at 37°C, 5% CO 2 for 65-72 hours.
  • the cell proliferation reagent WST-1 (Roche Diagnostics GmbH; Cat. No. 1 664 807) is added at 10 ⁇ L per well followed by 2 hours incubation at 37°C. Color development, depending on the amount of living cells, is measured at 440 nm. The effect for each compound is calculated as percent inhibition of the value (OD 440 ) obtained for the control cells (100%) and plotted against the compound concentrations. The IC 50 S are calculated from the dose response curves by graphic extrapolation.
  • the proliferation test using Bcr-Abl transfected 32D cells with a COMBINATION OF THE INVENTION is carried out as described above with the following changes. Two combination partners are mixed in fixed ratios. Three-fold serial dilutions of this mixture or the combination partners alone are added to the cells seeded in 96-well tissue culture plates as described above. The effects on 32D-Bcr-Abl cell proliferation of a COMBINATION OF THE INVENTION is evaluated and compared with the effects of the single combination partners using CalcuSyn, a dose-effect analyzer software for single and multiple drugs (distributed by Biosoft, Cambridge).
  • JAK inhibitor is selected from the group consisting of:
  • the Bcr-Abl, Flt-3 and RAF kinase inhibitor is selected from:
  • proliferative disease includes but is not restricted to tumors, psoriasis, restenosis, sclerodermas and fibrosis.
  • haematological malignancy refers in particular to leukemias, especially those expressing Bcr-Abl, c-Kit or Flt-3, and includes, but is not limited to, chronic myelogenous leukemia and acute lymphocyte leukemia (ALL), especially the Philadelphia chromosome positive acute lymphocyte leukemia (Ph+ALL), as well as STI57l-resistant leukemia.
  • ALL chronic myelogenous leukemia and acute lymphocyte leukemia
  • Ph+ALL Philadelphia chromosome positive acute lymphocyte leukemia
  • a solid tumor disease especially means ovarian cancer, breast cancer, cancer of the colon and generally the gastrointestinal tract, cervix cancer, lung cancer, e.g., small-cell lung cancer and non-small-cell lung cancer, head and neck cancer, bladder cancer, cancer of the prostate or Kaposi's sarcoma.
  • Protein kinase dependent diseases are especially proliferative diseases, preferably benign or especially malignant tumours (e.g., carcinoma of the kidneys, liver, adrenal glands, bladder, breast, stomach, ovaries, colon, rectum, prostate, pancreas, lungs, vagina or thyroid, sarcoma, glioblastomas and numerous tumours of the neck and head, as well as leukemias). They are able to bring about the regression of tumours and to prevent the formation of tumor metastases and the growth of (also micro)metastases.
  • the combinations of the present invention in the treatment of diseases of the immune system insofar as several or, especially, individual tyrosine protein kinases are involved; furthermore, the combinations of the present invention can be used also in the treatment of diseases of the central or peripheral nervous system where signal transmission by at least one tyrosine protein kinase, especially selected from those mentioned specifically, is involved.
  • Flt-3 (FMD-like tyrosine kinase) is especially expressed in hematopoietic progenitor cells and in progenitors of the lymphoid and myeloid series.
  • Aberrant expression of the Flt-3 gene has been documented in both adult and childhood leukemias including AML (acute myelogenous leukemia), AML with trilineage myelodysplasia (AML/TMDS), ALL, CML (chronic myelogenous leukemia) and myelodysplastic syndrome (MDS), which are therefore the preferred diseases to be treated with compounds of the formula (I).
  • AML acute myelogenous leukemia
  • AML/TMDS trilineage myelodysplasia
  • ALL CML (chronic myelogenous leukemia)
  • MDS myelodysplastic syndrome
  • Activating mutations in Flt-3 have been found in approximately 25-30% of patients with AML.
  • Flt-3 inhibitors are especially of use in the therapy of this type of diseases (see Tse et al., Leukemia, Vol. 15, No. 7, pp. 1001-1010 (2001); Tomoki et al., Cancer Chemother Pharmacol, Vol. 48, Suppl. 1 , pp. S27-S30 (2001); Birkenkamp et al., Leukemia, Vol. 15, No. 12, pp. 1923-1921 (2001); Kelly et al., Neoplasia, Vol. 99, No. 1, pp. 310-318 (2002)).
  • hematopoietic stem cells hematopoietic stem cells
  • the latter encodes the oncogenic Bcr-Abl fusion protein.
  • ABL encodes a tightly regulated protein tyrosine kinase, which plays a fundamental role in regulating cell proliferation, adherence and apoptosis
  • the Bcr-Abl fusion gene encodes as constitutively activated kinase, which transforms HSCs to produce a phenotype exhibiting deregulated clonal proliferation, reduced capacity to adhere to the bone marrow stroma and a reduces apoptotic response to mutagenic stimuli, which enable it to accumulate progressively more malignant transformations.
  • Bcr-Abl ATP-competitive inhibitors of Bcr-Abl which prevent the kinase from activating mitogenic and anti-apoptotic pathways (e.g., P-3 kinase and STAT5), leading to the death of the Bcr- Abl phenotype cells and thereby providing an effective therapy against CML.
  • the combinations of the present invention useful as Bcr-Abl inhibitors are thus especially appropriate for the therapy of diseases related to its ⁇ verexpression, especially leukemias, such as leukemias, e.g., CML or ALL.
  • the RAF kinase inhibiting property of the combinations of the present invention makes them useful as therapeutic agents for the treatment for proliferative diseases characterized by an aberrant MAP kinase signaling pathway, particularly many cancers characterized by overexpression of RAF kinase or an activating mutation of RAF kinase, such as melanoma having mutated B-RAF 1 especially wherein the mutated B-RAF is the V599E mutant.
  • the present invention also provides a method of treating other conditions characterized by an aberrant MAP kinase signaling pathway, particularly where B-RAF is mutated, e.g., benign Nevi moles having mutated B-RAF, with the combinations of the present invention.
  • the disease characterized by excessive signaling through the MAP kinase signaling pathway is a proliferative disease, particularly a cancer characterized by increased RAF kinase activity, e.g., one which overexpresses wild-type B- or C-RAF kinase, or that expresses an activating mutant RAF kinase, e.g., a mutant B-RAF kinase.
  • Cancers wherein a mutated RAF kinase has been detected include melanoma, colorectal cancer, ovarian cancer, gliomas, adenocarcinomas, sarcomas, breast cancer and liver cancer. Mutated B-RAF kinase is especially prevalent in many melanomas.
  • a sample of diseased tissue is taken from the patient, e.g., as a result of a biopsy or resection, and tested to determine whether the tissue produces a mutant RAF kinase, such as a mutant B-RAF kinase or overexpresses a wild- type RAF kinase, such as wild-type B- or C-RAF kinase. If the test indicates that mutant RAF kinase is produced or that a RAF kinase is overproduced in the diseased tissue, the patient is treated by administration of an effective RAF-inhibiting amount of a RAF inhibitor compound described herein.
  • a mutant RAF kinase such as a mutant B-RAF kinase or overexpresses a wild- type RAF kinase, such as wild-type B- or C-RAF kinase. If the test indicates that mutant RAF kinase is produced or that a RAF kinase is overproduced in the
  • combinations of the present invention described herein for the preparation of a medicament for the treatment of melanoma which comprises: (a) testing melanoma tissue from the patient to determine whether the melanoma tissue expresses mutant RAF kinase or overexpresses a wild-type RAF kinase; and (b) treating the patient if the melanoma tissue is found to overexpress a wild-type RAF kinase or express an activating mutant B-RAF kinase with an effective RAF kinase inhibiting amount of combinations of the present invention.
  • the present invention further relates to the treatment of a disease characterized by excessive signaling in the MAP kinase signaling pathway attributed to a cause other than an activating mutation in or overexpression of a RAF kinase.
  • the combinations of the present invention primarily inhibit the growth of blood vessels and are thus, e.g., effective against a number of diseases associated with deregulated angiogenesis, especially diseases caused by ocular neovascularisation, especially retinopathies, such as diabetic retinopathy or age-related macula degeneration, psoriasis, haemangioblastoma, such as haemangioma, mesangial cell proliferative disorders, such as chronic or acute renal diseases, e.g., diabetic nephropathy, malignant nephrosclerosis, thrombotic microangiopathy syndromes or transplant rejection, or especially inflammatory renal disease, such as glomerulonephritis, especially mesangioproliferative glomerulonephritis, haemolytic-uraemic syndrome, diabetic nephropathy, hypertensive nephrosclerosis, atheroma, arterial restenosis, autoimmune diseases, diabetes, endometriosis, chronic asthma, and
  • an inhibitor of FAK is likely to be a drug for anti-tumor growth and jiifilas.tasis.Jl ⁇ e_r ⁇ mpjiurj£ls_ar ⁇ JhusJ ⁇ dJ.cated,_e.g,, to_pceventand/or treat a vertebrate and more particularly a mammal, affected by a neoplastic disease, in particular, breast tumor, cancer of the bowel (colon and rectum), stomach cancer and cancer of the ovary and prostate, non-small cell lung cancer, small cell lung cancer, cancer of liver, melanoma, bladder tumor and cancer of head and neck.
  • a neoplastic disease in particular, breast tumor, cancer of the bowel (colon and rectum), stomach cancer and cancer of the ovary and prostate, non-small cell lung cancer, small cell lung cancer, cancer of liver, melanoma, bladder tumor and cancer of head and neck.
  • the invention relates to a method of treating myeloma, especially myeloma which is resistant to conventional chemotherapy.
  • myeloma relates to a tumour composed of cells of the type normally found in the bone marrow.
  • multiple myeloma means a disseminated malignant neoplasm of plasma cells which is characterized by multiple bone marrow tumor foci and secretion of an M component (a monoclonal immunoglobulin fragment), associated with widespread osteolytic lesions resulting in bone pain, pathologic fractures, hypercalcaemia and normochromic normocytic anaemia. Multiple myeloma is incurable by the use of conventional and high-dose chemotherapies.
  • the invention relates to a method of treating myeloma, especially myeloma which is resistant to conventional chemotherapy.
  • a preferred embodiment of the present invention is the combination of a RAF inhibitor and a JAK kinase inhibitor for the treatment of myelomas, especially multiple myeloma. Most especially preferred is the combination of a RAF inhibitor selected from:

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Abstract

The invention provides a pharmaceutical combination comprising: a) at least one agent selected from Bcr-Abl, Flt-3, FAK and RAF kinase inhibitors; and b) at least one JAK kinase inhibitor and a method for treating or preventing a proliferative disease using such a combination.

Description

COMBINATIONS OF JAK INHIBITORS
The present invention relates to a pharmaceutical combination comprising at least one subtype selective or subtype non-selective JAK kinase inhibitor and at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors, and the uses of such a combination, e.g., in proliferative diseases, e.g., tumors, myelomas, leukemias, psoriasis, restenosis, sclerodermitis and fibrosis.
In spite of numerous treatment options for proliferative disease patients, there remains a need for effective and safe antiproliferative agents and a need for their preferential use in combination therapy.
Summary of the Invention
It has now been found that a combination comprising at least one at least one JAK kinase inhibitor, targeting one or more of JAK1 , JAK2, JAK3 or TYK2, and at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors, e.g., as defined below, has a beneficial effect on proliferative diseases, e.g., tumors, myelomas, leukemias, psoriasis, restenosis, sclerodermitis and fibrosis.
Detailed Description of the Invention
Bcr-Abl is a fusion gene which encodes a 210-kd protein with deregulated tyrosine kinase activity and is present in the leukemia cells of almost every patient with chronic myeloid leukemia (CML) and approximately 33% of patients with acute lymphoblastic leukemia (ALL). Bcr-Abl inhibitors are, e.g., compounds having an IC50 value <5 μM, preferably <1 μM, more preferably <0.1 μM in the following assays:
Test for activity against Bcr-Abl: The murine myeloid progenitor cell line 32Dcl3 transfected with the p210 Bcr-Abl expression vector pGDp210Bcr/Abl (32D-Bcr/Abl) was obtained from J. Griffin (Dana Farber Cancer Institute, Boston, MA, USA). The cells express the fusion Bcr-Abl protein with a constitutively active AbI kinase and proliferate growth factor independent. The cells are expanded in RPMI 1640 (AMIMED), 10% fetal calf serum, 2 mM glutamine (Gibco) ("complete medium") and a working stock is prepared by freezing aliquots of 2 x 106 cells per vial in freezing medium (95% FCS, 5% DMSO (SIGMA)). After thawing, the cells are used during maximally 10-12 passages for the experiments.
For cellular assays, compounds are dissolved in DMSO and diluted with complete medium to yield a starting concentration of 10 μM followed by preparation of serial 3-fold dilutions in complete medium. 200O00 32D-Bcr/Abl cells in 50 μl_ complete medium are seeded per well in 96-well, round-bottom tissue culture plates. Fifty (50) μl_ per well of serial 3-fold dilutions of the test compound are added to the cells in triplicates. Untreated cells are used as control. The compound is incubated together with the cells for 90 min. at 37°C, 5% CO2, followed by centrifugation of the tissue culture plates at 1 ,300 rpm (Beckmann GPR centrifuge) and removal of the supernatants by careful aspiration taking care not to remove any of the pelleted cells. The cell pellets are lysed by addition of 150 μl_ lysis buffer (50 mM Tris/HCI, pH 7.4, 150 mM sodium chloride, 5 mM EDTA, 1 mM EGTA, 1 % NP-40, 2 mM sodium ortho-vanadate, 1 mM PMSF, 50 μg/mL aprotinin and 80 μg/mL leupeptin) and either used immediately for the ELISA or stored frozen in the plates at -200C until usage.
Black ELISA plates (Packard HTRF-96 black plates) are precoated over night at 4°C with 50 ng/well of the rabbit polyclonal anti-abl-SH3 domain Ab 06-466 from Upstate in 50 μL PBS. After washing 3 times with 200 μL/well PBS containing 0.05% Tween20 (PBST) and 0.5% TopBlock (Juro), residual protein binding sites are blocked with 200 μL/well PBST, 3% TopBlock for 4 hours at room temperature followed by incubation with 50 μL lysates of untreated or compound-treated cells (20 μg total protein per well) for 3-4 hours at 40C. After 3 washings, 50 μL/well anti-phosphotyrosine Ab PY20(AP) labeled with alkaline phosphatase (Zymed) diluted to 0.2 μg/mL in blocking buffer is added and incubated overnight (40C). For all incubation steps the plates are covered with plate sealers (Costar). Finally, the plates are washed another three times with washing buffer and once with deionized water before the addition of 90 μL/well of the AP-substrate CDPStar RTU with Emerald II. After being sealed with Packard TopSeal™-A plate sealers, the plates are incubated for 45 min. at room temperature in the dark and luminescence is quantified by measuring counts per second (CPS) with a Packard Top Count Microplate Scintillation Counter (Top Count).
The difference between the ELISA-readout (CPS) obtained for with the lysates of the untreated 32D-Bcr/Abl cells and the readout for the assay-background (all components, but without cell lysate) is calculated and taken as 100% reflecting the constitutively phosphorylated Bcr-Abl protein present in these cells. The activity of the compound on the Bcr-Abl kinase activity is expressed as percent reduction of the Bcr-Abl phosphorylation. The values for the IC50 and IC90 are determined from the dose response curves by graphical extrapolation.
Suitable Bcr-Abl inhibitors include e.g.:
- Compounds as disclosed in U.S. Patent No. 5,521 ,184, e.g., an Λ/-phenyl-2- pyrimidine-amine derivative of formula (I):
Figure imgf000004_0001
wherein
Ri is 4-pyrazinyl, 1 -methyl- 1H-pyrrolyl, amino- or amino-lower alkyl-substituted phenyl wherein the amino group in each case is free, alkylated or acylated, 1H-indolyl or 1H-imidazolyl bonded at a 5-membered ring carbon atom, or unsubstituted or lower alkyl-substituted pyridyl bonded at a ring carbon atom and unsubstituted or substituted at the nitrogen atom by oxygen;
R2 and R3 are each independently of the other hydrogen or lower alkyl,
"6rτe~orfwb~oflrTe radlcals~R^"R5, R^, R7 and R8 are each rϊitro, flϋδrδ-substitϋted lower alkoxy or a radical of the formula
-N(R9)-C(=X)-(Y)n-R10 , wherein
R9 is hydrogen or lower alkyl;
X is oxo, thio, imino, Λ/-lower alkyl-imino, hydroximino or O-lower alkyl-hydroximino; Y is oxygen or the group NH; n is O or 1 ; and
R10 is an aliphatic radical having at least 5 carbon atoms, or an aromatic, aromatic- aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, heterocyclic or heterocyclic- aliphatic radical; - A -
and the remaining radicals R4, R5, R6, R7 and R8 are each independently of the others hydrogen, lower alkyl that is unsubstituted or substituted by free or alkylated amino, piperazinyl, piperidinyl, pyrrolidinyl or by morpholinyl, or lower alkanoyl, trifluoromethyl, free, etherified or esterifed hydroxy, free, alkylated or acylated amino or free or esterified carboxy; or a salt of such a compound having at least one salt-forming group.
Examples of compounds of formula (I) include:
Λ/-(3-nitro-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(4-chlorobenzoylamido)-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-benzoylamido-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(2-pyridyl)carboxamido-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(3-pyridyl)carboxamido-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(4-pyridyl)carboxamido-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; /V-(3-pentafluoro-benzoylamido-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(2-carboxy-benzoylamido)-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-n-hexanoylamido-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-nitro-phenyl)-4-(2-pyridyl)-2-pyrimidine-amine; Λ/-(3-nitro-phenyl)-4-(4-pyridyl)-2-pyrimidine-amine; Λ/-[3-(2-methoxy-benzoylamido)-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(4-fluoro-benzoylamido)-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(4-cyano-benzoylamido)-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(2-thienylcarboxamido)-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-cyclohexylcarboxamido-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(4-methyl-benzoylamido)-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[3-(4-chloro-benzoylamido)-phenyl]-4-(4-pyridyl)-2-pyrimidine-amine; . Λ/-{3-[4-(4-methyl-piperazinomethyl)-benzoylamido]-phenyl}-4-(3-pyridyl)-2-pyrimidine- amine;
Λ/-(5-benzoylamido-2-methyl-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-{5-[4-(4-methyl-piperazino-methyl)-benzoylamido]-2-methyl-phenyl}-4-(3-pyridyl)-2- pyrimidine-amine;
Λ/-[5-(4-methyl-benzoylamido)-2-methyl-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[5-(2-naphthoylamido)-2-methyl-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[5-(4-chloro-benzoylamido)-2-methyl-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-[5-(2-methoxy-benzoylamido)-2-methyl-phenyl]-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-trifluoromethoxy-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-[1 , 1 ,2,2-tetrafluoro-ethoxy]-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-nitro-5-methyl-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-nitro-5-trifluoromethyl-phenyl)-4-(3-pyridyl)-2-pyrimidine-amine; Λ/-(3-nitro-phenyl)-4-(Λ/-oxido-3-pyridyl)-2-pyrimidine-amine; Λ/-(3-benzoylamido-5-methyl-phenyl)-4-(Λ/-oxido-3-pyridyl)-2-pyrimidine-amine; or pharmaceutically acceptable salts thereof.
- Additional Bcr-Abl inhibitor compounds include those disclosed in WO 04/005281 , e.g., a compound of formula (II):
Figure imgf000006_0001
wherein
R1 represents hydrogen, lower alkyl, lower alkoxy-lower alkyl, acyloxy-lower alkyl, carboxy-lower alkyl, lower alkoxycarbonyl-lower alkyl or phenyl-lower alkyl;
R2 represents hydrogen, lower alkyl, optionally substituted by one or more identical or different radicals R3, cycloalkyl, benzcycloalkyl, heterocyclyl, an aryl group, or a mono- or bicyclic heteroaryl group comprising zero, one, two or three ring nitrogen atoms and zero or one oxygen atom and zero or one sulfur atom, which groups in each case are unsubstituted or mono- or polysubstituted;
R3 represents hydroxy, lower alkoxy, acyloxy, carboxy, lower alkoxycarbonyl, carbamoyl, Λ/-mono- or Λ/,Λ/-di-substituted carbamoyl, amino, mono- or di-substituted amino, cycloalkyl, heterocyclyl, an aryl group, or a mono- or bi-cyclic heteroaryl group comprising zero, one, two or three ring nitrogen atoms and zero or one oxygen atom and zero or one sulfur atom, which groups in each case are unsubstituted or mono- or poly-substituted, or wherein R1 and R2 together represent alkylene with four, five or six carbon atoms optionally mono- or di-substituted by lower alkyl, cycloalkyl, heterocyclyl, phenyl, hydroxy, lower alkoxy, amino, mono- or di-substituted amino, oxo, pyridyl, pyrazinyl or pyrimidinyl; benzalkylene with four or five carbon atoms; oxaalkylene with one oxygen and three or four carbon atoms; or azaalkylene with one nitrogen and three or four carbon atoms wherein nitrogen is unsubstituted or substituted by lower alkyl, phenyl-lower alkyl, lower alkoxycarbonyl-lower alkyl, carboxy-lower alkyl, carbamoyl- lower alkyl, Λ/-mono- or Λ/,Λ/-di-substituted carbamoyl-lower alkyl, cycloalkyl, lower alkoxycarbonyl, carboxy, phenyl, substituted phenyl, pyridinyl, pyrimidinyl or pyrazinyl; and
R4 represents hydrogen, lower alkyl or halogen; and a Λ/-oxide or a pharmaceutically acceptable salt of such a compound.
Examples of compound according to formula (II) include:
4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[5-(4-morpholinyl)-3-
(trifluoromethyl)phenyl]benzamide; 4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[5-(2-methyl-1/-/-imidazol-1-yl)-3-
(trifluoromethyl)phenyl]benzamide; 4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[5-(4-methyl-1H-imidazol-1-yl)-3-
(trifluoromethyl)phenyl]benzamide; 4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[5-(5-methyl-1H-imidazol-1-yl)-3-
(trifluoromethyl)phenyl]benzamide; " 4rmBth7l^-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[3-(4-methyl=1 -piperazinyl)-5-
(trifluoromethyl)phenyl]benzamide; 4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[2-(1-pyrrolidinyl)-5-
(trifluoromethyl)phenyl]benzamide; and pharmaceutically acceptable salts thereof.
- Additional Bcr-Abl compounds include those disclosed in EP2005/009967 filed September 16, 2005, namely compounds of the formula (III)
Figure imgf000007_0001
wherein
R1 is H, halo, -C0-C7-O-R3, -C0-C7-NR4R5 or -C(=O)-R6;
R2 is substituted C3-C8-cycloalkyl, substituted aryl or substituted heterocyclyl;
R3 is H or unsubstituted or substituted lower alkyl;
R4 and R5 are independently selected from the group consisting of H, unsubstituted or substituted lower alkyl; lower alkyl-carbonyl, wherein the lower alkyl moiety is optionally substituted and lower alkoxy-carbonyl, wherein the lower alkyl moiety is optionally substituted;
R6 is H, unsubstituted or substituted lower alkyl, lower alkoxy, wherein the lower alkyl moiety is optionally substituted or unsubstituted, mono- or di-substituted amino;
A, B and X are independently selected from =C(R7)- or N; E, G and T are independently selected from =C(R8)- or N;
R7 and R8 are independently selected from the group consisting of H, halo and unsubstituted or substituted lower alkyl;
Y is -0-, -S-, -S(O)-, -S(O)2-, -CH2- or -CH2-CH2-;
Z is CH or N and Q is CrC4-alkylene or C2-C4-alkenylene, wherein C-ι-C4-alkylene or C2-C4-alkenylene optionally may be substituted and wherein one or more of the carbon atoms of said CrC4-alkylene or C2-C4-alkenylene chain optionally may be replaced by a heteroatom independently selected from nitrogen, oxygen and sulfur; and the bond between Q and Z characterized by a dotted line is a single bond; with the proviso that if Z is N, Q is not unsubstituted unbranched CrC4-alkylene, or
Z is C and Q is as defined above, wherein the bond between Q and Z characterized by a dotted line is a double bond; and
W is either not present or d-C3-alkylene; or a tautomer thereof, or a salt thereof.
Especially preferred is 6-(6-acetylamino-pyrimidin-4-yloxy)-naphthalene-1-carboxylic acid ^-(^methyl-piperazin-i-ylmethyO-S-trifluoromethyl-phenylJ-amide. - Additional Bcr-Abl compound include those disclosed in EP2005/010408 filed September 27, 2005 and USSN 60/578,491 filed June 10, 2004.
Flt-3 inhibitors are, e.g., compounds having an IC50 value in the range of 1-10'0OO nM, preferably in the range of 1-100 nM in the following assays:
Flt-3 kinase inhibition is determined as follows: The baculovirus donor vector pFbacGOI (GIBCO) is used to generate a recombinant baculovirus expressing the amino acid region amino acids 563-993 of the cytoplasmic kinase domain of human Flt-3. The coding sequence for the cytoplasmic domain of Flt-3 is amplified by PCR from human c-DNA libraries (Clontech). The amplified DNA fragments and the pFbacGOI vector are made compatible for ligation by digestion with BamH1 and Hindlll. Ligation of these DNA fragments results in the baculovirus donor plasmid Flt-3(1.1). The production of the viruses, the expression of proteins in Sf9 cells and the purification of the GST-fused proteins are performed as follows:
Production of virus: Transfer vector (pFbacGOI -Flt-3) containing the Flt-3 kinase domain is transfected into the DHIOBac cell line (GIBCO) and the transfected cells are plated on selective agar plates. Colonies without insertion of the fusion sequence into the viral genome (carried by the bacteria) are blue. Single white colonies are picked and viral DNA (bacmid) is isolated from the bacteria by standard plasmid purification procedures. Sf9 or Sf21 cells (American Type Culture Collection) are then transfected in flasks with the viral DNA using Cellfectin reagent.
Determination of small scale protein expression in Sf9 cells: Virus containing media is collected from the transfected cell culture and used for infection to increase its titre. Virus containing media obtained after two rounds of infection is used for large-scale protein expression. For large-scale protein expression 100 cm2 round tissue culture plates are seeded with 5 x 107 cells/plate and infected with 1 ml_ of virus-containing media (approximately 5 MOIs). After 3 days, the cells are scraped off the plate and centrifuged at 500 rpm for 5 min. Cell pellets from 10-20, 100 cm2 plates, are re-suspended in 50 ml_ of ice-cold lysis buffer (25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1% NP-40, 1 mM DTT, 1 mM PMSF). The cells are stirred on ice for 15 min. and then centrifuged at 5,000 rpms for 20 min. Purification of GST-tagged proteins: The centrifuged cell lysate is loaded onto a 2 ml_ glutathione-sepharose column (Pharmacia) and washed three times with 10 ml_ of 25 mM Tris-HCI, pH 7.5, 2 mM EDTA, 1 mM DTT, 200 mM NaCI. The GST-tagged protein is then eluted by 10 applications (1 ml_ each) of 25 mM Tris-HCI, pH 7.5, 10 mM reduced- glutathione, 100 mM NaCI, 1 mM DTT, 10% glycerol and stored at -700C.
Measurement of enzyme activity: Tyrosine protein kinase assays with purified GST-Flt-3 are carried out in a final volume of 30 μL containing 200-1 ,800 ng of enzyme protein (depending on the specific activity), 20 mM Tris-HCI, pH 7.6, 3 mM MnCI2, 3 mM MgCI2, 1 mM DTT, 10 μM Na3VO4, 3 μg/mL poly(Glu,Tyr) 4:1 , 1 % DMSO, 8.0 μM ATP and 0.1 μCi [γ33P] ATP). The activity is assayed in the presence or absence of inhibitors, by measuring the incorporation of 33P from [γ33P] ATP into the poly(Glu,Tyr) substrate. The assay (30 μL) is carried out in 96-well plates at ambient temperature for 20 min. under conditions described below and terminated by the addition of 20 μL of 125 mM EDTA. Subsequently, 40 μL of the reaction mixture is transferred onto Immobilon-PVDF membrane (Millipore, Bedford, MA, USA) previously soaked for 5 min. with methanol, rinsed with water, then soaked for 5 min. with 0.5% H3PO4 and mounted on vacuum manifold with disconnected vacuum source. After spotting all samples, vacuum is connected and each well rinsed with 200 μL 0.5% H3PO4. Membranes are removed and washed 4 x on a shaker with 1.0% H3PO4, once with ethanol. Membranes are counted after drying at ambient temperature, mounting in Packard TopCount 96-well frame, and addition of 10 μL/well of Microscint TM (Packard). IC50 values are calculated by linear regression analysis of the percentage inhibition of each compound in duplicate,-at-four-concentrations (usually-OτO-1 -0-.-1 , 1 and 10 μM). One unit of protein kinase activity is defined as 1 nmole of 33P ATP transferred from [γ33P] ATP to the substrate protein per minute per mg of protein at 370C. The compounds of the formula (I) here shown IC50 values in the range between 0.005 and 20 μM, preferably between 0.01 and 10 μM. Suitable Flt-3 inhibitors include, e.g.,
- Compounds as disclosed in WO 03/037347, e.g., staurosporine derivatives of formula (IV) or (V):
or
Figure imgf000011_0001
wherein (V) is the partially hydrogenated derivative of compound (IV), or
Figure imgf000012_0001
.or
Figure imgf000013_0001
wherein
Ri and R2 are, independently of one another, unsubstituted or substituted alkyl, hydrogen, halogen, hydroxy, etherified or esterified hydroxy, amino, mono- or di-substituted amino, cyano, nitro, mercapto, substituted mercapto, carboxy, esterified carboxy, carbamoyl, Λ/-mono- or Λ/,Λ/-di-substituted carbamoyl, sulfo, substituted sulfonyl, aminosulfonyl or Λ/-mono- or Λ/,Λ/-di-substituted aminosulfonyl; n and m are, independently of one another, a number from and including 0 to and including 4; n' and m' are, independently of one another, a number from and including 0 to and including 4;
R3, R4, R8 and R10 are, independently of one another, hydrogen, -O", acyl with up to 30 carbon atoms, an aliphatic, carbocyclic, or carbocyclic-aliphatic radical with up to 29 carbon atoms in each case, a heterocyclic or heterocyclic-aliphatic radical with up to 20 carbon atoms in each case, and in each case up to 9 heteroatoms, an acyl with up to 30 carbon atoms, wherein R4 may also be absent, or if R3 is acyl with up to 30 carbon atoms, R4 is not an acyl; p is 0 if R4 is absent, or is 1 if R3 and R4 are both present and in each case are one of the aforementioned radicals; R5 is hydrogen, an aliphatic, carbocyclic, or carbocyclic-aliphatic radical with up to
29 carbon atoms in each case, or a heterocyclic or heterocyclic-aliphatic radical with up to 20 carbon atoms in each case, and in each case up to 9 heteroatoms, or acyl with up to 30 carbon atoms;
R7, R6 and R9 are acyl or -(lower alkyl) -acyl, unsubstituted or substituted alkyl, hydrogen, halogen, hydroxy, etherified or esterified hydroxy, amino, mono- or di-substituted amino, cyano, nitro, mercapto, substituted mercapto, carboxy, carbonyl, carbonyldioxy, esterified carboxy, carbamoyl, Λ/-mono- or Λ/,Λ/-di-substituted carbamoyl, sulfo, substituted sulfonyl, aminosulfonyl or Λ/~mono- or Λ/,Λ/-di- substituted aminosulfonyl;
X stands for 2 hydrogen atoms, for 1 hydrogen atom and hydroxy, for O or for hydrogen and lower alkoxy;
Z stands for hydrogen or lower alkyl; and either the two bonds characterised by wavy lines are absent in ring A and replaced by 4 hydrogen atoms, and the two wavy lines in ring B each, together with the respective parallel bond, signify a double bond; or or the two bonds characterised by wavy lines are absent in ring B and replaced by a total of 4 hydrogen atoms, and the two wavy lines in ring A each, together with the respective parallel bond, signify a double bond; or both in ring A and in ring B all of the 4 wavy bonds are absent and are replaced by a total of 8 hydrogen atoms; or a salt thereof, if at least one salt-forming group is present.
Preferably, the FLT-3 inhibitor is N-[(9S,10/R,11R,13R)-2,3,10,11 ,12,13-hexahydro-10- methoxy-9-methyl-1 -oxo-9, 13-epoxy-1 H,9/-/-diindolo[1 ,2,3-gh:3',2', 1 '- lm]pyrrolo[3,4-y][1 ,7]benzodiazonin-11-yl]-Λ/-methylbenzamide of the formula (X):
Figure imgf000015_0001
- Additional Flt-3 inhibitor compounds include those disclosed in WO 03/099771 , e.g., diaryl urea derivatives of the formula (Xl):
Figure imgf000015_0002
wherein- .
G is either not present, lower alkylene or C3-C5-cycloalkylene; and Z is a radical of the formula (XIa)
Figure imgf000015_0003
G is not present; and
Z is a radical of the formula (XIb)
Figure imgf000016_0001
A is CH, N or N→O and A1 is N or N→O, with the proviso that not more than one of A and A' can be N→-O; n is 1 or 2; m is 0, 1 or 2; p is 0, 2 or 3; r is 0 to 5;
X is NR if p is 0, wherein R is hydrogen or an organic moiety, or if p is 2 or 3, X is nitrogen which together with (CH2)P and the bonds represented in dotted (interrupted) lines (including the atoms to which they are bound) forms a ring, or
X is CHK, wherein K is lower alkyl or hydrogen and p is zero, with the proviso that the bonds represented in dotted lines, if p is zero, are absent;
Figure imgf000016_0002
Y2 is O, S or NH, with the proviso that (Yi)n-(Y2V does not include 0-0, S-S, NH-O, NH-S or S-O groups; each of R1, R2, R3 and R5, independently of the others, is hydrogen or an inorganic or organic moiety or any two of them together form a lower alkylene-dioxy bridge bound via the oxygen atoms, and the remaining one of these moieties is hydrogen or an inorganic or organic moiety; and
R4 (if present, that is, if r is not zero) is an inorganic or organic moiety; or a tautomer thereof; or a pharmaceutically acceptable salt thereof.
Examples of compounds of formula (Xl) include:
/V-(4-pyridin-4-yl-oxy-phenyl)-/V-(4-ethyl-phenyl)-urea;
Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(3-trifluoromethyl-phenyl)-urea;
Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(4-(2,2,2-trifluoroethoxy)-3-trifluoromethyl-phenyl)-urea;
Λ/-(4-(4-(4-hydroxyphenylamino)-pyrimidin-6-yl)-oxyphenyl)-Λ/'-(3-trifluoromethylphenyl)- urea; Λ/-(4-(2-methyl-pyridin-4-yl)-oxyphenyl)-Λ/'-(3-trifluoronnethyl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(4-n-propyl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(4-πnethyl-phenyl)-urea; Λ/-methyl-Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(4-ethyl-phenyl)-urea; Λ/-methyl-Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(3-trifluoromethyl-phenyl)-urea; Λ/-methyl-Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(4-n-propyl-phenyl)-urea; N-methyl-Λ/-(4-pyridin-4-yl-oxy-phenyl)-Λ/1-(4-methyl-phenyl)-urea; A/-(4-pyridin-4-yl-oxy-phenyl)-W-(4-bromo-3-trifluoromethyl-phenyl)-urea; A/-(4-pyridin-4-yl-oxy-phenyl)-Λ/'-(3-nnethoxy-5-trifluoronnethyl-phenyl)-urea; Λ/-(4-pyridin-4-ylnnethyl-phenyl)-Λ/1-(4-n-propyl-phenyl)-urea; Λ/-(4-pyridin-4-ylmethyl-phenyl)-Λ/'-(4-ethyl-phenyl)-urea; Λ/-(4-pyridin-4-ylmethyl-phenyl)-Λ/1-(4-methyl-phenyl)-urea; /\/-(4-pyridin-4-ylnnethyl-phenyl)-W-(3-trifluoromethyl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxy-phenyl)acetyl-(4-ethyl-phenyl)-amide; Λ/-(4-pyridin-4-yl-oxy-phenyl)acetyl-(4-methyl-phenyl)-amide; Λ/-(4-pyridin-4-yl-oxy-phenyl)acetyl-(4-n-propyl-phenyl)-amide; 5-(4-pyridyl-oxy)-Λ/-(3-trifluoromethyl-phenyl)amino-carbonyl-2,3-dihydroindole; 5-(4-pyridyl-oxy)-W-(3-trifluoromethyl-phenyl)amino-carbonyl-1 ,2,3,4-tetrahydroquinoline; A/-(4-(4-chloropyrimidin-6-yl)-oxyphenyl)-Λ/1-(3-trifluoromethylphenyl)-urea; " Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/'-(4-phenyl-3-trifluoronnethyl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/'-(4-(piperidin-1-yl)-3-trifluoromethyl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/'-(4-(morpholino)-3-trifluoromethyl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/'-(3,4,5-trimethoxy-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/1-(3-methoxy-4-phenyl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/l-(3-methoxy-4,5-(ethylen-1 ,2-dioxy)-phenyl)-urea; /V-(4-pyridin-4-yl-oxyphenyl)-W-(3-methoxy-4-(2,2,2-trifluoroethoxy)-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/l-(3-methoxy-4-piperidin-1-yl-phenyl)-urea; Λ/-(4-pyridin-4-yl-oxyphenyl)-Λ/'-(4-piperidin-1-yl-phenyl)-urea; Λ/-(4-[2-(4-hydroxyphenyl)-amino-pyrimidin-4-yl]-oxyphenyl-Λ/1-(3-trifluoromethyl-phenyl)- urea;
/V-(4-[4-(4-sulfamoylphenyl)-amino-pyrimidin-6-yl]-oxyphenyl-Λ/'-(3-trifluoromethyl- phenyl)-urea;
Λ/-(4-[4-(4-carbamoylphenyl)-amino-pyrimidin-6-yl]-oxyphenyl-Λ/'-(3-trifluoromethyl- phenyl)-urea;
A/-(4-[4-(4-(A/-2-hydroxyethylcarbamoyl)-phenyl)-amino-pyrimidin-6-yl]-oxyphenyl-/V-(3- trifluoromethyl-phenyl)-urea;
A/-(4-[4-(4-hydroxyphenyl)-amino-pyrimidin-6-yl]-oxyphenyl-/V-(3-trifluoromethyl-4-(2,2,2- trifluoroethoxy)-phenyl)-urea;
Λ/-(4-(Λ/-oxido-pyridin-4-yl)-oxyphenyl)-Λ/'-(3-trifluoromthyl-phenyl)-urea;
Λ/-(4-(2-methoxypyridin-5-yl)-oxyphenyl)-Λ/1-(3-trifluoromethyl-phenyl)-urea;
/V-(4-(2-pyridon-5-yl)-oxyphenyl)-/V-(3-trifluoromethyl-phenyl)-urea;
Λ/-[4-{(2-acetylamino)-pyridin-4-yl}-oxy]-phenyl-Λ/'-(3-trifluoromethyl-phenyl)-urea;
Λ/-[4-(pyridin-4-yl-oxy)-2-chloro-phenyl]-Λ/'-(3-trifluoromethyl-phenyl)-urea;
A/-[4-(pyridin-4-yl-oxy)-2-methyl-phenyl]-yV-(3-trifluoromethyl-phenyl)-urea; and
Λ/-(4-[4-(2-aminoethoxyphenyl)-arτiino-pyrimidin-6-yl]-oxyphenyl-Λ/'-(3-trifluoromethyl- phenyl)-urea; or pharmaceutically acceptable salts thereof.
Most preferred is:
1-[4-(4-ethyl-pipera2inyl-1-ylmethyl)-3-trifluoromethyl-phenyl]-3-[4-(6-methylamino- pyrimidin-4-yloxy-phenyl]-urea;
1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-ethyl-piperazin-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea; and
1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-methyl-piperazin-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea; and pharmaceutically acceptable salts thereof. - Further Flt-3 inhibitor compounds include those disclosed in WO 04/046120, e.g., compounds of the formula (XII):
Figure imgf000019_0001
or a pharmaceutically acceptable salt thereof, wherein
R1 is hydrogen or Y-R1, wherein Y is an optionally substituted d-C6-alkylidene chain wherein up to two methylene units are optionally and independently replaced with -O-, -S-, -NR-, -OCO-, -COO- or -CO-; each occurrence of R is independently hydrogen or an optionally substituted C^Ce-aliphatic group; and each occurrence of R' is independently hydrogen or an optionally substituted group selected from a Ci-C6-aliphatic group, a 3- to 8-membered saturated, partially unsaturated or fully unsaturated monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur, or an 8- to 12-membered saturated, partially unsaturated or fully unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur, or R and R1, two occurrences of R1 or two occurrences of R', are taken together with the atom(s) to which they are bound to form an optionally substituted 3- to 12-membered saturated, partially unsaturated or fully unsaturated monocyclic or bicyclic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen or sulfur;
Figure imgf000019_0002
~ - wherein
T is an optionally substituted Ci-C4-alkylidene chain wherein one methylene unit of T is optionally replaced by -NR-, -S-, -O-, -CS-, -CO2-, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO2-, -SO2NR-, -NRSO2-, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO2NR-, -SO-, -SO2-, -PO-, -PO2- or -POR-; n is O or 1 ;
Ar1 is an optionally substituted aryl group selected from a 5- to 6-membered monocyclic or an 8- to 12-membered bicyclic ring having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur; and Cy1 is an optionally substituted group selected from a 3- to 7-membered saturated or partially unsaturated monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur, or an 8- to 12-membered saturated or partially unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur, or
R1 and R2, taken together with the nitrogen form an optionally substituted 5- to 8-membered monocyclic or 8- to 12-membered bicyclic saturated, partially unsaturated or fully unsaturated ring having 0-3 additional heteroatoms independently selected from nitrogen, oxygen or sulfur, wherein Ar1, Cy1 or any ring formed by R1 and R2 taken together, are each independently optionally substituted with x independent occurrences of Q-Rx, wherein x is 0-5;
Q is a bond or is a Ci-C6-alkylidene chain wherein up to two methylene units of Q are optionally replaced by -NR-, -S-, -O-, -CS-, -CO2-, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO2-, -SO2NR-, -NRSO2-, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO2NR-, -SO-, -SO2-, -PO-, -PO2- or -POR-; and each occurrence of Rx is independently R1, halogen, NO2, CN, OR', SR', N(R')2,
NR1COR', NR'C0NR'2, NR1CO2R', COR1, CO2R1, OCOR1, C0N(R')2, OCON(R')2, SOR', SO2R', SO2N(R')2, NR1SO2R', NR'SO2N(R')2, COCOR' or COCH2COR1;
R3 is bonded to the nitrogen atom in either the 1- or 2-position of the ring and is (L)01Ar2 or (L)mCy2, wherein
L is an optionally substituted CrC4-alkylidene chain wherein one methylene unit of L is optionally replaced by -NR-, -S-, -0-, -CS-, -CO2-, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO2-, -SO2NR-, -NRSO2-, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO2NR-, -SO-, -SO2-, -PO-, -PO2- or -POR-; m is O or 1 ;
Ar2 is an optionally substituted aryl group selected from a 5- to 6-membered monocyclic or an 8- to 12-membered bicyclic ring having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur; and Cy2 is an optionally substituted group selected from a 3- to 7-membered saturated or partially unsaturated monocyclic ring having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur, or an 8- to 12-membered saturated or partially unsaturated bicyclic ring system having 0-5 heteroatoms independently selected from nitrogen, oxygen or sulfur, wherein Ar2 and Cy2 are each independently optionally substituted with y occurrences of Z-Rγ, wherein y is 0-5;
Z is a bond or is a Ci-C6-alkylidene chain wherein up to two methylene units of Z are optionally replaced by -NR-, -S-, -O-, -CS-, -CO2-, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO2-, -SO2NR-, -NRSO2-, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO2NR-, -SO-, -SO2-, -PO-, -PO2- or -POR-; and each occurrence of Rγ is independently R', halogen, NO2, CN, OR', SR', N(R')2, NR1COR', NR'C0NR'2, NR1CO2R', COR1, CO2R', OCOR', CON(R1J2, 0C0N(R')2, SOR', SO2R1, SO2N(R')2> NR1SO2R1, NR'SO2N(R')2, COCOR' or COCH2COR1;
R4 is hydrogen or CrC6-alkyl, provided that when R5 is hydrogen, R4 is also hydrogen; R5 is hydrogen, or
R3 and R5, taken together form an optionally substituted group selected from a 5- to 7-membered saturated, partially unsaturated or fully unsaturated monocyclic ring
_ having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur, or an 8- to 10-membered saturated, partially unsaturated or fully unsaturated bicyclic ring system having 0-3 heteroatoms independently selected from nitrogen, oxygen or sulfur; and wherein any ring formed R3 and R5 taken together, is optionally substituted with up to five substituents selected from W-Rw, wherein
W is a bond or is a C-rCβ-alkylidene chain wherein up to two methylene units of W are optionally and independently replaced by -NR-, -S-, -0-, -CS-, -CO2-, -OCO-, -CO-, -COCO-, -CONR-, -NRCO-, -NRCO2-, -SO2NR-, -NRSO2-, -CONRNR-, -NRCONR-, -OCONR-, -NRNR-, -NRSO2NR-, -SO-, -SO2-, -PO-, -PO2- or -POR-; and each occurrence of Rw is independently R1, halogen, NO2, CN, OR1, SR1, N(R')2,
NR1COR1, NR'CONR's, NR1CO2R1, COR', CO2R', OCOR', CON(R')2, OCON(R1J2, SOR', SO2R', SO2N(R')2, NR1SO2R1, NR'SO2N(R')2, COCOR' or COCH2COR1, provided that when: a) R3 is unsubstituted phenyl and R1 is hydrogen, then R2 is not: i) unsubstituted phenyl; ii) unsubstituted pyridyl; iii) benzyl substituted with o-OMe; iv) -(C=S)NH(C=O)phenyl;
Figure imgf000022_0001
vi) -(C=S)NH-naphthyl or -(C=O)NH-naphthyl, or b) R3 is substituted or unsubstituted phenyl, then R2 is not phenyl substituted in the para position with oxazole, thiazole, thiadiazole, oxadiazole, tetrazole, triazole, diazole or pyrrole; c) R3 is phenyl, pyridyl, pyrimidinedione or cyclohexyl and R1 is hydrogen, then R2 is not phenyl simultaneously substituted with one occurrence of OMe in the meta position, and one occurrence of oxazole in the para position; d) R3 is 4-CI phenyl or 3,4-CI-phenyl, then R2 is not p-CI phenyl; e) R3 is unsubstituted pyrimidinyl, then R2 is not unsubstituted phenyl, p-OMe substituted phenyl, p-OEt substituted phenyl or o-OMe substituted phenyl or when R3 is 4-Me pyrimidinyl or 4,6-dimethylpyrimidinyl, then R2 is not unsubstituted phenyl; f) compounds of formula (XII) exclude:
Figure imgf000023_0001
g) R2Js 3-pyridinyl and R1 is hydrogen, then R3 is not trimethoxybenzoyl; h) R3 is optionally substituted phenyl and R1 is hydrogen, then R2 is not
-(C=S)NH(C=O)phenyl, -(C=O)NHphenyl, -(C=S)NHphenyl or -(C=O)CH2(C=O)- phenyl; i) R1 is hydrogen and R2 is unsubstituted benzyl, then R3 is not thiadiazole substituted with optionally substituted phenyl; j) R i1 : is hydrogen, R is pyridyl and R is pyridyl, then R is not substituted with one or more of CF3, Me, OMe, Br or Cl; k) R1 is hydrogen and R2 is pyridyl, then R3 is not unsubstituted pyridyl, unsubstituted quinoline, unsubstituted phenyl or unsubstituted isoquinoline;
I) R1 is hydrogen and R2 is unsubstituted quinoline, then R3 is not unsubstituted pyridyl or unsubstituted quinoline; m) R1 is hydrogen and R2 is unsubstituted isoquinoline or unsubstituted naphthyl, then R3 is not unsubstituted pyridyl; n) compounds of formula (XII) exclude those compounds having the general structure:
Figure imgf000023_0002
wherein
R1, R2 and R3 are as defined above; and M and K are O or H2, provided that K and M are different, A and B are each
-CH2-, -NH-, -Λ/-alkyl-, Λ/-aralkyl-, -NCORa, -NCONHRb or -NCSNHRb, wherein
Ra is lower alkyl or aralkyl; and
Rb is straight- or branched-chain alkyl, aralkyl or aryl which can either be unsubstituted or substituted with one or more alkyl and/or haloalkyl substituents; o) compounds of formula (XII) exclude those compounds having the general structure:
Figure imgf000024_0001
wherein
R1 and R2 are as defined above; and r and s are each independently 0, 1 , 2, 3 or 4, provided that the sum of s and r is at least 1 ; p) compounds of formula (XII) exclude any one or more of, or all of the following compounds:
Figure imgf000024_0002
Figure imgf000025_0001
where R2 is NH(CH)(Ph)C=O(Ph);
Figure imgf000025_0002
where R2 is unsubstituted phenyl or phenyl substituted with OMe, Cl or Me;
Figure imgf000025_0003
vii) where
R2 is unsubstituted phenyl or phenyl substituted with OMe, Cl, Me or OMe, or
R2 is unsubstituted benzyl;
Figure imgf000026_0001
viii) where
R2 is optionally substituted aralkyl; and
R° and Rd are, each independently, Me, hydrogen, CH2CI or Cl;
Figure imgf000026_0002
where RΘ is optionally substituted phenyl;
Figure imgf000026_0003
where R2 is phenyl optionally substituted with Me, OMe, Br or Cl; or q) when
R1 is hydrogen; and
R2 is phenyl or optionally substituted phenyl; and m is 1 , then L is not -CO-, -COCH2- or -COCH=CH-.
Especially preferred is the compound N3-[4-(4-morpholin-4-yl-cyclohexyl)-phenyl]-1-pyridin- 2-yl-1/-/-[1 ,2,4]triazole-3,5-diamine of the structure:
Figure imgf000027_0001
RAF kinase, a serine/threonine kinase that functions in the MAP kinase signaling pathway which is one of the pathways for growth factors to send their signal to proliferate from the extracellular environment to the cell nucleus.
RAF inhibitors are, e.g., compounds which inhibit wild-type C-Raf at an IC50 of from 0.05 mmol/L to more than 4.0 mmol/L and/or mutant B-Raf (V599E) at an IC50 of from 0.08 mmol/L to more than 4.0 mmol/L in the following assays:
Test for activity against the RAF kinase: Active B-Raf, C-Raf and V599E B-Raf proteins of human sequence are purified from insect cells using the baculoviral expression system. Raf inhibition is tested in 96-well microplates coated with lκB-α and blocked with Superblock. The phosphorylation of lκB-α at Serine 36 is detected using a phospho-lκB-α specific antibody (Cell Signaling #9246), an anti-mouse IgG alkaline phosphatase conjugated secondary antibody (Pierce #31320), and an alkaline phosphatase substrate, ATTOPHOS (Promega, #S101). Suitable RAF inhibitors include, e.g.,
- Compounds as disclosed in WO 00/09495, e.g., compounds of formula (XIII):
Figure imgf000028_0001
wherein r is from 0 to 2; n is from 0 to 2; m is from 0 to 4;
A, B, D and E are each independently of the others N or CH, with the proviso that not more than two of those radicals are N;
G is lower alkylene, -CH2-O-, -CH2-S-, -CH2-NH-, oxa (-O-), thia (-S-) or imino (-NH-), or is lower alkylene substituted by acyloxy or by hydroxy;
Q is lower alkyl, especially methyl; R is H or lower alkyl; X is imino, oxa or thia;
Y is lower alkyl or, especially, aryl, heteroaryl or unsubstituted or substituted cycloalkyl; and
Z is amino, mono- or di-substituted amino, halogen, alkyl, substituted alkyl, hydroxy, etherified or esterified hydroxy, nitro, cyano, carboxy, esterified carboxy, alkanoyl, carbamoyl, Λ/-mono- or Λ/,Λ/-di-substituted carbamoyl, amidino, guanidino, mercapto, sulfo, phenylthio, phenyl-lower alkylthio, alkylphenylthio, phenylsulfinyl, phenyl-lower alkylsulfinyl, alkylphenylsulfinyl, phenylsulfonyl, phenyl-lower alkanesulfonyl or alkylphenylsulfonyl, and where, if more than one radical Z is present (m >2), the substituents Z are identical or different; and wherein the bonds indicated by a wavy line are either single bonds or double bonds; or an Λ/-oxide of the mentioned compound, wherein one or more N atoms carry an oxygen atom; or a salt thereof. Especially preferred is (4-fert-butyl-phenyl)-(4-pyridin-4-ylmethyl-isoquinolin-1-yl)-amine.
- Additional RAF inhibitors include compounds disclosed in WO 05/028444, e.g., compounds of formula (XIV):
Figure imgf000029_0001
wherein r is from 0-2; n is from 0-2; m is from 0-4;
J is aryl, heteroaryl, cycloalkyl or heterocycloalkyl, wherein aryl is an aromatic radical having from 6-14 carbon atoms, such as phenyl, naphthyl, fluorenyl and phenanthrenyl; , heteroaryl is an aromatic radical having from 4-14, especially from 5-7 ring atoms, of which 1 , 2 or 3 atoms are chosen independently from N, S and O, such as furyl, pyranyl, pyridyl, 1 ,2-, 1 ,3- and 1 ,4-pyrimidinyl, pyrazinyl, triazinyl, triazolyl, oxazolyl, quinazolyl, imidazolyl, pyrrolyl, isoxazolyl isothiazolyl, indolyl, isoindolinyl, quinolyl, isoquinolyl, purinyl, cinnolinyl, naphthyridinyl, phthalazinyl, isobenzofuranyl, chromenyl, purinyl, thianthrenyl, xanthenyl, acridinyl, carbazolyl and phenazinyl; cycloalkyl is a saturated cyclic radical having from 3-8, preferably from 5-6 ring atoms, such as cyclopropyl, cyclopentyl and cyclohexyl; and heterocycloalkyl is a saturated cyclic radical having from 3-8, preferably from 5-6 ring atoms, of which 1 , 2 or 3 atoms are chosen independently from N, S and O, such as piperidyl, piperazinyl, imidazolidinyl, pyrrolidinyl and pyrazolidinyl;
Q is a substituent on 1 or 2 carbon atoms selected from the group consisting of halogen, unsubstituted or substituted lower alkyl, -OR2, -SR2, -NR2, -NRS(O)2N(R)2, -NRS(O)2R, -S(O)R2, -S(O)2R2, -OCOR2, -C(O)R2, -CO2R2, -NR-COR2, -CON(R2)2, -S(O)2N(R2)2, cyano, fr/-methylsilanyl, unsubstituted or substituted aryl, unsubstituted or substituted heteroaryl, such as substituted or unsubstituted imidazolyl, and substituted or unsubstituted pyridinyl, unsubstituted or substituted cycloalkyl, unsubstituted or substituted heterocycloalkyl, such as substituted or unsubstituted piperidinyl, substituted or unsubstituted piperazolyl, substituted or unsubstituted tetrahydropyranyl, and substituted or unsubstituted azetidinyl, -Ci-C4-alkyl-aryl, -Ci-C4-alkyl-heteroaryl, -C1-C4-alkyl-heterocyclyl, amino, mono- or di-substituted amino;
R is H or lower alkyl;
R2 is unsubstituted or substituted alkyl, unsubstituted or substituted cycloalkyl, phenyl, -CrC4-alkyl-aryl, -CrC4-alkyl-heteroaryl or -C1-C4-alkyl-heterocycloalkyl;
X is Y, -N(R)-, oxa, thio, sulfone, sulfoxide, sulfonamide, amide or ureylene, preferably -NH-;
Y is H, lower alkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted cycloalkyl or substituted or unsubstituted heterocycloalkyl; and
Z is amino, mono- or di-substituted amino, halogen, alkyl, substituted alkyl, hydroxy, etherified or esterified hydroxy, nitro, cyano, carboxy, esterified carboxy, alkanoyl, carbamoyl, Λ/-mono- or Λ/,Λ/-di-substituted carbamoyl, amidino, guanidino, mercapto, sulfo, phenylthio, phenyl-lower alkylthio, alkylphenylthio, phenylsulfinyl, phenyl-lower alkylsulfinyl, alkylphenylsulfinyl, phenylsulfonyl, phenyl-lower alkanesulfonyl or alkylphenylsulfonyl, and where, if more than one radical Z is present (m ≥2), the substituents Z are identical or different; or an Λ/-oxide of the mentioned compound, wherein one or more N atoms carry an oxygen atom; or a pharmaceutically acceptable salt thereof.
Most preferred are compounds selected from selected from: [4,7']biisoquinolinyl-1-yl-4-(terf-butyl-phenyl)-amine; (4-terf-butyl-phenyl)-(4-quinazolin-6-yl-isoquinolin-1-yl)-amine; and [4,7']biisoquinolinyl-1-yl-(2-tert-butyl-pyrimidin-5-yl)-amine. Focal Adhesion Kinase (FAK) is a key enzyme in the integrin-mediated outside-in signal cascade (D. Schlaepfer et al., Prog Biophys MoI Biol, Vol. 71 , pp. 435-478 (1999). Interaction between cells and extracellular matrix (ECM) proteins is transduced as intracellular signals important for growth, survival and migration through cell surface receptors, integrins. FAK plays an essential role in these integrin-mediated outside-in signal cascades. The trigger in the signal transduction cascade is the autophosphorylation of Y397. Phosphorylated Y397 is a SH2 docking site for Src family tyrosine kinases. The bound c-Src kinase phosphorylates other tyrosine residues in FAK. Among them, phsophorylated Y925 becomes a binding site for the SH2 site of Grb2 small adaptor protein. This direct binding of Grb2 to FAK is one of the key steps for the activation of down stream targets, such as the Ras-ERK2/MAP kinase cascade.
Compounds of the invention are active in a FAK assay system as described in the Examples, and show an inhibition IC50 in the range of 1-100 nM. Particularly active are the compounds show IC50 vales in the range of 1-5 nM.
FAK inhibition is determined as follows: All steps are performed in a 96-well black microtiter plate. Purified recombinant hexahistidine-tagged human FAK kinase domain is diluted with dilution buffer (50 mM HEPES, pH 7.5, 0.01 % BSA, 0.05% Tween-20 in water) to a concentration of 94 ng/mL (2.5 nM). The reaction mixture is prepared by mixing 10 μl_ 5 x kinase buffer (250 mM HEPES, pH 7.5, 50 μM Na3VO4, 5 mM DTT, 10 mM MgCI2, 50 mM MnCI2, 0.05% BSA, 0.25% Tween-20 in water), 20 μL water, 5 μl_ of 4 μM biotinylated peptide substrate (Biot-Y397) in aqueous solution, 5 μL of test compound in DMSO and 5 μL of recombinant enzyme solution and incubated for 30 min. at room temperature. The enzyme reaction is started by addition of 5 μL of 5 μM ATP in water and the mixture is incubated for 3 hours at 37°C. The reaction is terminated by addition of 200 μL of detection mixture (1 nM Eu-PT66, 2.5 μg/mL SA-(SL)APC, 6.25 mM EDTA in dilution buffer), and the FRET signal from europium to allophycocyanin is measured by ARVOsx+L (Perkin Elmer) after 30 min. of incubation at room temperature. The ratio of fluorescence intensity of 665 nm to 615 nm is used as a FRET signal for data analysis in order to cancel the colour quenching effect by a test compound. The results are shown as percent inhibition of enzyme activity. DMSO and 0.5 M EDTA are used as a control of 0% and 100% inhibition, respectively. IC50 values are determined by non-linear curve fit analysis using the OriginPro 6.1 program (OriginLab). The Biot-Y397 peptide (Biotin-SETDDYAEIID ammonium salt) is designed to have the same amino acid sequence as the region from S392 to D402 of human (GenBank Accession Number L13616) and is prepared by standard methods.
Purified recombinant hexahistidine-tagged human FAK kinase domain is obtained in the following way: Full-length human FAK cDNA is isolated by PCR amplification from human placenta Marathon-Ready™ cDNA (Clontech, No. 7411-1) with the 5' PCR primer (ATGGCAGCTGCTTACCTTGAC) and the 3' PCR primer TCAGTGTGGTCTCGTCTGCCC) and subcloned into a pGEM-T vector (Promega, No. A3600). After digestion with Acclll, the purified DNA fragment is treated with Klenow fragment. The cDNA fragment is digested with BamHI and cloned into pFastBacHTb plasmid (Invitrogen Japan K.K., Tokyo) previously cut with BamHI and Stu I. The resultant plasmid, hFAK KD (M384-G706)/pFastBacHTb, is sequenced to confirm its structure. The resulting DNA encodes a 364 amino acid protein containing a hexahistidine tag, a spacer region and a rTEV protease cleavage site at the ΛMerminal and the kinase domain of FAK (Met384-Gly706) from position 29 to 351.
Donor plasmid is transposed into the baculovirus genome, using MaxEfficacy DHIOBac E.coli cells. Bacmid DNA is prepared by a simple alkaline lysis protocol described in the Bac-to-Bac® Baculovirus Expression system (Invitrogen). Sf9 insect cells are transfected based on the protocol provided by the vendor (CellFECTIN®, Invitrogen). The expression of FAK in each lysate is analysed by SDS-PAGE and Western blotting with anti-human FAK monoclonal antibody (clone #77 from Transduction Laboratories).
The virus~clone that~showsihe- highest expression is further amplified~by infection to Sf9 cells. Expression in ExpresSF÷® cells (Protein Sciences Corp., Meriden, CT, USA) gives high level of protein with little degradation. Cell lysates are loaded onto a column of HiTrap™ Chelating Sepharose HP (Amersham Biosciences) charged with nickel sulfate and equilibrated with 50 mM HEPES pH 7.5, 0.5 M NaCI and 10 mM imidazole. Captured protein is eluted with increasing amounts of imidazole in HEPES buffer/NaCI, and further purified by dialysis in 50 mM HEPES pH 7.5, 10% glycerol and 1 mM DTT. - Suitable FAK inhibitors include compound of formula (XV), which are disclosed in WO 04/080980:
Figure imgf000033_0001
wherein each of R0, R1, R2 and R3 independently is hydrogen, Ci-C8-alkyl, C2-C8-alkenyl,
C2-C8-alkinyl, C3-C8-cycloalkyl, C3-C8-cycloalkyl-CrC8-alkyl, Cs-do-aryl-d-Cs-alkyl, hydroxy-CrCs-alkyl, d-Cs-alkoxy-d-Cs-alkyl, amino-CrC8-alkyl, halo-d-C8-alkyl, unsubstituted or substituted C5-C10-aryl, unsubstituted or substituted 5- or 6-membered heterocyclyl comprising 1 , 2 or 3 hetero atoms selected from N, O and S, hydroxy, Ci-C8-alkoxy, hydroxy-Ci-C8-alkoxy, Ci-C8-alkoxy-Ci-C8-alkoxy, halo-CrC8-alkoxy, unsubstituted or substituted Cs-do-aryl-d-Cs-alkoxy, unsubstituted or substituted heterocyclyloxy, or unsubstituted or substituted heterocyclyl-CrCs-alkoxy, unsubstitued or substituted amino, CrC8-alkylthio, CrCs-alkylsulfinyl, CrC8-alkylsulfonyl, C5-Ci0-arylsulfonyl, halogen, carboxy, CrC8-alkoxycarbonyl, unsubstitued or substituted carbamoyl, unsubstitued or substituted sulfamoyl, cyano or nitro, or
R0.and R1, R1 and R2 and/or R2 and R3 form, together with the carbon atoms to which they are attached, a 5- or 6-membered carbocyclic or heterocyclic ring comprising 0, 1 , 2 or 3 heteroatoms selected from N, O and S;
R i4 is hydrogen or d-C8-alkyl; each of R5 and R6 independently is hydrogen, CrC8-alkyl, d-Cs-alkoxy-d-Cβ-alkyl, halo-CrCs-alkyl, d-C8-alkoxy, halogen, carboxy, CrC8-alkoxycarbonyl, unsubstitued or substituted carbamoyl, cyano or nitro; and each of R7, R8, R9 and R10 independently is CrC8-alkyl, C2-C8-alkenyl, C2-C8-alkinyl,
C3-C8-cycloalkyl, C3-C8-cycloalkyl-CrC8-alkyl, C5-C10-aryl-CrC8-alkyl, hyd TOXy-C1 -C8- alkyl, d-Cs-alkoxy-d-Cs-alkyl, amino-CrC8-alkyl, halo-CrC8-alkyl, unsubstituted or substituted C5-C10-aryl, unsubstituted or substituted 5- or 6-membered heterocyclyl comprising 1, 2 or 3 hetero atoms selected from N, O and S, hydroxy, CrC8-alkoxy, hydroxy-CrCs-alkoxy, Ci-Cs-alkoxy-CrCs-alkoxy, halo-Ci-C8-alkoxy, unsubstituted or substituted C5-Cio-aryl-Ci-C8-alkoxy, unsubstituted or substituted heterocyclyloxy, or unsubstituted or substituted heterocyclyl-CrC8-alkoxy, unsubstituted or substituted, amino, CrCs-alkylthio, CrC8-alkylsulfinyl, CrCs-alkylsulfonyl, C5-Cio-arylsulfonyl, halogen, carboxy, CVC8-alkoxycarbonyl, unsubstituted or substituted carbamoyl, unsubstitued or substituted sulfamoyl, cyano or nitro, wherein R7, R8 and R9 independently of each other can also be hydrogen, or
R7 and R8, R8 and R9 and/or R9 and R10 form, together with the carbon atoms to which they are attached, a 5- or 6-membered carbocyclic or heterocyclic ring comprising 0, 1 , 2 or 3 heteroatoms selected from N, O and S;
A is C or N; and salts thereof.
Specific examples of formula (XV) include
2-[5-bromo-2-(2-methoxy-5-morpholin-4-yl-phenylamino)-pyrimidin-4-ylamino]-Λ/-methyl- benzenesulfonamide;
2-[5-chloro-2-(2-methoxy-4-morpholin-4-yl-phenylamino)-pyrimidin-4-ylamino]-Λ/-methyl- benzamide;
Λ/2-(4-[1,4']bipiperidinyl-1'-yl-2-methoxy-phenyl)-5-chloro-Λ/4-[2-(propane-1-sulfonyl)- phenyl]-pyrimidine-2,4-diamine; and
2-{5-chloro-2-[2-methoxy-4-(4-methyl-piperazin-1-yl)-phenylamino]-pyrimidin-4-ylamino}- Λ/-isopropyl-benzenesulfonarnidef or pharmaceutically acceptable salts thereof.
Additional FAK inhibitors are disclosed in WO 04/056786 to Pfizer; WQ 03/024967 to Aventis; WO 01/064655 and WO 00/053595 to AstraZeneca; and WO 01/014402.
The Janus kinases, JAK1 , JAK2, JAK3 and TYK2, are cytoplasmic protein tyrosine kinases which associate with multiple transmembrane receptors for chemokines (e.g., CCR2, CCR5, CCR7, CXCR4), interferons and cytokines (e.g., GM-CSF, erythropoietin, prolactin and interleukins (IL-2, IL-3, IL-4, IL-5, IL-6.IL-12 IL-13, etc.). Ligand binding to these receptors leads to activation of the associated JAK members, an essential event in the intracellular transmission of the receptor's signal. JAK activations results in phosphorylation of multiple downstream targets including the transcription factor family Signal Tranducer and Activator of Transcription (STAT). JAK activation regulates multiple processes, particularly within the haematopoietic compartment. Targeted disruption of JAK2 results in a embryonic lethal failure to produce mature erythrocytes, underlining the importance of JAK2 in mediating signaling from the erythropoietin growth factor receptor. Additional roles for JAK2 in prolactin signaling in the breast have also been delineated. JAK family members are also of importance in regulating inflammatory and immune responses, by controlling the development and homeostasis of lymphocytes and other immunomodulating cells. JAK3, an enzyme primarily expressed in T and B cells, plays a particularly critical role in the development of T cell and their ability to mount an immune response. Disruption of JAK3 signaling is associated with Severe Combined Immunodeficiency Syndromes (SCID) in both mice and humans.
JAK3 kinase inhibitors are, e.g., compounds having an IC50 value <5 μM, preferably <1 μM, more preferably <0.1 μM in the following assays:
lnterleukin-2 (IL-2) dependent proliferation assays with CTUL and HT-2 cells: The IL-2 dependent mouse T cell lines CTL/L and HT-2 are cultured in RPMI 1640 (Gibco 52400-025) supplemented with 10% Fetal Clone I (HyClone), 50 μM 2-mercaptoethanol (31350-010), 50 μg/mL gentamycine (Gibco 15750-037), 1 mM sodium pyruvate (Gibco 11360-039), non¬ essential amino acids (Gibco 11140-035; 100x) and 250 U/mL mouse IL-2 (supernatant of X63-Ag8 transfected cells containing 50'0OO U/mL mouse IL-2 according to Genzyme standard). Cultures are split twice a week 1 :40.
Before use the cells are washed twice with culture medium without mouse IL-2. The proliferation assay is performed with 4000 CTL/L cells/well or 2500 HT-2 cells/well in flat- bottom 96-well tissue culture plates containing appropriate dilutions of test compounds in culture medium with 50 U/mL mouse IL-2. CTL/L cultures are incubated at 370C for 24 hours and HT-2 cultures are incubated for 48 hours. After addition of 1 μCi 3H-thymidine and a further overnight incubation cells are harvested onto fibre filters and radioactivity is counted. lnterleukin-2 dependent proliferation of human peripheral blood mononuclear cells: Human peripheral blood mononuclear cells are isolated on Ficoll from buffy coats with unknown HLA type (Blutspendezentrum, Kantonsspital, Basel, Switzerland). Cells are kept at 2 x 107 cells/mL (90% FCS, 10% DMSO) in cryotubes (Nunc) in liquid nitrogen until use.
The cells are incubated for four days at 370C in a humidified CO2 (7%) incubator in costar flasks at the concentration of 7 x 105 cells/mL in culture medium containing RPMI 1640 (Gibco, Pacely, England) supplemented with Na-pyruvate (1 mM; Gibco), MEM non-essential amino acids and vitamins (Gibco), 2-mercaptoethanol (50 μM), L-glutamine (2 mM), gentamicin and penicillin/streptomycin (100 μg/mL; Gibco), bacto asparagine (20 μg/mL; Difco), human insulin (5 μg/mL; Sigma), human transferrin (40 μg/mL; Sigma), selected fetal calf serum (10%, Hyclone Laboratories, Logan, UT) and 100 μg/mL phytohemagglutinine. Cells are washed twice in RPMI 1640 medium containing 10% FCS and incubated for 2 hours. After centrifugation, the cells are taken up in the culture medium mentioned above (without phytohemagglutinine) containing interleukin-2 (Chiron 200 U/mL), distributed in triplicates into flat-bottomed 96-well tissue culture plates (Costar #3596) at a concentration of 5 x 104 cells/0.2 mL in the presence of appropriate concentrations of test compounds and incubated at 370C for 72 hours. 3/-/-thymidine (1 μCi/0.2 mL) was added for the last 16 hours of culture. Subsequently, cells are harvested and counted on a scintillation counter.
Suitable JAK kinase inhibitors include, e.g.,
- Compounds-as-disclosed in U.S. Patent No. 2003/0073719A1 , e.g., a compound of formula (XVI)
Figure imgf000036_0001
wherein each of R2 and R3, independently, is selected from the group consisting of H, amino, halogen, OH, nitro, carboxy, C2-C6-alkenyl, C2-C6-alkynyl, CF3, trifluoromethoxy, Ci-C6-alkyl, d-C6-alkoxy, C3-C6-cycloalkyl, wherein the alky], alkoxy or cycloalkyl groups are optionally substituted by one to three groups selected from halogen, OH, carboxy, amino, CrC6-alkylthio, CrC6-alkylamino,
Figure imgf000037_0001
C5-C9-heteroaryl, C2-C9-rieterocycloalkyl, C3-C9-cycloalkyl or C6-C10-aryl, or each of R2 and R3, independently, is C3-Ci0-cycloalkyl, Cs-do-cycloalkoxy, Ci-C6-alkylamino, (d-C6-alkyl)2amino, C6-C10-arylamino, CrC6-alkylthio, C6-Ci0-arylthio, C-ι-C6-alkylsulfinyl, C6-Ci0-arylsulfinyl, CrC6-alkylsulfonyl, C6-C10-arylsulfonyl, CrC6-acyl, d-Ce-alkoxy-CO-NH-, d-Ce-alkylamino-CO-, C5-C9-heteroaryl, C2-C9-heterocycloalkyl or C6-C10-aryl, wherein the heteroaryl, heterocycloalkyl and aryl groups are optionally substituted by one to three halogens, d-Cβ-alkyl, Ci-Ce-alkyl-CO-NH-, d-Cβ-alkoxy-CO-NH-, d-Cβ-alkyl-CO-NH-d-Ce- alkyl, d-Ce-alkoxy-CO-NH-d-Ce-alkyl, d-Ce-alkoxy-CO-NH-d-Ce-alkoxy, carboxy, carboxy-Ci-C6-alkyl, carboxy-d-Cβ-alkoxy, benzyloxycarbonyl-CrCβ-alkoxy, d-Ce-alkoxycarbonyl-CrCβ-alkoxy, C6-Ci0-aryl, amino, amino-d-C6-alkyl, C2-C7-alkoxycarbonylamino, C6-C10-aryl-C2-C7-alkoxycarbonylamino, CrCe-alkylamino, (CrC6-alkyl)2amino, d-Ce-alkylamino-d-Ce-alkyl, (C1-C6-alkyl)2amino-C1-C6-alkyl, hydroxy, CrC6-alkoxy, carboxy, carboxy-d-C6-alkyl, C2-C7-alkoxycarbonyl, C2-C7-alkoxycarbonyl-CrC6-alkyl, CrCβ-alkoxy-CO-NH-, Ci-Ce-alkyl-CO-NH-, cyano, C5-C9-hetero-cycloalkyl, amino-CO-NH-, CrCe-alkylamino-CO-NH-, (CrCe-alkyO^mino-CO-NH-, Ce-do-arylamino-CO-NH-, Cs-Cg-heteroarylamino-CO-NH-, CrCe-alkylamino-CO-NH-CrCβ-alkyl, (CrCe-alkyO^mino-CO-NH-CrCe-alkyl, C6-C10-arylamino-CO-NH-Ci-C6-alkyl, Cs-Cg-heteroarylamino-CO-NH-d-Ce-alkyl, CrC6-alkylsulfonyl, CrC6-alkylsulfonylamino, CrCe-alkylsulfonylamino-CrCβ-alkyl, Ce-C-io-arylsulfonyl, C6-C10-arylsulfonylamino, Ce-Cio-arylsulfonylamino-Ci-Ce-alkyl, CrCe-alkylsulfonylamino, d-Ce-alkylsulfonylamino- d-Cβ-alkyl, C5-C9-heteroaryl or CrCg-heterocycloalkyl. Examples of compound of (XVI) include, e.g., methyl-[(3f?,4R)-4-methyl-1-(propane-1-sulfonyl)-piperidin-3-yl]-(7/-/-pyrrolo[2,3- c(]pyrimidin-4-yl)-amine;
(3R,4R)-)-4-methyl-3-[methyl-(7H-pyrrolo[2-,3-d]pyrinnidin-4-yl)-amino]-piperidine-1- carboxylic acid methyl ester;
3,3,3-trifluoro-1-{(3R,4R)-4-methyl-3-[methyl-(7H-pyrrolo[2,3-c(|pyrimidin-4-yl)-amino]- piperidin-1 -yl}-propan-1 -one;
(3f?,4f?)-4-methyl-3-[methyl-(7/-/-pyrrolo[2,3-c/]pyrimidin-4-yl)-amino]-piperidine-1- carboxylic acid dimethylamide;
{(3R,4R)-4-methyl-3-[methyl-(7/-/-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]-piperidine-1- carbonyl}-amino)-acetic acid ethyl ester;
3-{(3f?,4R)-4-methyl-3-[methyl-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3- oxo-propionitrile;
3,3,3-trifluoro-1-{(3R,4R)-4-methyl-3-[methyl-(5-methyl-7/-/-pyrrolo[2,3-d]pyrimidin-4-yl)- amino]-piperidin-1 -yl}-propan-1 -one;
1-{(3R,4R)-4-methyl-3-[methyl-(7/-/-pyrrolo[2,3-cdpyrimidin-4-yl)-amino]piperidin-1-yl}-but- 3-yn-1-one;
^{(SR^RJ-S-tCδ-chloro^H-pyrrolop.S-cdpyrimidin^-yO-methyl-aminol^-methyl- piperidin-1 -yl}-propan-1 -one;
1-{(3f?,4/:?)-3-[(5-fluoro-7/-/-pyrrolo[2,3-c(]pyrimidin-4-yl)-methyl-amino]-4-methyl-piperidin- 1-yl}-propan-1-one;
(3R,4R)-W-cyano-4-methyl-3-[methyl-(7H-pyrrolo[2,3-c/lpyrimidin-4-yl)-amino]-Λ/'-propyl- piperidine-1-carboxamidine; or
(3R,4R)-Λ/-cyano-4,Λ/',Λ/'-trimethyl-3-[methyl-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]- piperidine-1 -carboxamidine. - Additional JAK inhibitors include compounds as disclosed in WO 02/092571 , e.g., a compound of formula (XVII)
Figure imgf000039_0001
wherein
X is NR3 or O; n is 0 or 1 ;
Ar1 is selected from phenyl, tetrahydronaphthenyl, indolyl, pyrazolyl, dihydroindenyl,
1 -oxo-2, 3-dihydroindenyl or indazolyl, each of which can be optionally substituted by one or more groups selected from halogen, hydroxy, cyano, CrC8-alkoxy, CO2R8, CONR9R10, d-Cβ-alkyl-O-CrCβ-alkyl, C1-Cβ-alkyl-NR8-C1-Cβ-alkyl, CrC8-alkyl- CONR8-CrC8-alkyl, CrC8-alkyl-CONR9R10, NR8CO-d-Cβ-alkyl, CrC8-thioalkyl, CrCs-alkyl (itself optionally substituted by one or more OH or cyano or fluorine) or d-Cs-alkoxy;
R groups are independently is hydrogen or CrC8-alkyl;
R1 and R2, independently, is selected from H, halogen, nitro, cyano, C-ι-C8-alkyl, d-Cβ-alkoxy, OH, aryl, Y(CR11 2)PNR4R5, Y(CR11 2)pCONR4R5Y(CR11 2)pCO2R6,
Y(CR11 2)POR6 or Y(CR11 2)pR6, or
R1 and R2 are linked together as -OCHO- or -OCH2CH2O-; each R11, independently, is H, CrC8-alkyl, hydroxy or halogen; p is O, 1 , 2, 3, 4 or 5;
R3 is H or d-Ce-alkyl;
Y is oxygen, CH2 or NR7R3 is hydrogen or d-C8-alkyl; each of R4 and R5, independently, is H, d-Cβ-alkyl, or
R4 and R5, together with the nitrogen atom to which they are attached, form a 4-to
7-membered saturated or aromatic heterocyclic ring system optionally containing a further O, S or NR6, or one of R4 and R5 is H or CrC8-alkyl and the other is a 5- or 6-membered heterocyclic ring system optionally containing a further O, S or N atom; R6 is H, CrCβ-alkyl, phenyl or benzyl;
R7 is H or d-Cs-alkyl;
R8 is H or Ci-Ce-alkyl; each of R9 and R10, independently, is hydrogen or CτC8-alkyl; and pharmaceutically acceptable salts thereof.
- Examples of additional JAK inhibitors include compounds as disclosed in U.S. Patent No. 2002/0055514 A1 , e.g., a compound of formula (XVIII)
(XVIII)
Figure imgf000040_0001
wherein
X is NH, NR11, S, O CH2 or R11CH, wherein R11 is H, Ci-C4-alkyl or C1-C4-alkanoyl; each of R1-R8, independently, is H, halogen, OH, mercapto, amino, nitro, CτC4-alkyl, C1- C4-alkoxy or CrC4-alkylthio, wherein 2 of R1-R5, together with the phenyl ring to which they are attached, may optionally form a fused ring, e.g., forming a naphthyl or a tetrahydronaphthyl ring; and further wherein the ring formed by the two adjacent groups of RrR5 may optionally be substituted by 1, 2, 3 or 4 halogen, hydroxy, mercapto, amino, nitro, CrC^alkyl, C-ι-C4-alkoxy or CrC4-alkylthio, and provided that at least one of R2-R5 is OH; and each of R9 and R10, independently, is H, halogen, Ci-C4-alkyl, C1-C4^IkOXy or CrC4-alkanoyl, or
R9 and R10, together, are methylenedioxy; or a pharmaceutically acceptable salt thereof, and provided that at least one of R2-R5 is OH. - Additional JAK inhibitors include compounds as disclosed in WO 04/052359, e.g., a compound of formula (XIX)
Figure imgf000041_0001
wherein n is 1 , 2, 3, 4 or 5;
R1 is H, CH3 or CH2N(CH3)2; and
R3 is CH2N(CHs)2.
The compounds of formulae (XVI)-(XIX) may exist in free or salt form. Examples of pharmaceutically acceptable salts of the compounds of the formulae (XVI)-(XIX) include salts with inorganic acids, such as hydrochloride; salts with organic acids, such as acetate or citric acid, or, when appropriate, salts with metals, such as sodium or potassium; salts with amines, such as triethylamine; and salts with dibasic amino acids, such as lysine.
- Additional JAK inhibitors include compounds as disclosed in WO 03/048162, e.g., amorphous and crystallline forms of 3-{(3f?,4R)-4-methyl-3-[methyl-(7H-pyrrolo[2,3- cf]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3-oxo-propionitrile mono citrate salt.
---Additional-JAKJnhibitors include compounds as disclosed in WO 01/42246 and WO 02/096909, e.g., a compound of formula (XX)
Figure imgf000041_0002
or the pharmaceutically acceptable salt thereof, wherein
R1 is a group of the formula (XXI)
Figure imgf000042_0001
wherein y is O, 1 or 2;
R4 is selected from the group consisting of hydrogen, d-C6-alkyl, Ci-C6-alkylsulfonyl, C2-C6-alkenyl, C2-C6-alkynyl, wherein the alkyl, alkenyl and alkynyl groups are optionally substituted by deuterium, hydroxy, amino, trifluoromethyl, Ci-C4-alkoxy, CrC6-acyloxy, C-i-Ce-alkylamino, (Ci-C6-alkyl)2amino, cyano, nitro, C2-C6-alkenyl, C2-C6-alkynyl or CrCe-acylamino, or
R4 is C3-C10-cycloalkyl, wherein the cycloalkyl group is optionally substituted by deuterium, hydroxy, amino, trifluoromethyl, Ci-C6-acyloxy, CrC6-acylamino, Ci-C6-alkylamino, (d-Ce-alkyl^amino, cyano, cyano-Ci-C6-alkyl, trifluoromethyl-CrCe-alkyl, nitro, nitro-CrC6-alkyl or CrC6-acylamino;
R5 is C2-C9-heterocycloalkyl, wherein the heterocycloalkyl groups must be substituted by one to five carboxy, cyano, amino, deuterium, hydroxy, CrC6-alkyl, C-ι-C6-alkoxy, halo, CrC6-acyl, CrCβ-alkylamino, amino-d-Ce-alkyl, d-Ce-alkoxy-CO-NH, CrCe-alkylamino-CO-, C2-C6-alkenyl, C2-C6-alkynyl, Ci-C6-alkylamino, amino-Ci-C6-alkyl, hydroxy-Ci-C6-alkyl, CrC6-SIkOXy-C1-C6- alkyl, CrCβ-acyloxy-CrCe-alkyl, nitro, cyano-CrC6-alkyl, halo-CrC6-alkyl, nitro- CrC6-alkyl, trifluoromethyl, trifluoromethyl-CrCe-alkyl, CrC6-acylamino, CrCe-acylamino-Ci-C6-alkyl, C-|-C6-alkoxy-Ci-C6-acylamino, amino-Ci-C6-acyl, amino-CrC6-acyl-CrC6-alkyl, C-i-Cβ-alkylamino-CrCe-acyl, (Ci-C6-alkyl)2amino- CrC6-acyl, R15R16N-CO-O-, R15R16N-CO-CrC6-alkyl-, CrC6-alkyl-S(O)m, R15R16NS(O)n,, R15R16NS(O)m-CrC6-alkyl, R15S(O)m R16N, R15S(O)111R16N-C1-C6- alkyl, wherein m is O, 1 or 2; and
R15 and R16 are each independently selected from hydrogen or CrC6-alkyl, or a group of the formula (XXII)
Figure imgf000043_0001
wherein a is 0, 1 , 2, 3 or 4; b, c, e, f and g are each independently 0 or 1 ; d is 0, 1 , 2 or 3;
X is S(O)n, wherein n is 0, 1 or 2, oxygen, carbonyl or -C(=Λ/-cyano)-;
Y is S(O)n, wherein n is 0, 1 or 2 or carbonyl;
Z is carbonyl, C(O)O-, C(O)NR- or S(O)n, wherein n is 0, 1 or 2;
R6, R7, R8, R9, R10 and R11 are each independently selected from the group consisting of hydrogen or CrC6-alkyl optionally substituted by deuterium, hydroxy, amino, trifluoromethyl, Ci-C6-acyloxy, Ci-C6-acylamino, CrC6-alkylamino, (Ci-C6-alkyl)2amino, cyano, cyano-CrC6-alkyl, trifluoromethyl-CrCβ-alkyl-, nitro, nitro-CrC6-alkyl or CrC6-acylamino;
R12 is carboxy, cyano, amino, oxo, deuterium, hydroxy, trifluoromethyl, Ci-C6-alkyl, trifluoromethyl-Ci-C6-alkyl, C-ι-C6-alkoxy, halo, Ci-Ce-acyl, CrCe-alkylamino, (CrC6-alkyl)2amino, amino-CrC6-alkyl, d-Ce-alkoxy-CO- NH, CrCβ-alkylamino-CO-, C2-C6-alkenyl, C2-C6-alkynyl, Ci-C6-alkylamino, hydroxy-CrCe-alkyl, d-Ce-alkoxy-Ci-Ce-alkyl, C-ι-C6-acyloxy-d-C6-alkyl, -nitroreyano-GT-Ge-alk-ylrhalo-GrCe-alkylT-nitro-G-rGe-alkylT trifluoromethyl, trifluoromethyl-C-i-Ce-alkyl, Ci-C6-acylamino, Ci-C6-acylamino-d-C6-alkyl, d-Cβ-alkoxy-d-Ce-acylamino, amino-CrC6-acyl, amino-Ci-C6-acyl-CrC6- alkyl, Ci-Ce-alkylamino-CrCe-acyl, (CrCe-alkyl^amino-CrCe-acyl, R15R16N- , R >1^5DR1 15,-
CO-O- ^6»N-CO-d-Ce-alkyl-, R ^1150C(O)NH, R1OC(O)NH, R i1150 KNHC(O)NH,
Figure imgf000043_0002
R15R1βNS(O)m-CrCβ-alkyl, R15S(O)mR16N, R15S(O)mR16N-CrC6-alkyl, wherein m is O, 1 or 2; and
R15 and R16 are each independently selected from hydrogen or CrC6-alkyl; R2 and R3 are each independently selected from the group consisting of hydrogen, deuterium, amino, halo, hydoxy, nitro, carboxy, C2-C6-alkenyl, C2-C6-alkynyl, trifluoromethyl, trifluoromethoxy, d-Ce-alkyl, CrC6-alkoxy, C3-C10-cycloalkyl, wherein the alkyl, alkoxy or cycloalkyl groups are optionally substituted by one to three groups selected from halo, hydroxy, carboxy, amino-d-Cβ-alkylthio, Ci-C6-alkylamino, (C1-C6-alkyl)2amino, C5-C9-heteroaryl, C2-C9-heterocycloalkyl, C3-C9-cycloalkyl or C6-Ci0-aryl, or
R2 and R3 are each independently C3-C10-cycloalkyl, C3-Ci0-cycloalkoxy, CrCe-alkylamino, (CrC6-alkyl)2amino, C6-Ci0-arylamino, CrC6-alkylthio, C6-Ci0-arylthio, d-Cβ-alkylsulfinyl, C6-Ci0-arylsulfinyl, d-C6-alkylsulfonyl, C6-C10-arylsulfonyl, C1-C6-SCyI1 CrCe-alkoxy-CO-NH-, d-Ce-alkyamino-CO-, C5-C9-heteroaryl, C2-C9-heterocycloalkyl or C6-C10-aryl, wherein the heteroaryl, heterocycloalkyl and aryl groups are optionally substituted by one to three halo, d-Cβ-alkyl, d-Cβ-alkyl-CO-NH-, d-Ce-alkoxy-CO-NH-, CrC6-alkyl-CO-NH- d-Cβ-alkyl. d-Cβ-alkoxy-CO-NH-d-Cβ-alkyl, d-Ce-alkoxy-CO-NH-d-Ce-alkoxy, carboxy, carboxy-d-C6-alkyl, carboxy-d-Cβ-alkoxy, benzyloxycarbonyl- CrC6-alkoxy, d-Ce-alkoxycarbonyl-d-Cβ-alkoxy, Cβ-Cio-aryl, amino, amino- Ci-C6-alkyl, d-C6-allkoxycarbonylamino, Cβ-do-aryl-d-Ce-alkoxycarbonylamino, Ci-C6-alkylamino, (CrC6-alkyl)2amino, d-Ce-alkylamino-Ci-Ce-alkyl, (C1-C6-alkyl)2amino-C1-C6-alkyl, hydroxy, Ci-C6-alkoxy, carboxy, carboxy-d-C6-alkyl, CrCe-alkoxycarbonyl, CrCe-alkoxycarbonyl-C-i-Ce-alkyl, CrCe-alkoxy-CO-NH-, d-Ce-alkyl-CO-NH-, cyano, C5-C9-heterocycloalkyl, amino-CO-NH-, CrCβ-alkylamino-CO-NH-, (Ci-Ce-alkyOaamino-CO-NH-, Ce-C^-arylamino-CO-NH-, Cδ-Cg-heteroarylamino-CO-NH-, d-Ce-alkylamino-CO-NH-CrCe-alkyl, (CrC^alkyl^amino-CO-NH-d-Ce-alkyl, C6-C10-arylamino-CO-NH-CrC6-alkyl, Cs-Ce-heteroarylamino-CO-NH-CrCe-alkyl, d-C6-alkylsulfonyl, CrC6-alkylsulfonylamino, CrCe-alkylsulfonylamino-Ci-Ce-alkyl, C6-C10-arylsulfonyl, C6-C10-arylsulfonylamino, Ce-do-arylsulfonylamino-d-Ce-alkyl, CrC6-alkylsulfonylamino, CrCe-alkylsulfonylamino-CrCe-alkyl, C5-C9-heteroaryl or Ca-Cg-heterocycloalkyl. - Additional JAK inhibitors include compounds as disclosed in WO 02/060492, to Cytopic, e.g., a compound of formula (XXIII)
(XXIlI)
Figure imgf000045_0001
or pharmaceutically acceptable salts, hydrates, solvates, crystal forms or diastereomers thereof, wherein
X is either carbon or nitrogen;
R1 is CrC-io-allyl, C2-Ci0-alkenyl, C2-C10-alkynyl, C2-C10-allylaryl, aryl or heterocyclyl, or
R1 with N may form a substituted or unsubstituted heterocyclyl, wherein the allyl, alkenyl, alkynyl, allylaryl, aryl, and heterocyclyl, is optionally substituted with one to three members selected from the group consisting of halo, amino, hydroxy, hydroxyalkyl, alkylamide, arylamide, hydroxyallylamide, nitrilo, aminoalkylamide, nitriloaryl, alkoxy (in particular, methoxy), heterocyclic alkyl in which heterocycle is a 5- to 7-membered ring and in which the hetero atom is O, N or S;
R2 is selected from Ci-C,o-allyl, C2-Ci o-alkenyl, C2-Ci0-alkynyl, C2-C10-allylaryl, aryl, halo, OH, or 6- to 7-membered heterocyclyl, wherein the alkyl, alkenyl, alkynyl, allylaryl, aryl and heterocyclyl, is optionally substituted with one to three members selected from the group consisting of halo, amino, hydroxy, hydroxyalkyl, alkylamide, arylamide, hydroxyalkylamide, nitrilo, aminoalkylamide, nitriloaryl, alkoxy (in particular, methoxy), heterocyclic alkyl, in which heterocycle is a 5- to 7-membered ring and in which the hetero atom is O, N or S.
- Additional JAK inhibitors include compounds also disclosed in WO 02/060492, to cytopic, e.g., a compound of formula (XXIV)
(XXIV)
Figure imgf000045_0002
or pharmaceutically acceptable salts, hydrates, solvates, crystal forms or diastereomers thereof, wherein
R6 is C-i-Cio-allyl, C2-C10-alkenyl, C2-Ci0-alkynyl, C2-C10-allylaryl, aryl or heterocyclyl; and
R7 is Ci-Cio-allyl, C2-Ci0-alkenyl, C2-Ci0-alkynyl, C2-C10-allylaryl, aryl, halo, OH or heterocyclyl, wherein the alkyl, alkenyl, alkynyl, alkylaryl, aryl and heterocyclyl, is optionally substituted with one to three members selected from the group consisting of halo, amino, hydroxy, hydroxyalkyl, alkylamide, arylamide, hydroxyalkylamide, nitrilo, aminoalkylamide, nitriloaryl, alkoxy (in particular, methoxy), heterocyclic alkyl in which heterocycle is a 5- to 7-membered ring and in which the hetero atom is O, N or S.
Preferred JAK kinase inhibitors include, e.g.,
Λ/-benzyl-3,4-dihydroxy-benzylidene-cyanoacetamide α-cyano-(3,4-dihydroxy)-]Λ/- benzylcinnamamide (Tyrphostin AG 490); prodigiosin 25-C (PNU156804); [4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P131); [4-(3'-bromo-4'-hydroxylphenyl)-amino-6,7-dirnethoxyquinazoline] (WHI-P154); [4-(3\5'-dibromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] WHI-P97; and
3-{(3R,4R)-4-methyl-3-[methyl-(7/-/-pyrrolo[2,3-cf]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3- oxo-propionitrile, in free form or in salt form, e.g., mono-citrate (also called CP-690,550).
In each case where citations of patent applications are given above, the subject matter relating to the compounds is hereby incorporated into the present application by reference. Comprised are likewise the pharmaceutically acceptable salts thereof, the corresponding racemates, diastereoisomers, enantiomers, tautomers, as well as the corresponding crystal modifications of above disclosed compounds where present, e.g., solvates, hydrates and polymorphs, which are disclosed therein. The compounds used as active ingredients in the combinations of the invention can be prepared and administered as described in the cited documents, respectively. Also within the scope of this invention is the combination of more than two separate active ingredients as set forth above, i.e., a pharmaceutical combination within the scope of this invention could include three active ingredients or more. In accordance with the particular findings of the present invention, there is provided:
1. A pharmaceutical combination comprising: a) at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors; and b) at least one JAK kinase inhibitor.
2. A method for treating or preventing proliferative disease in a subject in need thereof, comprising co-administration to said subject, e.g., concomitantly or in sequence, of a therapeutically effective amount of at least one agent selected from Bcr-Abl, Flt-3, RAF and FAK kinase inhibitors and at least one JAK3 kinase inhibitor, e.g., as disclosed above.
Examples of proliferative diseases include e.g. tumors, psoriasis, restenosis, sclerodermitis and fibrosis.
3. A pharmaceutical combination as defined under 1) above, e.g., for use in a method as defined under 2) above.
4. A pharmaceutical combination as defined under 1) above for use in the preparation of a medicament for use in a method as defined under 2) above.
Utility of the combination of the invention in a method as hereinabove specified, may be demonstrated in animal test methods as well as in clinic, for example in accordance with the methods hereinafter described.
A. Combined Treatment
Suitable clinical studies are, e.g., open label, dose escalation studies in patients with proliferative diseases. Such studies prove in particular the synergism of the active ingredients of the combination of the invention. The beneficial effects on psoriasis or multiple sclerosis can be determined directly through the results of these studies which are known as such to a person skilled in the art. Such studies are, in particular, suitable to compare the effects of a monotherapy using the active ingredients and a combination of the invention. Preferably, the dose of agent (a) is escalated until the Maximum Tolerated Dosage is reached, and agent (b) is administered with a fixed dose. Alternatively, the agent (a) is administered in a fixed dose and the dose of agent (b) is escalated. Each patient receives doses of the agent (a) either daily or intermittent. The efficacy of the treatment can be determined in such studies, e.g., after 12, 18 or 24 weeks by evaluation of symptom scores every 6 weeks.
The administration of a pharmaceutical combination of the invention results not only in a beneficial effect, e.g., a synergistic therapeutic effect, e.g., with regard to alleviating, delaying progression of or inhibiting the symptoms, but also in further surprising beneficial effects, e.g., fewer side-effects, an improved quality of life or a decreased morbidity, compared with a monotherapy applying only one of the pharmaceutically active ingredients used in the combination of the invention.
A further benefit is that lower doses of the active ingredients of the combination of the invention can be used, e.g., that the dosages need not only often be smaller but are also applied less frequently, which may diminish the incidence or severity of side effects. This is in accordance with the desires and requirements of the patients to be treated.
The terms "co-administration" or "combined administration" or the like as utilized, herein, are meant to encompass administration of the selected therapeutic agents to a single patient, and are intended to include treatment regimens in which the agents are not necessarily administered by the same route of administration or at the same time.
It is one objective of this invention to provide a pharmaceutical composition comprising a quantity, which is jointly therapeutically effective at targeting or preventing proliferative diseases a combination of the invention. In this composition, agent (a) and agent (b) may be administered together, one after the other or separately in one combined unit dosage form or in two separate unit dosage forms. The unit dosage form may also be a fixed combination.
The pharmaceutical compositions for separate administration of agent (a) and agent (b) or for the administration in a fixed combination, i.e., a single galenical composition comprising at least two combination partners (a) and (b), according to the invention may be prepared in a manner known per se and are those suitable for enteral, such as oral or rectal; and parenteral administration to mammals (warm-blooded animals) including humans, comprising a therapeutically effective amount of at least one pharmacologically active combination partner alone, e.g., as indicated above, or in combination with one or more pharmaceutically acceptable carriers or diluents, especially suitable for enteral or parenteral application.
Suitable pharmaceutical compositions contain, e.g., from about 0.1% to about 99.9%, preferably from about 1% to about 60%, of the active ingredient(s). Pharmaceutical preparations for the combination therapy for enteral or parenteral administration are, e.g., those in unit dosage forms, such as sugar-coated tablets, tablets, capsules or suppositories, or ampoules. If not indicated otherwise, these are prepared in a manner known perse, e.g., by means of conventional mixing, granulating, sugar-coating, dissolving or lyophilizing processes. It will be appreciated that the unit content of a combination partner contained in an individual dose of each dosage form need not in itself constitute an effective amount since the necessary effective amount can be reached by administration of a plurality of dosage units.
In particular, a therapeutically effective amount of each of the combination partner of the combination of the invention may be administered simultaneously or sequentially and in any order, and the components may be administered separately or as a fixed combination. For example, the method of preventing or treating proliferative diseases according to the invention may comprise: (i) administration of the first agent (a) in free or pharmaceutically acceptable salt form; and (ii) administration of an agent (b) in free or pharmaceutically acceptable salt form, simultaneously or sequentially in any order, in jointly therapeutically effective amounts, preferably in synergistically effective amounts, e.g., in daily or intermittently dosages corresponding to the amounts described herein. The individual combination partners of the combination of the invention may be administered separately at different times during the course of therapy or concurrently in divided or single combination forms. Furthermore, the term administering also encompasses the use of a pro-drug of a combination partner that convert in vivo to the combination partner as such. The instant invention is therefore to be understood as embracing all such regimens of simultaneous or alternating treatment and the term "administering" is to be interpreted accordingly.
The effective dosage of each of the combination partners employed in the combination of the invention may vary depending on the particular compound or pharmaceutical composition employed, the mode of administration, the condition being treated, the severity of the condition being treated. Thus, the dosage regimen of the combination of the invention is selected in accordance with a variety of factors including the route of administration and the renal and hepatic function of the patient. A clinician or physician of ordinary skill can readily determine and prescribe the effective amount of the single active ingredients required to alleviate, counter or arrest the progress of the condition. Optimal precision in achieving concentration of the active ingredients within the range that yields efficacy without toxicity requires a regimen based on the kinetics of the active ingredients' availability to target sites.
Daily dosages for agent (a) or (b) or will, of course, vary depending on a variety of factors, for example the compound chosen, the particular condition to be treated and the desired effect. In general, however, satisfactory results are achieved on administration of agent (a) at daily dosage rates of the order of ca. 0.03-5 mg/kg per day, particularly 0.1-5 mg/kg per day, e.g., 0.1-2.5 mg/kg per day, as a single dose or in divided doses. Agents (a) and (b) may be administered by any conventional route, in particular enterally, e.g., orally, e.g., in the form of tablets, capsules, drink solutions or parenterally, e.g., in the form of injectable solutions or suspensions. Suitable unit dosage forms for oral administration comprise from ca. 0.02-50 mg active ingredient, usually 0.1-30 mg, e.g., agent (a) or (b), together with one or more pharmaceutically acceptable diluents or carriers therefore.
Agent (b) may be administered to a human in a daily dosage range of 0.5-1000 mg. Suitable unit dosage forms for oral administration comprise from ca. 0.1-500 mg active ingredient, together with one or more pharmaceutically acceptable diluents or carriers therefore.
The administration of a pharmaceutical combination of the invention results not only in a beneficial effectrerg., ^synergistic therapeutic effect, e.g., with regard to inhibiting the unregulated proliferation of haematological stem cells or slowing down the progression of leukemias, such as CML or AML, or the growth of tumors, but also in further surprising beneficial effects, e.g., less side effects, an improved quality of life or a decreased morbidity, compared to a monotherapy applying only one of the pharmaceutically active ingredients used in the combination of the invention.
A further benefit is that lower doses of the active ingredients of the combination of the invention can be used, e.g., that the dosages need not only often be smaller but are also applied less frequently, or can be used in order to diminish the incidence of side effects. This is in accordance with the desires and requirements of the patients to be treated. The utility of the combinations of the present invention inhibiting the proliferation of leukemia cells for the treatment of leukemia can be demonstrated, e.g., in the proliferation test using Bcr-Abl transfected 32D cells as follows:
Bcr-Abl-transfected 32D cells (32D pGD p210 Bcr-Abl; Bazzoni et al., J CHn Invest, Vol. 98, No. 2, pp. 521-528 (1996)) are cultured in RPMI 1640 (BioConcept, Allschwil, Switzerland; Cat. No. 1-41 F01), 10% fetal calf serum, 2 mM glutamine. 10000 cells in 50 μL per well are seeded into flat bottom 96-well tissue culture plates. Complete medium alone (for controls) or serial three-fold dilutions of compounds are added in triplicates to a final volume of 100 μL and the cells are incubated at 37°C, 5% CO2 for 65-72 hours. The cell proliferation reagent WST-1 (Roche Diagnostics GmbH; Cat. No. 1 664 807) is added at 10 μL per well followed by 2 hours incubation at 37°C. Color development, depending on the amount of living cells, is measured at 440 nm. The effect for each compound is calculated as percent inhibition of the value (OD440) obtained for the control cells (100%) and plotted against the compound concentrations. The IC50S are calculated from the dose response curves by graphic extrapolation.
Compounds inhibiting the growth of 32D-Bcr-Abl cells can be further tested on IL-3 dependent 32D wt cells to prove the specificity of the compounds for the Bcr-Abl kinase and to exclude compound toxicity.
The proliferation test using Bcr-Abl transfected 32D cells with a COMBINATION OF THE INVENTION is carried out as described above with the following changes. Two combination partners are mixed in fixed ratios. Three-fold serial dilutions of this mixture or the combination partners alone are added to the cells seeded in 96-well tissue culture plates as described above. The effects on 32D-Bcr-Abl cell proliferation of a COMBINATION OF THE INVENTION is evaluated and compared with the effects of the single combination partners using CalcuSyn, a dose-effect analyzer software for single and multiple drugs (distributed by Biosoft, Cambridge).
Preferred are combinations wherein the JAK inhibitor is selected from the group consisting of:
Λ/-benzyl-3,4-dihydroxy-benzylidene-cyanoacetamide α-cyano-(3,4-dihydroxy)-]Λ/- benzylcinnamamide (Tyrphostin AG 490); prodigiosin 25-C (PNU156804); [4~(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P131 ); [4-(3'-bromo-4'-hydroxylphenyl)-amino-6,7-climethoxyquinazoline] (WHI-P154); [4-(3',5'-dibromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] WHI-P97; and
3-{(3/R,4f?)-4-methyl-3-[methyl-(7/-/-pyrrolo[2,3-c/]pyrimidin-4-yl)-annino]-piperidin-1-yl}-3- oxo-propionitrile, in free form or in salt form, e.g., mono-citrate (also called CP-690,550), and combinations thereof.
In another preferred embodiment, the Bcr-Abl, Flt-3 and RAF kinase inhibitor is selected from:
W-{5-[4-(4-methyl-piperazino-methyl)-benzoylamido]-2-methyl-phenyl}-4-(3-pyridyl)-2- pyrimidine-amine;
4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[5-(4-methyl-1H-imidazol-1-yl)-3- (trifluoromethyl)phenyl]benzamide;
N-{(BS, 10R111 R113R)-2,3, 10,11,12,13-hexahydro-10-methoxy-9-methyl-1 -oxo-9, 13- epoxy-1H,9H-diindolo[1 ,2,3-gh:3',2',1'-lm]pyrrolo[3,4-y][1 ,7]benzodiazonin-11-yl]-Λ/- methylbenzamide;
1-[4-(4-ethyl-piperazinyl-1-ylmethyl)-3-trifluoromethyl-phenyl]-3-[4-(6-methylamino- pyrimidin-4-yloxy-phenyl]-urea;
1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-ethyl-pipera∑in-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea;
1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-methyl-piperazin-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea;
(4-fert-butyl-phenyl)-(4-pyridin-4-ylmethyl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1 -yl-4-(terf-butyl-phenyl)-amine; (4-teAt-butyl-phenyl)-(4-quinazolin-6-yl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1-yl-(2-terf-butyl-pyrimidin-5-yl)-amine;
2-[5-chloro-2-(2-methoxy-4-morpholin-4-yl-phenylamino)-pyrimidin-4-ylamino]-Λ/-methyl- benzamide;
Λ/3-[4-(4-morpholin-4-yl-cyclohexyl)-phenyl]-1 -pyridin-2-yl-1 H-[\ ,2,4]triazole-3,5-diamine; and combinations thereof. B. Diseases to be treated
The term "proliferative disease" includes but is not restricted to tumors, psoriasis, restenosis, sclerodermas and fibrosis.
The term haematological malignancy, refers in particular to leukemias, especially those expressing Bcr-Abl, c-Kit or Flt-3, and includes, but is not limited to, chronic myelogenous leukemia and acute lymphocyte leukemia (ALL), especially the Philadelphia chromosome positive acute lymphocyte leukemia (Ph+ALL), as well as STI57l-resistant leukemia.
The term "a solid tumor disease" especially means ovarian cancer, breast cancer, cancer of the colon and generally the gastrointestinal tract, cervix cancer, lung cancer, e.g., small-cell lung cancer and non-small-cell lung cancer, head and neck cancer, bladder cancer, cancer of the prostate or Kaposi's sarcoma.
The combinations according to the invention, that inhibit the protein kinase activities mentioned, especially tyrosine protein kinases mentioned above and below, can therefore be used in the treatment of protein kinase dependent diseases. Protein kinase dependent diseases are especially proliferative diseases, preferably benign or especially malignant tumours (e.g., carcinoma of the kidneys, liver, adrenal glands, bladder, breast, stomach, ovaries, colon, rectum, prostate, pancreas, lungs, vagina or thyroid, sarcoma, glioblastomas and numerous tumours of the neck and head, as well as leukemias). They are able to bring about the regression of tumours and to prevent the formation of tumor metastases and the growth of (also micro)metastases. In addition, they can be used in epidermal hyperproliferation (e.g., psoriasis), in prostate hyperplasia, and in the treatment of neoplasias, especially of epithelial character, for example mammary carcinoma. It is also possible to use the combinations of the present invention in the treatment of diseases of the immune system insofar as several or, especially, individual tyrosine protein kinases are involved; furthermore, the combinations of the present invention can be used also in the treatment of diseases of the central or peripheral nervous system where signal transmission by at least one tyrosine protein kinase, especially selected from those mentioned specifically, is involved. Flt-3 (FMD-like tyrosine kinase) is especially expressed in hematopoietic progenitor cells and in progenitors of the lymphoid and myeloid series. Aberrant expression of the Flt-3 gene has been documented in both adult and childhood leukemias including AML (acute myelogenous leukemia), AML with trilineage myelodysplasia (AML/TMDS), ALL, CML (chronic myelogenous leukemia) and myelodysplastic syndrome (MDS), which are therefore the preferred diseases to be treated with compounds of the formula (I). Activating mutations in Flt-3 have been found in approximately 25-30% of patients with AML. Thus, there is accumulating evidence for the role of Flt-3 in human leukemias, and the combinations of the present invention, as Flt-3 inhibitors are especially of use in the therapy of this type of diseases (see Tse et al., Leukemia, Vol. 15, No. 7, pp. 1001-1010 (2001); Tomoki et al., Cancer Chemother Pharmacol, Vol. 48, Suppl. 1 , pp. S27-S30 (2001); Birkenkamp et al., Leukemia, Vol. 15, No. 12, pp. 1923-1921 (2001); Kelly et al., Neoplasia, Vol. 99, No. 1, pp. 310-318 (2002)).
In CML, a reciprocally balanced chromosomal translocation in hematopoietic stem cells (HSCs) produces the Bcr-Abl hybrid gene. The latter encodes the oncogenic Bcr-Abl fusion protein. Whereas ABL encodes a tightly regulated protein tyrosine kinase, which plays a fundamental role in regulating cell proliferation, adherence and apoptosis, the Bcr-Abl fusion gene encodes as constitutively activated kinase, which transforms HSCs to produce a phenotype exhibiting deregulated clonal proliferation, reduced capacity to adhere to the bone marrow stroma and a reduces apoptotic response to mutagenic stimuli, which enable it to accumulate progressively more malignant transformations. The resulting granulocytes fail to develop into mature lymphocytes and are released into the circulation, leading to a deficiency in the mature cells and increased susceptibility to infection. ATP-competitive inhibitors of Bcr-Abl have been described which prevent the kinase from activating mitogenic and anti-apoptotic pathways (e.g., P-3 kinase and STAT5), leading to the death of the Bcr- Abl phenotype cells and thereby providing an effective therapy against CML. The combinations of the present invention useful as Bcr-Abl inhibitors are thus especially appropriate for the therapy of diseases related to its όverexpression, especially leukemias, such as leukemias, e.g., CML or ALL.
The RAF kinase inhibiting property of the combinations of the present invention makes them useful as therapeutic agents for the treatment for proliferative diseases characterized by an aberrant MAP kinase signaling pathway, particularly many cancers characterized by overexpression of RAF kinase or an activating mutation of RAF kinase, such as melanoma having mutated B-RAF1 especially wherein the mutated B-RAF is the V599E mutant. The present invention also provides a method of treating other conditions characterized by an aberrant MAP kinase signaling pathway, particularly where B-RAF is mutated, e.g., benign Nevi moles having mutated B-RAF, with the combinations of the present invention.
In general, the disease characterized by excessive signaling through the MAP kinase signaling pathway is a proliferative disease, particularly a cancer characterized by increased RAF kinase activity, e.g., one which overexpresses wild-type B- or C-RAF kinase, or that expresses an activating mutant RAF kinase, e.g., a mutant B-RAF kinase. Cancers wherein a mutated RAF kinase has been detected include melanoma, colorectal cancer, ovarian cancer, gliomas, adenocarcinomas, sarcomas, breast cancer and liver cancer. Mutated B-RAF kinase is especially prevalent in many melanomas.
In accordance with the present invention, a sample of diseased tissue is taken from the patient, e.g., as a result of a biopsy or resection, and tested to determine whether the tissue produces a mutant RAF kinase, such as a mutant B-RAF kinase or overexpresses a wild- type RAF kinase, such as wild-type B- or C-RAF kinase. If the test indicates that mutant RAF kinase is produced or that a RAF kinase is overproduced in the diseased tissue, the patient is treated by administration of an effective RAF-inhibiting amount of a RAF inhibitor compound described herein.
Further in accordance with the invention is the use of combinations of the present invention described herein for the preparation of a medicament for the treatment of melanoma which comprises: (a) testing melanoma tissue from the patient to determine whether the melanoma tissue expresses mutant RAF kinase or overexpresses a wild-type RAF kinase; and (b) treating the patient if the melanoma tissue is found to overexpress a wild-type RAF kinase or express an activating mutant B-RAF kinase with an effective RAF kinase inhibiting amount of combinations of the present invention.
However, it is also possible to down-regulate the MAP kinase signaling pathway with a RAF kinase inhibiting compound if another kinase in the cascade is the cause of excessive signaling in the pathway. Thus, the present invention further relates to the treatment of a disease characterized by excessive signaling in the MAP kinase signaling pathway attributed to a cause other than an activating mutation in or overexpression of a RAF kinase. The combinations of the present invention primarily inhibit the growth of blood vessels and are thus, e.g., effective against a number of diseases associated with deregulated angiogenesis, especially diseases caused by ocular neovascularisation, especially retinopathies, such as diabetic retinopathy or age-related macula degeneration, psoriasis, haemangioblastoma, such as haemangioma, mesangial cell proliferative disorders, such as chronic or acute renal diseases, e.g., diabetic nephropathy, malignant nephrosclerosis, thrombotic microangiopathy syndromes or transplant rejection, or especially inflammatory renal disease, such as glomerulonephritis, especially mesangioproliferative glomerulonephritis, haemolytic-uraemic syndrome, diabetic nephropathy, hypertensive nephrosclerosis, atheroma, arterial restenosis, autoimmune diseases, diabetes, endometriosis, chronic asthma, and especially neoplastic diseases (solid tumors, but also leukemias and other haematological malignancies), such as especially breast cancer, cancer of the colon, lung cancer (especially small-cell lung cancer), cancer of the prostate or Kaposi's sarcoma. Combinations of the present invention inhibit the growth of tumours and are especially suited to preventing the metastatic spread of tumors and the growth of micrometastases.
The inhibition of endogenous FAK signalling results in reduced motility and in some cases induces cell death. On the other hand, enhancing FAK signalling by exogenous expression increases cell motility and transmitting a cell survival signal from ECM. In addition, FAK is overexpressed in invasive and metastatic epithelial, mesenchymal, thyroid and prostate cancers. Consequently, an inhibitor of FAK is likely to be a drug for anti-tumor growth and jiifilas.tasis.Jlιe_rømpjiurj£ls_arøJhusJαdJ.cated,_e.g,, to_pceventand/or treat a vertebrate and more particularly a mammal, affected by a neoplastic disease, in particular, breast tumor, cancer of the bowel (colon and rectum), stomach cancer and cancer of the ovary and prostate, non-small cell lung cancer, small cell lung cancer, cancer of liver, melanoma, bladder tumor and cancer of head and neck.
The invention relates to a method of treating myeloma, especially myeloma which is resistant to conventional chemotherapy. The term "myeloma", as used herein, relates to a tumour composed of cells of the type normally found in the bone marrow. The term "multiple myeloma", as used herein, means a disseminated malignant neoplasm of plasma cells which is characterized by multiple bone marrow tumor foci and secretion of an M component (a monoclonal immunoglobulin fragment), associated with widespread osteolytic lesions resulting in bone pain, pathologic fractures, hypercalcaemia and normochromic normocytic anaemia. Multiple myeloma is incurable by the use of conventional and high-dose chemotherapies. The invention relates to a method of treating myeloma, especially myeloma which is resistant to conventional chemotherapy.
A preferred embodiment of the present invention is the combination of a RAF inhibitor and a JAK kinase inhibitor for the treatment of myelomas, especially multiple myeloma. Most especially preferred is the combination of a RAF inhibitor selected from:
(4-fert-butyl-phenyl)-(4-pyridin-4-ylmethyl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1-yl-4-(te/if-butyl-phenyl)-amine; (4-fert-butyl-phenyl)-(4-quinazolin-6-yl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1-yl-(2-terf-butyl-pyrimidin-5-yl)-amine; and combinations thereof, and a JAK kinase inhibitors selected from:
Λ/-benzyl-3,4-dihydroxy-benzylidene-cyanoacetamide α-cyano-(3,4-dihydroxy)-]Λ/- benzylcinnamamide (Tyrphostin AG 490); prodigiosin 25-C (PNU156804);
[4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P131 ); [4-(3'-bromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P154); [4-(3',5'-dibromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] WHI-P97; and
3-{(3R,4f?)-4-methyl-3-[methyl-(7H-pyrrolo[2,3-c/]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3- oxo-propionitrile, in free form or in salt form, e.g., mono-citrate (also called CP-690,550) for the treatment of myeloma, especially multiple myeloma.

Claims

WE CLAIM:
1. A pharmaceutical combination comprising: a) at least one agent selected from Bcr-Abl, Flt-3, FAK and RAF kinase inhibitors; and b) at least one subtype-selective or subtype unselective JAK kinase inhibitor.
2. A method for treating or preventing a proliferative disease in a subject in need thereof, comprising co-administration to said subject, e.g., concomitantly or in sequence, of a therapeutically effective amount of at least one agent selected from Bcr-Abl, Flt-3, FAK and RAF kinase inhibitors and at least one JAK3 kinase inhibitor.
3. A pharmaceutical combination according to Claim 1 , for use in a method according to Claim 2.
4. A pharmaceutical combination according to Claim 1 , for use in the preparation of a medicament for use in a method according to Claim 2.
5. A pharmaceutical combination according to Claim 1 , wherein agent a) is selected from:
Λ/-{5-[4-(4-methyl-piperazino-methyl)-benzoylamido]-2-methyl-phenyl}-4-(3-pyridyl)-2- pyrimidine-amine;
4=methyl--34[4=(3φyπdinyl)-2--pyr-imidinyl]amino]-A/=[5-(4=methyl--1H^ (trifluoromethyl)phenyl]benzamide;
Λ/-[(9S,10R,11R,13f?)-2,3,10,11 ,12,13-hexahydro-10-methoxy-9-methyl-1-oxo-9,13- epoxy-1 /-/,9H-diindolo[1 ,2,3-gh:3',2', 1 '-lm]pyrrolo[3,4-y][1 ,7]benzodiazonin-11 -yl]-Λ/- methylbenzamide;
1-[4-(4-ethyl-piperazinyl-1-ylmethyl)-3-trifluoromethyl-phenyl]-3-[4-(6-methylamino- pyrimidin-4-yloxy-phenyl]-urea;
1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-ethyl-piperazin-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea;
1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-methyl-piperazin-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea; (4-terf-butyl-phenyl) -(4-pyridin-4-ylmethyl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1-yl-4-(terf-butyl-phenyl)-amine; (4-te/t-butyl-phenyl)-(4-quinazolin-6-yl-isoquinolin-1-yl)-amine; [4,7'3biisoquinolinyl-1-yl-(2-te/t-butyl-pyrimidin-5-yl)-amine;
2-[5-chloro-2-(2-methoxy-4-morpholin-4-yl-phenylarnino)-pyrimidin-4-ylamino]-Λ/-rnethyl- benzamide; and
Λ/3-[4-(4-morpholin-4-yl-cyclohexyl)-phenyl]-1 -pyridin-2-yl-1 H-[1 ,2,4]triazole-3,5-diamine; and combinations thereof.
6. A pharmaceutical combination according to Claim 1 , wherein agent b) is selected from:
Λ/-benzyl-3,4-dihydroxy-benzylidene-cyanoacetamide α-cyano-(3,4-dihydroxy)-]Λ/- benzylcinnamamide (Tyrphostin AG 490); prodigiosin 25-C (PNU156804);
[4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P131); [4-(3'-bromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P154); [4-(3',5'-dibromo-41-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] WHI-P97; and
3-{(3R,4R)-4-methyl-3-[methyl-(7/-/-pyrrolo[2,3-c/3pyrimidin-4-yl)-amino]-piperidin-1-yl}-3- oxo-propionitrile, in free form or in salt form, e.g., mono-citrate (also called CP-690,550); and combinations thereof.
7. A method according to Claim 2, wherein agent a) is selected from:
Λ/-{5-[4-(4-methyl-piperazino-methyl)-benzoylamido]-2-methyl-phenyl}-4-(3-pyridyl)-2- pyrimidine-amine;
4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]-Λ/-[5-(4-methyl-1/-/-imidazol-1-yl)-3- (trifluoromethyl)phenyl]benzamide;
Λ/-[(9S, 10R, 11 R113R)-2,3, 10111 ,12,13-hexahydro-10-methoxy-9-methyl-1 -oxo-9, 13- epoxy-1H,9H-diindolo[1 ,2,3-gh:3',2',1'-lm]pyrrolo[3,4-y][1 ,7]benzodiazonin-11-yl]-/V- methylbenzamide;
1-[4-(4-ethyl-piperazinyl-1-ylmethyl)-3-trifluoromethyl-phenyl]-3-[4-(6-methylamino- pyrimidin-4-yloxy-phenyl]-urea; 1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-ethyl-piperazin-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea;
1-[4-(2-amino-pyrimidin-4-yloxy)-phenyl]-3-[4-(4-methyl-piperazin-1-ylmethyl)-3- trifluoromethyl-phenyl]-urea;
(4-tert-butyI-phenyl)-(4-pyridin-4-ylmethyl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1-yl-4-(terf-butyl-phenyl)-amine; (4-terf-butyl-phenyl)-(4-quinazolin-6-yl-isoquinolin-1-yl)-amine; and [4,7']biisoquinolinyl-1-yl-(2-terf-butyl-pyrimidin-5-yl)-amine;
2-[5-chloro-2-(2-methoxy-4-rnorpholin-4-yl-phenylamino)-pyrimidin-4-ylamino]-Λ/-methyl- benzamide; and
Λ/3-[4-(4-morpholin-4-yl-cyclohexyl)-phenyl]-1 -pyridin-2-yl-1 H-[λ ,2,4]triazole-3,5-diamine; and combinations thereof.
8. A method according to Claim 2, wherein agent b) is selected from:
Λ/-benzyl-3,4-dihydroxy-benzylidene-cyanoacetamide α-cyano-(3,4-dihydroxy)-]Λ/- benzylcinnamamide (Tyrphostin AG 490); prodigiosin 25-C (PNU156804);
[4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P131); [4-(3'-bromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P154); [4-(3',5'-dibromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] WHI-P97;
3-{(3R,4R)-4-methyl-3-[methyl-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3- -øxo-propionitr-ile,- in free form or in salt form, e.g., mono-citrate (also called CP-690,550); and combinations thereof.
9. A method for myeloma comprising administering a combination of a RAF inhibitor and a JAK kinase inhibitor wherein the RAF inhibitor is selected from:
(4-terf-butyl-phenyl)-(4-pyridin-4-ylmethyl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1-yl-4-(tert-butyl-phenyl)-amine; (4-terf-butyl-phenyl)-(4-quinazolin-6-yl-isoquinolin-1-yl)-amine; [4,7']biisoquinolinyl-1-yl-(2-ferf-butyl-pyrimidin-5-yl)-amine; and combinations thereof, and the JAK kinase inhibitor is selected from: Λ/-benzyl-3,4-dihydroxy-benzylidene-cyanoacetamide α-cyano-(3,4-dihydroxy)-]Λ/- benzylcinnamamide (Tyrphostin AG 490); prodigiosin 25-C (PNU156804); [4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P131 ); [4-(3'-bromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] (WHI-P154); [4-(3',5'-dibromo-4'-hydroxylphenyl)-amino-6,7-dimethoxyquinazoline] WHI-P97;
3-{(3R,4f?)-4-methyl-3-[methyl-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3- oxo-propionitrile, in free form or in salt form, e.g., mono-citrate (also called CP-690,550); and combinations thereof.
PCT/EP2005/012480 2004-11-24 2005-11-22 Combinations of jak inhibitors and at least one of bcr-abl, flt-3, fak or raf kinase inhibitors Ceased WO2006056399A2 (en)

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AU2005309019A AU2005309019A1 (en) 2004-11-24 2005-11-22 Combinations of JAK inhibitors and at least one of Bcr-Abl, Flt-3, FAK or RAF kinase inhibitors
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MX2007006204A (en) 2007-06-20
WO2006056399A3 (en) 2006-08-31
EP1885352A2 (en) 2008-02-13
US20130338168A1 (en) 2013-12-19
KR20070085433A (en) 2007-08-27
CN101106983A (en) 2008-01-16
BRPI0517887A (en) 2008-10-21

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