WO2003066565A1 - Deuterated biphenyl derivatives - Google Patents
Deuterated biphenyl derivatives Download PDFInfo
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- WO2003066565A1 WO2003066565A1 PCT/DE2003/000367 DE0300367W WO03066565A1 WO 2003066565 A1 WO2003066565 A1 WO 2003066565A1 DE 0300367 W DE0300367 W DE 0300367W WO 03066565 A1 WO03066565 A1 WO 03066565A1
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- trideuteromethyl
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D257/00—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
- C07D257/02—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D257/04—Five-membered rings
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- C07—ORGANIC CHEMISTRY
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- C07C233/00—Carboxylic acid amides
- C07C233/64—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings
- C07C233/65—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/49—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C255/50—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of non-condensed six-membered aromatic rings
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
- C07C63/33—Polycyclic acids
- C07C63/331—Polycyclic acids with all carboxyl groups bound to non-condensed rings
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
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- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/08—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D263/10—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
- C07D263/12—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms with radicals containing only hydrogen and carbon atoms
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/08—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D263/10—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
- C07D263/14—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms with radicals substituted by oxygen atoms
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/22—Tin compounds
- C07F7/2208—Compounds having tin linked only to carbon, hydrogen and/or halogen
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Definitions
- the invention relates to deuterated biphenyl derivatives and deuterated precursors for the preparation of these compounds.
- Deuterated biphenyl derivatives are important intermediates for the synthesis of drugs, in particular the so-called “- sartans", which can be used, for example, for the treatment of circulatory disorders, high blood pressure and heart diseases.
- the Ullmann reaction can be used to produce symmetrically and asymmetrically substituted biphenyls.
- halogen aryl compounds preferably iodine compounds, are used in the presence of copper at high
- the object of the present invention is therefore to provide deuterated biphenyl derivatives which can be used in particular in the manufacture of deuterated medicaments.
- R 1 is independently of one another H or D
- R 2 is C-C3-al yl or Ci-Cs-alkyl substituted by one or more halogen atoms, hydroxy groups, sulfhydroxy groups, phosphate groups or sulfate groups, which can be partially or completely deuterated
- R 3 is a carboxyl or deuterated carboxyl group, a carbamide or deuterated carbamide group, a cyano group, an oxazoline group, a tetrazole group, a deuterated tetrazole group, a substituted tetrazole group, N- (trimethylstannyl) pyrazole group, a deuterated N- (trimethylstannyl) ) pyrazole group, a pyrazole group, a deuterated pyrazole group or a pyrazole group substituted with a triphenylmethyl group or with a deuterated triphenylmethyl group, these groups in turn being substituted by one or more C 1 -C 3 -alkyl groups, halogen atoms, hydroxyl groups, sulfhydroxy groups, phosphate groups or sulfate groups -Ca-alkyl, which can be partially or completely deuterated and wherein at least one of the radicals R 1 to
- Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is a carbamide group or a deuterated carbamide group are particularly preferred.
- Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is an N- (trimethylstannyl) pyrazole group are particularly preferred.
- Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is a pyrazole group or a deuterated pyrazole group are advantageous.
- Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is a pyrazole group which is substituted by a triphenylmethyl group are particularly advantageous.
- Deuterated biphenyl derivatives of the general formula I in which R 1 is independent of one another H or D, R 2 is a bromideideuteromethyl group are particularly advantageous and R 3 represents a pyrazole group substituted by a triphenylmethyl group.
- the object of the invention is achieved by the provision of
- the deuterated acid chloride is generated and this is reacted with 2-amino-2-methyl-l-propanol to give the deuterated 4,4-dimethyl-2- (2-methoxyphenyl) oxazoline.
- This oxazoline is further processed with deuterated 4-methylphenyl-Grignard reagent, obtained from deuterated 4-bromotoluene, to give deuterated 2- (4'-methylbiphenyl-2-yl) -4, 4-dimethyloxazoline.
- deuterated 4'-methyl-2-biphenylcarboxylic acid is obtained from this by heating in deuterium chloride solution.
- the deuterated 4'-methyl-2-biphenylcarboxylic acid is converted to deuterated 4'-methyl-2-biphenylnitrile via the acid amide which is obtained from the acid chloride with ammonium hydroxide solution.
- Methyl 2-biphenyl nitrile with trimethyltin azide obtained N-trimethylstannyl-5- (4'-methylbiphenyl-2-yl) etrazole.
- the tetrazole group is subsequently protected by reaction with trityl chloride and the deuterated N-triphenylmethyl-5- (4'-methylbiphenyl-2-yl) tetrazole obtained is converted into the deuterated (bromomethyl) biphenyl derivative with N-bromosuccinimide.
- the product is prepared by dissolving 33 g of N-trimethylstannyl-5- (dll-4 '- methylbiphenyl-2-yl) tetrazole in a mixture of toluene and tetrahydrofuran and so long dry deuterium chloride at room temperature through the solution is blown until a clear solution is obtained.
- the product crystallizes out of the solution and is obtained
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Abstract
Description
Deuterierte Biphenylderivate Deuterated biphenyl derivatives
Die Erfindung betrifft deuterierte Biphenylderivate sowie deuterierte Vorstufen zur Herstellung dieser Verbindungen.The invention relates to deuterated biphenyl derivatives and deuterated precursors for the preparation of these compounds.
Deuterierte Biphenylderivate sind wichtige Zwischenstufen für die Synthese von Arzneimitteln, insbesondere der so- genannten ,,-sartane", die beispielsweise zur Behandlung von Durchblutungsstörungen, Bluthochdruck und Herzkrankheiten eingesetzt werden können.Deuterated biphenyl derivatives are important intermediates for the synthesis of drugs, in particular the so-called "- sartans", which can be used, for example, for the treatment of circulatory disorders, high blood pressure and heart diseases.
Es sind verschiedene Verfahren zur Herstellung von Biphe- nylderivaten bekannt.Various processes for the preparation of biphenyl derivatives are known.
So kann die Ullmann-Reaktion zur Herstellung symmetrisch und unsymmetrisch substituierter Biphenyle verwendet werden. Hierfür werden Halogenarylverbindungen, bevorzugt Iod-Verbindungen, in Anwesenheit von Kupfer bei hohenThe Ullmann reaction can be used to produce symmetrically and asymmetrically substituted biphenyls. For this, halogen aryl compounds, preferably iodine compounds, are used in the presence of copper at high
Temperaturen miteinander zur Reaktion gebracht. Einen Ü- berblick über Verfahren zur Ausbildung von Aryl-Aryl- Bindungen gibt der Übersichtsartikel „Modern Methods Of Aryl-Aryl Bond Formation" von M. Sainsbury [Tetrahedron, 36, 3327-3359 (1980) ] .Temperatures reacted with each other. The review article "Modern Methods Of Aryl-Aryl Bond Formation" by M. Sainsbury [Tetrahedron, 36, 3327-3359 (1980)] provides an overview of methods for forming aryl-aryl bonds.
Aufgabe der vorliegenden Erfindung ist es also, deuterierte Biphenylderivate bereitzustellen, die insbesondere bei der Herstellung deuterierter Arzneimittel verwendet werden können.The object of the present invention is therefore to provide deuterated biphenyl derivatives which can be used in particular in the manufacture of deuterated medicaments.
Die Aufgabe wird erfindungsgemäß gelöst durch die Bereitstellung von deuterierten Biphenylderivaten der allgemeinen Formel I : The object is achieved according to the invention by providing deuterated biphenyl derivatives of the general formula I:
Formel IFormula I.
worin R1 unabhängig voneinander H oder D ist, R2 Cι-C3-Al yl oder mit einem oder mehreren Halogenatomen, Hydroxygruppen, Sulfhydroxygruppen, Phosphatgruppen oder Sulfatgruppen substituiertes Ci-Cs-Alkyl, das teilweise oder vollständig deuteriert sein kann, bedeutetwherein R 1 is independently of one another H or D, R 2 is C-C3-al yl or Ci-Cs-alkyl substituted by one or more halogen atoms, hydroxy groups, sulfhydroxy groups, phosphate groups or sulfate groups, which can be partially or completely deuterated
R3 eine Carboxyl- oder deuterierte Carboxylgruppe, eine Carbamid- oder deuterierte Carbamidgruppe, eine Cya- nogruppe, eine Oxazolingruppe, eine Tetrazolgruppe, eine deuterierte Tetrazolgruppe, eine substituierte Tetra- zolgruppe, N- (Trimethylstannyl) pyrazolgruppe, eine deuterierte N- (Trimethylstannyl)pyrazolgruppe, eine Pyra- zolgruppe, eine deuterierte Pyrazolgruppe oder eine mit einer Triphenylmethylgruppe oder mit einer deuterierten Triphenylmethylgruppe substituierte Pyrazolgruppe ist, wobei diese Gruppen ihrerseits mit einem oder mehreren Cι-C3-Alkylgruppen, Halogenatomen, Hydroxygruppen, Sulfhydroxygruppen, Phosphatgruppen oder Sulfatgruppen substituiertes Ci-Ca-Alkyl, das teilweise oder vollständig deuteriert sein kann und wobei mindestens einer der Reste R1 bis R3 Deuterium ist oder Deuterium enthält. Erfindungsgemäß weiterhin bevorzugt sind deuterierte Biphenylderivate der allgemeinen Formel I, worin R1 unabhängig voneinander H oder D ist, R2 Trideutero- methyl ist und R3 eine Carboxyl- oder deuterierte Carbo- xylgruppe bedeutet.R 3 is a carboxyl or deuterated carboxyl group, a carbamide or deuterated carbamide group, a cyano group, an oxazoline group, a tetrazole group, a deuterated tetrazole group, a substituted tetrazole group, N- (trimethylstannyl) pyrazole group, a deuterated N- (trimethylstannyl) ) pyrazole group, a pyrazole group, a deuterated pyrazole group or a pyrazole group substituted with a triphenylmethyl group or with a deuterated triphenylmethyl group, these groups in turn being substituted by one or more C 1 -C 3 -alkyl groups, halogen atoms, hydroxyl groups, sulfhydroxy groups, phosphate groups or sulfate groups -Ca-alkyl, which can be partially or completely deuterated and wherein at least one of the radicals R 1 to R 3 is deuterium or contains deuterium. Also preferred according to the invention are deuterated biphenyl derivatives of the general formula I, in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is a carboxyl or deuterated carboxyl group.
Insbesondere bevorzugt sind deuterierte Biphenylderivate der allgemeinen Formel I, worin R1 unabhängig voneinander H oder D ist, R2 Trideuteromethyl ist und R3 eine Carba- midgruppe oder eine deuterierte Carbamidgruppe bedeutet.Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is a carbamide group or a deuterated carbamide group are particularly preferred.
Besonders bevorzugt sind deuterierte Biphenylderivate der allgemeinen Formel I, worin R1 unabhängig voneinander H oder D ist, R2 Trideuteromethyl ist und R3 eine N- (Trimethylstannyl) pyrazolgruppe bedeutet.Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is an N- (trimethylstannyl) pyrazole group are particularly preferred.
Vorteilhaft sind deuterierte Biphenylderivate der allgemeinen Formel I, worin R1 unabhängig voneinander H oder D ist, R2 Trideuteromethyl ist und R3 eine Pyrazolgruppe o- der eine deuterierte Pyrazolgruppe bedeutet.Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is a pyrazole group or a deuterated pyrazole group are advantageous.
Besonders vorteilhaft sind deuterierte Biphenylderivate der allgemeinen Formel I, worin R1 unabhängig voneinander H oder D ist, R2 Trideuteromethyl ist und R3 eine Pyra- zolgruppe bedeutet, die durch eine Triphenylmethylgruppe substituiert ist.Deuterated biphenyl derivatives of the general formula I in which R 1 is independently H or D, R 2 is trideuteromethyl and R 3 is a pyrazole group which is substituted by a triphenylmethyl group are particularly advantageous.
Insbesondere vorteilhaft sind deuterierte Biphenylderivate der allgemeinen Formel I, worin R1 unabhängig vonein- ander H oder D ist, R2 eine Bromdideuteromethylgruppe ist und R3 eine Pyrazolgruppe bedeutet, die durch eine Triphenylmethylgruppe substituiert ist.Deuterated biphenyl derivatives of the general formula I in which R 1 is independent of one another H or D, R 2 is a bromideideuteromethyl group are particularly advantageous and R 3 represents a pyrazole group substituted by a triphenylmethyl group.
Die Aufgabe der Erfindung wird gelöst durch die Bereit- Stellung vonThe object of the invention is achieved by the provision of
dl2-4' -Methyl-2-biphenylcarbonsäure,dl2-4 'methyl-2-biphenylcarboxylic acid,
4 ' -Trideuteromethyl-d8-biphenyl-2-carbonsäure,4'-trideuteromethyl-d8-biphenyl-2-carboxylic acid,
2 ' , 3' , 5' , 6' -Tetradeutero-4' - (trideuteromethyl) -2- biphenylcarbonsäure,2 ', 3', 5 ', 6' -Tetradeutero-4 '- (trideuteromethyl) -2- biphenylcarboxylic acid,
3,4,5, β-Tetradeutero-4' - (trideuteromethyl) -2- biphenylcarbonsäure,3,4,5, β-tetradeutero-4 '- (trideuteromethyl) -2- biphenylcarboxylic acid,
dl2-4' -Methyl-2-biphenylcarbonsäure-tert-butylester,dl2-4 'methyl-2-biphenylcarboxylic acid tert-butyl ester,
4' -Trideuteromethyl-d8-biphenyl-2-carbonsäure-tert- butylester,4'-trideuteromethyl-d8-biphenyl-2-carboxylic acid tert-butyl ester,
2 ' , 3' , 5' , 6' -Tetradeutero-4' - (trideuteromethyl) -2- biphenylcarbonsäure-tert-butylester,2 ', 3', 5 ', 6' -tetradeutero-4 '- (trideuteromethyl) -2-biphenylcarboxylic acid tert-butyl ester,
3,4, 5, β-Tetradeutero-4' - (trideuteromethyl) -2- biphenylcarbonsäure-tert-butylester,3,4, 5, β-tetradeutero-4 '- (trideuteromethyl) -2-biphenylcarboxylic acid tert-butyl ester,
4 ' -Trideuteromethyl-d8-biphenyl-2-carbonsäureamid,4'-trideuteromethyl-d8-biphenyl-2-carboxamide,
2 ' , 3' , 5' , 6' -Tetradeutero-4' - (trideuteromethyl) -2- biphenylcarbonsäureamid, 3,4,5, 6-Tetradeutero-4' - (trideuteromethyl) -2- biphenylcarbonsäureamid,2 ', 3', 5 ', 6' -Tetradeutero-4 '- (trideuteromethyl) -2- biphenylcarboxamide, 3,4,5,6-tetradeutero-4 '- (trideuteromethyl) -2- biphenylcarboxamide,
dll-4' -Methyl-2-biphenylnitril,dll-4 'methyl-2-biphenylnitrile,
2 ' , 3' , 5' , 6' -Tetradeutero-4' - (trideuteromethyl) -2- biphenylnitril,2 ', 3', 5 ', 6' -Tetradeutero-4 '- (trideuteromethyl) -2- biphenylnitrile,
3,4,5, β-Tetradeutero-4' - (trideuteromethyl) -2- biphenylnitril,3,4,5, β-tetradeutero-4 '- (trideuteromethyl) -2- biphenylnitrile,
N-Trimethylstannyl-5- (dll-4' -methylbiphenyl-2- yl) tetrazol,N-trimethylstannyl-5- (dll-4'-methylbiphenyl-2-yl) tetrazole,
N-Trimethylstannyl-5- [2 r , 3' , 5' , 6' -tetradeutero-4' - (trideuteromethyl) biphenyl-2-yl] tetrazol,N-trimethylstannyl-5- [2 r , 3 ', 5', 6 '-tetradeutero-4' - (trideuteromethyl) biphenyl-2-yl] tetrazole,
N-Trimethylstannyl-5- [3,4,5, β-tetradeutero-4' - (trideuteromethyl) biphenyl-2-yl] tetrazol,N-trimethylstannyl-5- [3,4,5, β-tetradeutero-4 '- (trideuteromethyl) biphenyl-2-yl] tetrazole,
5- (dll-4' -Methylbiphenyl-2-yl) -lD-tetrazol,5- (dll-4 '-methylbiphenyl-2-yl) -ID-tetrazole,
5- [2' , 3' , 5' , 6' -Tetradeutero-4' - (trideuteromethyl) biphenyl-2-yl] -lD-tetrazol,5- [2 ', 3', 5 ', 6' -tetradeutero-4 '- (trideuteromethyl) biphenyl-2-yl] -ID-tetrazole,
5- [3, 4, 5, 6-Tetradeutero-4' - (trideuteromethyl) biphenyl-2- yl] -lD-tetrazol,5- [3, 4, 5, 6-tetradeutero-4 '- (trideuteromethyl) biphenyl-2-yl] -ID-tetrazole,
5- (dll-4' -Methylbiphenyl-2-yl) -lH-tetrazol, 5- [2' , 3' , 5' , 6' -Tetradeutero-4' - (trideuteromethyl) biphenyl-2-yl] -lH-tetrazol,5- (dll-4 '-methylbiphenyl-2-yl) -lH-tetrazole, 5- [2 ', 3', 5 ', 6' -tetradeutero-4 '- (trideuteromethyl) biphenyl-2-yl] -lH-tetrazole,
5- [3, 4, 5, β-Tetradeutero-4' - (trideuteromethyl) biphenyl-2- yl] -lH-tetrazol,5- [3, 4, 5, β-tetradeutero-4 '- (trideuteromethyl) biphenyl-2-yl] -lH-tetrazole,
N-Triphenylmethyl-5- (dll-4' -methylbiphenyl-2-yl) tetrazol,N-triphenylmethyl-5- (dll-4'-methylbiphenyl-2-yl) tetrazole,
N-Triphenylmethyl-5- [2' , 3' , 5' , 6' -tetradeutero-4' - (trideuteromethyl) biphenyl-2-yl] tetrazol,N-triphenylmethyl-5- [2 ', 3', 5 ', 6' -tetradeutero-4 '- (trideuteromethyl) biphenyl-2-yl] tetrazole,
N-Triphenylmethyl-5- [3,4,5, β-tetradeutero- ' - (trideuteromethyl) biphenyl-2-yl] tetrazol,N-triphenylmethyl-5- [3,4,5, β-tetradeutero- '- (trideuteromethyl) biphenyl-2-yl] tetrazole,
N-Triphenylmethyl-5- [dlO-4' - (brommethyl) biphenyl-2- yl] tetrazol,N-triphenylmethyl-5- [dlO-4 '- (bromomethyl) biphenyl-2-yl] tetrazole,
N-Triphenylmethyl-5- [4' - (bromdideuteromethyl) - 2' , 3' , 5' , 6' -tetradeuterobiphenyl-2-yl] tetrazol,N-triphenylmethyl-5- [4 '- (bromideideuteromethyl) - 2', 3 ', 5', 6 '-tetradeuterobiphenyl-2-yl] tetrazole,
N-Triphenylmethyl-5- [4' - (bromdideuteromethyl) -3,4,5,6- tetradeuterobiphenyl-2-yl] tetrazol,N-triphenylmethyl-5- [4 '- (bromideideuteromethyl) -3,4,5,6-tetradeuterobiphenyl-2-yl] tetrazole,
4, 4-Dimethyl-2- (2-methoxy-d4-phenyl) oxazolin,4,4-dimethyl-2- (2-methoxy-d4-phenyl) oxazoline,
2- (dll-4' -Methylbiphenyl-2-yl) -4, 4-dimethyloxazolin,2- (dll-4 '-methylbiphenyl-2-yl) -4, 4-dimethyloxazoline,
2- [2' , 3' , 5' , 6' -Tetradeutero-4' -2- [2 ', 3', 5 ', 6' -Tetradeutero-4 '-
(trideuteromethyl) biphenyl-2-yl] -4, 4-dimethyloxazolin sowie 2- [3, 4, 5, 6-Tetradeutero-4' - (trideuteromethyl) biphenyl-2- yl] -4, 4-dimethyloxazolin.(trideuteromethyl) biphenyl-2-yl] -4, 4-dimethyloxazoline and 2- [3, 4, 5, 6-Tetradeutero-4 '- (trideuteromethyl) biphenyl-2-yl] -4, 4-dimethyloxazoline.
Zur Herstellung der erfindungsgemäßen Biphenylderivate wird das Verfahren von A. I. Meyers und E. D. Mihelich [J. Am. Chem. Soc, 97, 7383 (1975)], das auch in EP 733366 beschrieben wird, auf die Herstellung der deu- terierten Verbindungen adaptiert, unter Verwendung von deuterierten Edukten mit einem Deuterierungsgrad über 98%.To prepare the biphenyl derivatives according to the invention, the method of A.I. Meyers and E.D. Mihelich [J. At the. Chem. Soc, 97, 7383 (1975)], which is also described in EP 733366, is adapted to the preparation of the interpreted compounds using deuterated starting materials with a degree of deuteration above 98%.
Ausgehend von deuterierter Methoxybenzoesäure wird das deuterierte Säurechlorid erzeugt und dieses mit 2-Amino- 2-methyl-l-propanol zum deuterierten 4, 4-Dimethyl-2- (2- methoxyphenyl) oxazolin umgesetzt.Starting from deuterated methoxybenzoic acid, the deuterated acid chloride is generated and this is reacted with 2-amino-2-methyl-l-propanol to give the deuterated 4,4-dimethyl-2- (2-methoxyphenyl) oxazoline.
Dieses Oxazolin wird mit deuteriertem 4-Methylphenyl- Grignardreagenz, erhalten aus deuteriertem 4-Bromtoluol, zu deuteriertem 2- (4' -Methylbiphenyl-2-yl) -4, 4- dimethyloxazolin weiterverarbeitet. Aus diesem wird durch Erhitzen in Deuteriumchloridlösung die deuterierte 4'- Methyl-2-biphenylcarbonsäure erhalten.This oxazoline is further processed with deuterated 4-methylphenyl-Grignard reagent, obtained from deuterated 4-bromotoluene, to give deuterated 2- (4'-methylbiphenyl-2-yl) -4, 4-dimethyloxazoline. The deuterated 4'-methyl-2-biphenylcarboxylic acid is obtained from this by heating in deuterium chloride solution.
Die deuterierte 4' -Methyl-2-biphenylcarbonsäure wird über das Säureamid, das mit Ammoniumhydroxidlösung aus dem Säurechlorid erhalten wird, zu deuteriertem 4' -Methyl-2- biphenylnitril umgesetzt.The deuterated 4'-methyl-2-biphenylcarboxylic acid is converted to deuterated 4'-methyl-2-biphenylnitrile via the acid amide which is obtained from the acid chloride with ammonium hydroxide solution.
Analog zu EP 291969 wird nun aus dem deuterierten 4'-Analogous to EP 291969, the deuterated 4'-
Methyl-2-biphenylnitril mit Trimethylzinnazid das deute- rierte N-Trimethylstannyl-5- (4' -methylbiphenyl-2- yl) etrazol erhalten.Methyl 2-biphenyl nitrile with trimethyltin azide obtained N-trimethylstannyl-5- (4'-methylbiphenyl-2-yl) etrazole.
In Abwandlung der bekannten Vorschrift wird dieses mit Deuteriumchlorid in das deuterierte 5- (4' -Methylbiphenyl- 2-yl) tetrazol überführt.In a modification of the known regulation, this is converted into the deuterated 5- (4 '-methylbiphenyl-2-yl) tetrazole using deuterium chloride.
Die Tetrazolgruppe wird nachfolgend durch Umsetzung mit Tritylchlorid geschützt und das erhaltene deuterierte N- Triphenylmethyl-5- (4' -methylbiphenyl-2-yl) tetrazol mit N- Bromsuccinimid in das deuterierte (Brommethyl) biphenylderivat überführt .The tetrazole group is subsequently protected by reaction with trityl chloride and the deuterated N-triphenylmethyl-5- (4'-methylbiphenyl-2-yl) tetrazole obtained is converted into the deuterated (bromomethyl) biphenyl derivative with N-bromosuccinimide.
Die folgenden Beispiele erläutern die Erfindung:The following examples illustrate the invention:
Beispiel 1example 1
Herstellung von 2-Methoxy-3, 4, 5, 6-d4-benzoylchlorid 15,7 g 2-Methoxy-d5-benzoesäure werden in an sich bekannter Weise mit Thionylchlorid zur Reaktion gebracht. Dazu wird die deuterierte 2-Methoxybenzoesäure tropfenweise mit 25 ml Thionylchlorid versetzt, das Reaktionsgemisch für 20 Stunden bei Raumtemperatur gerührt und anschließend das überschüssige Thionylchlorid abdestilliert. Das Reaktionsprodukt wird durch Vakuumdestillation isoliert. Es werden 14,85 g 2-Methoxy-3, 4, 5, 6-d4-benzoylchlorid als farblose Flüssigkeit erhalten. Sdp.: 127-128.°C (8 torr) Ausbeute: 85% berechnet : C: 55,03 %; H: 6,35 % gefunden: C: 55,00 %; H: 6,37 % Beispiel 2Preparation of 2-methoxy-3, 4, 5, 6-d4-benzoyl chloride 15.7 g of 2-methoxy-d5-benzoic acid are reacted with thionyl chloride in a manner known per se. To this end, the deuterated 2-methoxybenzoic acid is added dropwise with 25 ml of thionyl chloride, the reaction mixture is stirred for 20 hours at room temperature and then the excess thionyl chloride is distilled off. The reaction product is isolated by vacuum distillation. 14.85 g of 2-methoxy-3, 4, 5, 6-d4-benzoyl chloride are obtained as a colorless liquid. Bp: 127-128 ° C (8 torr) Yield: 85% calculated: C: 55.03%; H: 6.35% found: C: 55.00%; H: 6.37% Example 2
Herstellung von 4, 4-Dimethyl-2- (2-methoxy-d4- phenyl) oxazolinPreparation of 4, 4-dimethyl-2- (2-methoxy-d4-phenyl) oxazoline
Die Herstellung erfolgt in an sich bekannter Weise. 17 g 2-Amino-2-methyl-l-propanol werden in Dichlormethan gelöst und die eisgekühlte Lösung mit einer Lösung von 14,75 g 2-Methoxy-3, 4, 5, 6-d4-benzoylchlorid in Dichlor- methan tropfenweise versetzt. Nach beendeter Zugabe wird die Eiskühlung entfernt und der Reaktionsansatz bei Raumtemperatur noch für 3 Stunden gerührt. Das Lösemittel wird entfernt und der entstandene Feststoff wird mit Wasser versetzt und abfiltriert. Der isolierte Feststoff wird nach dem Trocknen wiederum mit Thionylchlorid versetzt und man erhält nach der Aufarbeitung 13,9 g 4,4- Dimethyl-2- (2-methoxy-d4-phenyl) oxazolin. Ausbeute: 79% Schmelzpunkt: 71-74 °C berechnet:The production takes place in a manner known per se. 17 g of 2-amino-2-methyl-l-propanol are dissolved in dichloromethane and the ice-cooled solution is added dropwise to a solution of 14.75 g of 2-methoxy-3, 4, 5, 6-d4-benzoyl chloride in dichloromethane , After the addition has ended, the ice cooling is removed and the reaction mixture is stirred at room temperature for a further 3 hours. The solvent is removed and the resulting solid is mixed with water and filtered off. After drying, the isolated solid is again mixed with thionyl chloride and 13.9 g of 4,4-dimethyl-2- (2-methoxy-d4-phenyl) oxazoline are obtained after working up. Yield: 79% Melting point: 71-74 ° C calculated:
C: 68,87 %; H: 9,15 %; N: 6,69 % gefunden:C: 68.87%; H: 9.15%; N: 6.69% found:
C: 68,91 %; H: 9,13 %; N: 6,67 %C: 68.91%; H: 9.13%; N: 6.67%
XH-NMR (200 MHz, CDC13) : δ 3,68 (3H, s) ; 3,92 (2H, s) ; 1,26 (6H, s) . X H NMR (200 MHz, CDC1 3 ): δ 3.68 (3H, s); 3.92 (2H, s); 1.26 (6H, s).
Beispiel 3Example 3
Herstellung von 2- (dll-4' -Methylbiphenyl-2-yl) -4, 4- dimethyloxazolinPreparation of 2- (dll-4 '-methylbiphenyl-2-yl) -4, 4-dimethyloxazoline
Aus 10 g d7-4-Bromtoluol wird in an sich bekannter Weise durch Umsetzung mit Magnesium in wasserfreiem Tetrahydro- furan das d7-4-Methylphenyl-Grignardreagenz hergestellt. Dieses wird zu 5,3 g 4, 4-Dimethyl-2- (2-methoxy-d4- phenyl) oxazolin in wasserfreiem Tetrahydrofuran hinzugefügt und das Reaktionsgemisch bei Raumtemperatur für 2 Stunden gerührt. Nach der Aufarbeitung werden 5,7 g 2- (dll-4' -Methylbiphenyl-2-yl) -4, 4-dimethyloxazolin als farblose Flüssigkeit erhalten. Ausbeute: 81% berechnet: C: 78,21 %; H: 10,93 %; N: 5,07 % gefunden:10 g of d7-4-bromotoluene are reacted in a manner known per se by reaction with magnesium in anhydrous tetrahydro- furan produced the d7-4-methylphenyl-Grignard reagent. This is added to 5.3 g of 4,4-dimethyl-2- (2-methoxy-d4-phenyl) oxazoline in anhydrous tetrahydrofuran and the reaction mixture is stirred at room temperature for 2 hours. After working up, 5.7 g of 2- (dll-4 '-methylbiphenyl-2-yl) -4, 4-dimethyloxazoline are obtained as a colorless liquid. Yield: 81% calculated: C: 78.21%; H: 10.93%; N: 5.07% found:
C : 78 , 23 % ; H : 10 , 90 % ; N : 5 , 06 % XH-NMR ( 200 MHz , CDC13) : δ 3 , 93 ( 2H, s ) ; 1 , 25 ( 3H, s ) .C: 78.23%; H: 10, 90%; N: 5.06% X H NMR (200 MHz, CDC1 3 ): δ 3.93 (2H, s); 1.25 (3H, s).
Beispiel 4 :Example 4:
Herstellung von dl2-4' -Methyl-2-biphenylcarbonsäurePreparation of dl2-4 'methyl-2-biphenylcarboxylic acid
In Abwandlung der Literaturvorschrift werden 6 gIn a modification of the literature regulation, 6 g
2- (dll-4' -Methylbiphenyl-2-yl) -4, 4-dimethyloxazolin in Deuteriumchloridlösung für 15 Stunden zum Rückfluss erhitzt. Das Reaktionsprodukt setzt sich ölig an der Oberfläche ab und verfestigt sich nach Abkühlen der Reaktionslösung. Nach der Aufarbeitung werden 3,7 g dl2-4'- Methyl-2-biphenylcarbonsäure als farbloser Feststoff er- halten.2- (dll-4 '-methylbiphenyl-2-yl) -4, 4-dimethyloxazoline in deuterium chloride solution heated to reflux for 15 hours. The reaction product is oily on the surface and solidifies after the reaction solution has cooled. After working up, 3.7 g of dl2-4'-methyl-2-biphenylcarboxylic acid are obtained as a colorless solid.
Ausbeute: 76% Schmelzpunkt: 139-141 °C berechnet : C: 74, 96 %; H: 10,77 % gefunden:Yield: 76% Melting point: 139-141 ° C calculated: C: 74.96%; H: 10.77% found:
C: 74,98 %; H: 10,74 % 13C-NMR ( 75 MHz, CDC13) : δ 173 , 5 ; 142 , 9; 138 ; 136, 5; 133 , 2 (t) ; 130, 3 (t) ; 129, 8 (t) ; 129, 2 ; 127 , 6 (t) ; 127 (t) ; 127 , 6 (t) ; 19 , 4 ( sept) .C: 74.98%; H: 10.74% 13 C NMR (75 MHz, CDC1 3 ): δ 173.5; 142, 9; 138; 136, 5; 133, 2 (t); 130, 3 (t); 129.8 (t); 129, 2; 127, 6 (t); 127 (t); 127, 6 (t); 19, 4 (sept).
Beispiel 5Example 5
Herstellung von 4' -Trideuteromethyl-d8-biphenyl-2- carbonsäureamidPreparation of 4'-trideuteromethyl-d8-biphenyl-2-carboxamide
In an sich bekannter Weise werden 8 g dl2-4' -Methyl-2- biphenylcarbonsäure mit 10 Äquivalenten Thionylchlorid gemischt, für 2 Stunden zum Rückfluss erhitzt und anschließend das Thionylchlorid aus dem Reaktionsansatz entfernt. Das entstandene Säurechlorid wird zu einer Ammoniumhydroxidlösung gegeben und der entstandene Fest- stoff aufgearbeitet.In a manner known per se, 8 g of dl2-4 'methyl-2-biphenylcarboxylic acid are mixed with 10 equivalents of thionyl chloride, heated to reflux for 2 hours and then the thionyl chloride is removed from the reaction mixture. The acid chloride formed is added to an ammonium hydroxide solution and the solid formed is worked up.
Es werden 5,9 g 4' -Trideuteromethyl-d8-biphenyl-2- carbonsäurea id in Form eines weißen Feststoffs erhalten. Ausbeute: 74% Schmelzpunkt: 125-128 °C berechnet:5.9 g of 4'-trideuteromethyl-d8-biphenyl-2-carboxylic acid id are obtained in the form of a white solid. Yield: 74% Melting point: 125-128 ° C calculated:
C: 75,63 %; H: 10,87 %; N: 6,30 % gefunden:C: 75.63%; H: 10.87%; N: 6.30% found:
C: 75,64 %; H: 10,86 %; N: 6,27 %C: 75.64%; H: 10.86%; N: 6.27%
Beispiel 6Example 6
Herstellung von dll-4' -Methyl-2-biphenylnitrilPreparation of dll-4 'methyl-2-biphenylnitrile
6,5 g 4' -Trideuteromethyl-d8-biphenyl-2-carbonsäureamid werden in an sich bekannter Weise mit 10 Äquivalenten Thionylchlorid umgesetzt. Nach Entfernen des Thionylchlo- rids wird der Ansatz mit Hexan versetzt und man erhält 4,7 g dll-4' -Methyl-2-biphenylnitril als weißen Feststoff.6.5 g of 4'-trideuteromethyl-d8-biphenyl-2-carboxamide are reacted in a manner known per se with 10 equivalents of thionyl chloride. After the thionyl chloride has been removed, hexane is added to the mixture, and this is obtained 4.7 g of dll-4 'methyl-2-biphenyl nitrile as a white solid.
Ausbeute: 78% Schmelzpunkt: 43-46 °C. berechnet :Yield: 78% melting point: 43-46 ° C. calculated:
C: 82,30 %; H: 10,84 %; N: 6,86 % gefunden:C: 82.30%; H: 10.84%; N: 6.86% found:
C: 82,35 %; H: 10,82 %; N: 6,83 %C: 82.35%; H: 10.82%; N: 6.83%
13C-NMR (75 MHz, CDC13) : δ: 144,7; 138,1; 137,2; 133 (t) ; 132,1 (t); 129,9 (t) ; 128,5 (t) ; 127,8 (t) , 127,1 (t) , 13 C NMR (75 MHz, CDC1 3 ): δ: 144.7; 138.1; 137.2; 133 (t); 132.1 (t); 129.9 (t); 128.5 (t); 127.8 (t), 127.1 (t),
115,9; 19,5 (sept) .115.9; 19.5 (sept).
Beispiel 7 Herstellung von N-Trimethylstannyl-5- (dll-4' - methylbiphenyl-2-yl) tetrazolExample 7 Preparation of N-Trimethylstannyl-5- (dll-4 '- methylbiphenyl-2-yl) tetrazole
In an sich bekannter Weise werden 20,4 g dll-4' -Methyl-2- biphenylnitril mit 24,6 g Trimethylzinnazid in Toluol beiIn a manner known per se, 20.4 g of dll-4 '-methyl-2-biphenylnitrile with 24.6 g of trimethyltin azide in toluene
Raumtemperatur zur Reaktion gebracht. Das Reaktionsge- misch wird anschließend für 24 Stunden zum Rückfluss erhitzt und dann auf Raumtemperatur gekühlt. Es werden 32 gBrought to reaction at room temperature. The reaction mixture is then heated to reflux for 24 hours and then cooled to room temperature. There will be 32 g
Produkt als weißer Feststoff isoliert.Product isolated as a white solid.
Ausbeute: 75%Yield: 75%
Schmelzpunkt: 263 °C (Zersetzung) berechnet:Melting point: 263 ° C (decomposition) calculated:
C: 50,73 %; H: 8,27 %; N: 13,15 % gefunden:C: 50.73%; H: 8.27%; N: 13.15% found:
C: 50,71 %; H: 8,24 %; N: 13,18 %C: 50.71%; H: 8.24%; N: 13.18%
^•H-NMR (200 MHz, d6-DMSO) : δ 0,39 (9H) Beispiel 8^ • H-NMR (200 MHz, d6-DMSO): δ 0.39 (9H) Example 8
Herstellung von 5- (dll-4' -Methylbiphenyl-2-yl) -1D- tetrazolPreparation of 5- (dll-4 'methylbiphenyl-2-yl) -1D tetrazole
Unter Abwandlung der Literaturvorschrift wird das Produkt hergestellt, indem 33 g N-Trimethylstannyl-5- (dll-4' - methylbiphenyl-2-yl) tetrazol in einem Gemisch aus Toluol und Tetrahydrofuran gelöst werden und so lange trockenes Deuteriumchlorid bei Raumtemperatur durch die Lösung geblasen wird, bis eine klare Lösung entsteht. Das Produkt kristallisiert aus der Lösung aus und man erhält nachModifying the literature specification, the product is prepared by dissolving 33 g of N-trimethylstannyl-5- (dll-4 '- methylbiphenyl-2-yl) tetrazole in a mixture of toluene and tetrahydrofuran and so long dry deuterium chloride at room temperature through the solution is blown until a clear solution is obtained. The product crystallizes out of the solution and is obtained
Umkristallisation 16,8 g 5- (dll-4' -Methylbiphenyl-2-yl) - lD-tetrazol. Ausbeute: 82% Schmelzpunkt: 148-151 °C berechnet:Recrystallization 16.8 g of 5- (dll-4 '-methylbiphenyl-2-yl) - ID-tetrazole. Yield: 82% Melting point: 148-151 ° C calculated:
C: 68,14 %; H: 10,67 %; N: 21,19 % gefunden:C: 68.14%; H: 10.67%; N: 21.19% found:
C: 68,18 %; H: 10,65 %; N: 21,17 %C: 68.18%; H: 10.65%; N: 21.17%
Beispiel 9Example 9
Herstellung von N-Triphenylmethyl-5- (dll-4' - methylbiphenyl-2-yl) tetrazolPreparation of N-triphenylmethyl-5- (dll-4 '- methylbiphenyl-2-yl) tetrazole
In an sich bekannter Weise werden 19,8 g 5- (dll-4' - Methylbiphenyl-2-yl) -lD-tetrazol in Dichlormethan mit 25 g Tritylchlorid unter Zusatz von Triethylamin bei Raumtemperatur zur Reaktion gebracht. Das Reaktionsgemisch wird für 2 Stunden zum Rückfluss erhitzt und anschließend auf Raumtemperatur gekühlt. Es wird mit Wasser gewaschen, die organische Phase getrocknet und das Lösemittel im Vakuum entfernt. Man erhält nach Umkristallisation 28,8 g Produkt . Ausbeute: 75%In a manner known per se, 19.8 g of 5- (dll-4 '- methylbiphenyl-2-yl) ID-tetrazole in dichloromethane are reacted with 25 g of trityl chloride with the addition of triethylamine at room temperature. The reaction mixture is heated to reflux for 2 hours and then cooled to room temperature. It is washed with water, the organic phase is dried and the solvent is removed in vacuo. After recrystallization, 28.8 g of product are obtained. Yield: 75%
Schmelzpunkt: 162-166 °CMelting point: 162-166 ° C
^•H-NMR (200 MHz, CDC13) : δ 6,8-8,1 (15 H, m) berechnet:^ • H-NMR (200 MHz, CDC1 3 ): δ 6.8-8.1 (15 H, m) calculated:
C: 80,75 %; H: 8,17 %; N: 11,08 % gefunden:C: 80.75%; H: 8.17%; N: 11.08% found:
C: 80,78 %; H: 8,15 %; N: 11,07 %C: 80.78%; H: 8.15%; N: 11.07%
Beispiel 10Example 10
Herstellung von N-Triphenylmethyl-5- [dl0-4' - (brommethyl) biphenyl-2-yl] tetrazolPreparation of N-triphenylmethyl-5- [dl0-4 '- (bromomethyl) biphenyl-2-yl] tetrazole
Die Umsetzung von 31,8 g N-Triphenylmethyl-5- (dll-4' - methylbiphenyl-2-yl) tetrazol mit N-Bromsuccinimid erfolgt in an sich bekannter Weise, indem das Edukt in Tetrachlorkohlenstoff gelöst wird und bei Raumtemperatur mit 11,5 g N-Bromsuccinimid und 1,1 g Dibenzoylperoxid versetzt wird. Der Reaktionsansatz wird für 3 Stunden zum Sieden erhitzt, anschließend auf 40 °C gekühlt und filt- riert. Das Filtrat wird zur Trockne eingeengt, mit I- sopropylether versetzt und man erhält 27 g Produkt. Ausbeute: 74% Schmelzpunkt: 134-137 °C berechnet: C: 69,97 %; H: 6,73 %; N: 9,60 % gefunden:The reaction of 31.8 g of N-triphenylmethyl-5- (dll-4 '- methylbiphenyl-2-yl) tetrazole with N-bromosuccinimide is carried out in a manner known per se by dissolving the starting material in carbon tetrachloride and at room temperature with 11. 5 g of N-bromosuccinimide and 1.1 g of dibenzoyl peroxide are added. The reaction mixture is heated to boiling for 3 hours, then cooled to 40 ° C. and filtered. The filtrate is evaporated to dryness, mixed with isopropyl ether and 27 g of product are obtained. Yield: 74% Melting point: 134-137 ° C calculated: C: 69.97%; H: 6.73%; N: 9.60% found:
C : 69, 93 % ; H : 6, 75 % ; N : 9, 58 % XH-NMR (200 MHz, CDC13) : δ 6, 4-7 , 9 ( 15 H, ) C: 69.93%; H: 6.75%; N: 9.58% X H-NMR (200 MHz, CDC1 3 ): δ 6.4-7.9 (15 H,)
Claims
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| US7674796B2 (en) | 2002-12-20 | 2010-03-09 | Pfizer Inc. | Pyrimidine derivatives for the treatment of abnormal cell growth |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0291969A2 (en) * | 1987-05-22 | 1988-11-23 | E.I. Du Pont De Nemours And Company | Tetrazole intermediates to antihypertensive compounds |
-
2002
- 2002-02-07 DE DE10205336A patent/DE10205336A1/en not_active Withdrawn
-
2003
- 2003-02-06 WO PCT/DE2003/000367 patent/WO2003066565A1/en not_active Ceased
- 2003-02-06 AU AU2003227005A patent/AU2003227005A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0291969A2 (en) * | 1987-05-22 | 1988-11-23 | E.I. Du Pont De Nemours And Company | Tetrazole intermediates to antihypertensive compounds |
Non-Patent Citations (3)
| Title |
|---|
| CARINI D J ET AL: "NONPEPTIDE ANGIOTENSIN II RECEPTOR ANTAGONISTS: THE DISCOVERY OF A SERIES OF N-(BIPHENYLYLMETHYL)IMIDAZOLES AS POTENT, ORALLY ACTIVE ANTIHYPERTENSIVES", JOURNAL OF MEDICINAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY. WASHINGTON, US, vol. 34, no. 8, 1 August 1991 (1991-08-01), pages 2525 - 2547, XP000674205, ISSN: 0022-2623 * |
| DUNCIA, J.V. ET AL.: "Three synthetic routes to a sterically hindered tetrazole. A new one-step mild conversion of an amide into a tetrazole", J. ORG. CHEM., vol. 56, 1991, pages 2395 - 2400, XP002243982 * |
| MANTLO N B ET AL: "POTENT, ORALLY ACTIVE IMIDAZOU4,5-BPYRIDINE-BASED ANGIOTENSIN II RECEPTOR ANTAGONISTS", JOURNAL OF MEDICINAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY. WASHINGTON, US, vol. 34, no. 9, 1 September 1991 (1991-09-01), pages 2919 - 2922, XP000674665, ISSN: 0022-2623 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7674796B2 (en) | 2002-12-20 | 2010-03-09 | Pfizer Inc. | Pyrimidine derivatives for the treatment of abnormal cell growth |
| US7741336B2 (en) | 2002-12-20 | 2010-06-22 | Pfizer Inc. | Pyrimidine derivatives for the treatment of abnormal cell growth |
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