[EN] (2S,4S)-4-FLUORO-1-[4-FLUORO-BETA-(4-FLUOROPHENYL)-L-PHENYLALANYL]-2-PYRROLIDINECARBONITRILE P-TOLUENESULFONIC ACID SALT AND ANHYDROUS CRYSTALLINE FORMS THEREOF [FR] SEL D'ACIDE (2S,4S)-4-FLUORO-1-[4-FLUORO-BETA-(4-FLUOROPHENYL)-1-PHENYLALANYL]-2-PYRROLIDINECARBONITRILE P-TOLUENESULFONIQUE, ET CERTAINES DE SES FORMES CRRISTALLINES ANHYDRES
[EN] (2S,4S)-4-FLUORO-1-[4-FLUORO-BETA-(4-FLUOROPHENYL)-L-PHENYLALANYL]-2-PYRROLIDINECARBONITRILE P-TOLUENESULFONIC ACID SALT AND ANHYDROUS CRYSTALLINE FORMS THEREOF [FR] SEL D'ACIDE (2S,4S)-4-FLUORO-1-[4-FLUORO-BETA-(4-FLUOROPHENYL)-1-PHENYLALANYL]-2-PYRROLIDINECARBONITRILE P-TOLUENESULFONIQUE, ET CERTAINES DE SES FORMES CRRISTALLINES ANHYDRES
Production method of optically active diphenylalanine compounds
申请人:Ajinomoto Co., Inc.
公开号:EP1724253A3
公开(公告)日:2009-11-04
The present invention provides a production method including reacting a diphenylmethylene halide compound represented by the following formula (1) with a malonic acid diester compound represented by the following formula (2) in an organic solvent selected from N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone and N,N-dimethylformamide, in the presence of a base selected from an alkali metal hydride and an alkali metal t-butoxide to give a diester compound represented by the following formula (3), and then subjecting the diester compound to hydrolysis and decarboxylation to give a diphenylalanine compound represented by the following formula (4).
According to the present invention, diphenylalanine compound (4) can be obtained industrially advantageously in a high yield.
wherein each symbol is as defined in the specification.
Production method of optically active dephenylalanine compounds
申请人:Hamada Takayuki
公开号:US20070032658A1
公开(公告)日:2007-02-08
Optically active diphenylalanine compounds may be conveniently prepared in a good yield by reacting a diphenylalanine compound represented by formula (1) with an optically active amine compound represented by formula (2) in the presence of an organic solvent to give a diastereomeric salt represented by formula (5) and then treating the diastereomeric salt under acidic conditions to give an optically active diphenylalanine compound represented by formula (3):
wherein each symbol is as defined in the specification.
Production method of diphenylalanine - NI(II) complex
申请人:Ajinomoto Co., Inc.
公开号:EP1918275A1
公开(公告)日:2008-05-07
The present invention relates to a production method of a compound represented by the formula (3), which includes reacting a compound represented by the formula (2) with a diphenylmethyl halide compound represented by the formula (1) in the presence of alkali metal alkoxide. According to the method of the present invention, compound (3) can be produced at a high purity and in a high yield.
wherein each symbol is as defined in the specification, *1 and *2 each show an asymmetric carbon atom, and the configuration of the asymmetric carbon atom of *1 and *2 is (S,S) or (R,R).
Fluoropyrrolidines as dipeptidyl peptidase inhibitors
申请人:——
公开号:US20040171848A1
公开(公告)日:2004-09-02
The present invention relates to novel compounds, their use for inhibiting serine proteases, such as dipeptidyl peptidases, such as dipeptidyl peptidase IV (DPP-IV) and to methods for their production and their therapeutic utility.
(2S,4s)-4-fluoro-1-[4-fluoro-beta-(4-fluorophenyl)-I-phenylalanyl]-2-pyrrolidinecarbonitrile p-toluenesulfonic acid salt and anhydrous crystalline forms thereof
申请人:Igo H David
公开号:US20070066677A1
公开(公告)日:2007-03-22
The present invention includes anhydrous crystalline forms of (2S,4S)-4-fluoro-1-[4-fluoro-β-(4-fluorophenyl)-L-phenylalanyl]-2-pyrrolidinecarbonitrile p-toluenesulfonic acid salt.