Development and Scale-up of an Organocatalytic Enantioselective Process to Manufacture (S)-Pregabalin
摘要:
Herein is reported the development of a new process to manufacture (S)-pregabalin. The method comprises six steps, run under the catalysis of a recyclable polymer bound phase transfer catalyst, and afforded (S)-pregabalin in overall 54% yield, starting from building blocks acetylacetone, isovaleraldehyde, and nitromethane.
[EN] METHOD FOR THE PREPARATION OF BETA-SUBSTITUTED GAMMA-AMINO CARBOXYLIC ACIDS [FR] PROCÉDÉ POUR LA PRÉPARATION D'ACIDES GAMMA-AMINOCARBOXYLIQUES SUBSTITUÉS EN POSITION BÊTA
[EN] PREPARATION OF ENANTIOMERICALLY ENRICHED GAMMA-NITRO ACID AND PREGABALIN<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDE GAMMA-NITRO ENRICHI EN ÉNANTIOMÈRE ET DE PRÉGABALINE
申请人:MATRIX LAB LTD
公开号:WO2010004577A1
公开(公告)日:2010-01-14
The present invention provides a novel process for the preparation of enantiomerically enriched γ-nitro acid used an intermediate for the preparation of Pregabalin and further conversion to Pregabalin.
PROCESS FOR THE STEREOSELECTIVE ENZYMATIC HYDROLYSIS OF 5-METHYL-3-NITROMETHYL-HEXANOIC ACID ESTER
申请人:Albert Martin
公开号:US20110165636A1
公开(公告)日:2011-07-07
The present invention relates to processes for the preparation of 5-methyl-3-nitromethyl-hexanoic acid ester and its salts. Also disclosed are processes for the preparation of 5-methyl-3-nitromethyl-hexanoic acid salt and a process for the preparation of 3-(aminomethyl)-5-methylhexanoic acid. (S)-5-Methyl-3-nitromethyl-hexanoic acid or (R)-5-methyl-3-nitromethyl-hexanoic acid in enantioenriched form or enantiopure form as well as salts thereof, (S)-5-methyl-3-nitromethyl-hexanoic acid ester or (R)-5-methyl-3-nitromethyl-hexanoic acid ester in enantioenriched form or enantiopure form and a compound, namely Formula (XIII), in racemic form, enantioenriched form or enantiopure form are also disclosed.
Process for the stereoselective enzymatic hydrolysis of 5-methyl-3-nitromethyl-hexanoic acid ester
申请人:Albert Martin
公开号:US08546112B2
公开(公告)日:2013-10-01
The present invention relates to processes for the preparation of 5-methyl-3-nitromethyl-hexanoic acid ester and its salts. Also disclosed are processes for the preparation of 5-methyl-3-nitromethyl-hexanoic acid salt and a process for the preparation of 3-(aminomethyl)-5-methylhexanoic acid. (S)-5-Methyl-3-nitromethyl-hexanoic acid or (R)-5-methyl-3-nitromethyl-hexanoic acid in enantioenriched form or enantiopure form as well as salts thereof, (S)-5-methyl-3-nitromethyl-hexanoic acid ester or (R)-5-methyl-3-nitromethyl-hexanoic acid ester in enantioenriched form or enantiopure form and a compound, namely Formula (XIII), in racemic form, enantioenriched form or enantiopure form are also disclosed.
[EN] PROCESS FOR THE STEREOSELECTIVE ENZYMATIC HYDROLYSIS OF 5-METHYL-3-NITROMETHYL-HEXANOIC ACID ESTER<br/>[FR] PROCÉDÉ POUR L'HYDROLYSE ENZYMATIQUE STÉRÉOSÉLECTIVE D'UN ESTER D'ACIDE 5-MÉTHYL-3-NITROMÉTHYL-HEXANOÏQUE
申请人:SANDOZ AG
公开号:WO2009141362A2
公开(公告)日:2009-11-26
The present invention relates to processes for the preparation of 5-methyl-3-nitromethyl-hexanoic acid ester and its salts. Also disclosed are processes for the preparation of 5-methyl-3-nitromethyl-hexanoic acid salt and a process for the preparation of 3-(aminomethyl)-5- methylhexanoic acid. (S)-5-Methyl-3-nitromethyl-hexanoic acid or (R)-5-methyl-3-nitromethyl-hexanoic acid in enantioenriched form or enantiopure form as well as salts thereof, (S)-5-methyl-3-nitromethyl-hexanoic acid ester or (R)-5-methyl-3-nitromethyl-hexanoic acid ester in enantioenriched form or enantiopure form and a compound, namely Formula (XIII), in racemic form, enantioenriched form or enantiopure form are also disclosed.