[EN] PROCESS FOR THE PREPARATION OF PERINDOPRIL<br/>[FR] PROCEDE POUR LA PREPARATION DE PERINDOPRIL
申请人:NEOPHARMA LTD
公开号:WO2005100317A1
公开(公告)日:2005-10-27
A process for preparing perindopril (III) or a pharmaceutically acceptable salt thereof, which process comprises a substituted benzyl ester of (2S,3aS,7aS)-octahydroindole-2-carboxylic acid (I) with N-[(S)-carbethoxybutyl]-(S)-alanine (II) where R represents a halo, C1-4 alkoxy or nitro substituent.
The stereoselective synthesis of N-[(s) 1 - carbethoxybutyl)] (s) alanine and of (2S, 3aS, 7aS) 2-t.butoxycarbonyl perhydroindole are described. Their coupling produces the title compound
Asymmetric Synthesis of
<i>N</i>
‐Substituted α‐Amino Esters from α‐Ketoesters via Imine Reductase‐Catalyzed Reductive Amination
作者:Peiyuan Yao、James R. Marshall、Zefei Xu、Jesmine Lim、Simon J. Charnock、Dunming Zhu、Nicholas J. Turner
DOI:10.1002/anie.202016589
日期:2021.4.12
N‐Substituted α‐amino esters are widely used as chiral intermediates in a range of pharmaceuticals. Here we report the enantioselective biocatalyic synthesis of N‐substituted α‐amino esters through the direct reductive coupling of α‐ketoesters and amines employing sequence diverse metagenomic imine reductases (IREDs). Both enantiomers of N‐substituted α‐amino esters were obtained with high conversion