Chemo-enzymatic synthesis of all isomeric 3-phenylserines and -isoserines
作者:H. Hönig、P. Seufer-Wasserthal、H. Weber
DOI:10.1016/s0040-4020(01)90519-8
日期:1990.1
prepared from cinnamic acid derivatives or viaaldolcondensations of benzaldehyde and suitable enolates in few steps. These racemates were resolved with lipases from Candida cylindracea (CC) and Pseudomonas fluorescens (P) and the obtained products were hydrogenated to 3-phenylserines and -isoserines. The influence of the acyl group in the enzymatic resolution of erythro-3-azido-2-acyloxy-3-phenylpropionic
Resolution of 2-hydroxy-3-amino-3-phenylpropionamide and its conversion
申请人:Chiragene, Inc.
公开号:US06025516A1
公开(公告)日:2000-02-15
The present invention provides an efficient route to the C-13 side chain of the anti-cancer drug paclitaxel (TAXOL) and its analogs. The process includes the resolution of racemic erythro 2-hydroxy-3-amino-3-phenylpropionamide by diastereomeric crystallization and its conversion via various intermediates to the threo-ethylester and threo-methylester isomers.
PROCESS FOR THE PREPARATION OF (2R,3S)-3-PHENYLISOSERINE METHYL ESTER ACETATE SALT
申请人:Ciceri Daniele
公开号:US20100168460A1
公开(公告)日:2010-07-01
A process for the enantioselective preparation of (2R,3S)-3-phenylisoserine methyl ester acetate salt of formula (I) which is an useful building block for the synthesis of taxane derivatives. The process involves the resolution of racemic threo-phenylisoserine amide and its conversion into (I).