Lipases A and B from Candida antarctica in the enantioselective acylation of ethyl 3-heteroaryl-3-hydroxypropanoates: aspects on the preparation and enantiopreference
摘要:
The preparative scale kinetic resolution of racemic ethyl 2- and 3-furyl- and 2- and 3-thienyl-3-hydroxypropanoates has been performed by Candida antarctica lipases A and B with vinyl esters. A study based on the present work together with the literature has been carried out in terms of lipase enantiopreference and substrate structure. We also discuss the excellent behavior of the lipase A in O-acylations of secondary alcohols with respect to enantiopreference. (C) 2011 Elsevier Ltd. All rights reserved.
The lipase-catalyzed kinetic resolution of a series of aromatic β-hydroxyesters in organic media has been investigated. Decanoic acid and its esters were successfully used as acyl donors for selective O-acylation. The regio- and enantioselective enzymatic hydrolysis of the decanoate moiety of the diesters was also investigated. The effects of water, reaction temperature, and solvent type, and also
Process for preparing 3-heteroaryl-3-hydroxypropanoic acid derivatives
申请人:Berendes Frank
公开号:US20060264641A1
公开(公告)日:2006-11-23
The invention relates to a process for preparing enantiomer-enriched 3-heteroaryl-3-hydroxypropanoic acid derivatives and 3-heteroaryl-1-aminopropan-3-ols, and to their use.
Verfahren zur Herstellung von 3-Heteroaryl-3-hydroxy-propansäurederivaten durch enantionselektive mikrobielle Reduktion
申请人:Bayer Chemicals AG
公开号:EP1405917A2
公开(公告)日:2004-04-07
Die Erfindung betrifft ein Verfahren zur Herstellung von enantiomerenangereicherten 3-Heteroaryl-3-hydroxy-propansäurederivaten und 3-Heteroaryl-1-amino-propan-3-olen sowie deren Verwendung.
An unprecedented Cr-catalyzed asymmetric Reformatsky reaction of aldehydes with α-chlorinated esters and amides has been developed, providing modular access to valuable chiral β-hydroxy carbonyl compounds.