PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY ENRICHED BETA-AMINO ALCOLHOLS STARTING FROM GLYCINE AND AN ALDEHYDE IN THE PRESENCE OF A THREONINE ALDOLASE AND A DECARBOXYLASE
Aminoalkohole, 2. Mitt.: Ein Verfahren zur Herstellung enantiomerenreiner pharmakologisch aktiver ?-Aminoalkohole
摘要:
A synthesis of beta-aminoalcohols is described starting from racemic or enantiomerically pure alpha-hydroxynitriles which were O-protected using enantiomerically pure acetal type protective groups. Reduction with lithium aluminium hydride yielded O-protected beta-aminoalcohols. Whenever diastereomeric O-protected cyanohydrins could not be separated, the mixture was reduced and the resulting O-protected aminoalcohols were separated. Removal of the protective group using hydrogen chloride and methanol yielded enantiomerically pure beta-aminoalcohols or their corresponding hydrochlorides.
Efficient asymmetric reduction of acyl cyanides with B-3-pinanyl 9-BBN (Alpine-borane)
作者:M. Mark Midland、Penny E. Lee
DOI:10.1021/jo00217a053
日期:1985.8
PROCESS FOR THE PREPARATION OF ENANTIOMERI CALLY ENRICHED BETA-AMINO ALCOHOLS STARTING FROM GLYCINE AND AN ALDEHYDE IN THE PRESENCE OF A THREONINE ALDOLASE AND A DECARBOXYLASE
申请人:DSM IP Assets B.V.
公开号:EP2004836A1
公开(公告)日:2008-12-24
[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERI CALLY ENRICHED BETA-AMINO ALCOHOLS STARTING FROM GLYCINE AND AN ALDEHYDE IN THE PRESENCE OF A THREONINE ALDOLASE AND A DECARBOXYLASE<br/>[FR] PROCEDE DE PREPARATION DE BETA-AMINOALCOOLS ENRICHIS SUR LE PLAN ENANTIOMERIQUE A PARTIR DE GLYCINE ET D'UN ALDEHYDE, EN PRESENCE D'UNE THREONINE ALDOLASE ET D'UNE DECARBOXYLASE
申请人:DSM IP ASSETS BV
公开号:WO2007118682A1
公开(公告)日:2007-10-25
[EN] The invention relates to a process for the preparation of an enantiomerically enriched ß-amino alcohol, wherein glycine or a glycine salt and an aldehyde are reacted in the presence of a threonine aldolase and a decarboxylase to form the corresponding enantiomerically enriched ß-aminoalcohol, and wherein at least either the threonine aldolase or the decarboxylase is ß-selective. In a preferred embodiment of the invention at least either the threonine aldolase or the decarboxylase is enantioselective. [FR] La présente invention concerne un procédé de préparation d'un ß-aminoalcool enrichi sur le plan énantiomérique, ledit procédé impliquant de faire réagir de la glycine ou un sel de glycine avec un aldéhyde, en présence d'une thréonine aldolase et d'une décarboxylase, de manière à former le ß-aminoalcool correspondant enrichi sur le plan énantiomérique, au moins ladite thréonine aldolase ou décarboxylase étant ß-sélective. Sous l'un des modes de réalisation de l'invention préféré, au moins la thréonine aldolase ou la décarboxylase est énantiosélective.