Optically active torcetrapib was synthesized in seven steps from achiral precursors without the need for protecting groups, utilizing an enantioselective aza-Michael reaction to achieve asymmetry.
Optically active torcetrapib was synthesized in seven steps from achiral precursors without the need for protecting groups, utilizing an enantioselective aza-Michael reaction to achieve asymmetry.
Process for producing optically active beta-amino acid derivatives
申请人:Sodeoka Mikiko
公开号:US20060205968A1
公开(公告)日:2006-09-14
The present invention is to provide a method for producing the desired optically active β-amino acid derivatives of high optical purities in high yields, without requiring a step of deprotection. More particularly, the present invention relates to a method for producing an optically active β-amino acid derivative or a salt thereof represented by the formula (2):
which comprises reacting an α,β-unsaturated carboxylic acid derivative or a salt thereof represented by the formula (1):
with an amines or a salt thereof in the presence of a chiral catalyst and in the presence or absence of an acid.
PROCESS FOR PRODUCING OPTICALLY ACTIVE BETA-AMINO ACID DERIVATIVES
申请人:Takasago International Corporation
公开号:EP1656342A2
公开(公告)日:2006-05-17
US7351849B2
申请人:——
公开号:US7351849B2
公开(公告)日:2008-04-01
[EN] PROCESS FOR PRODUCING OPTICALLY ACTIIVE BETA-AMINO ACID DERIVATIVES<br/>[FR] PROCEDE POUR PRODUIRE DES DERIVES D'ACIDES AMINES BETA A ACTIVITE OPTIQUE
申请人:TAKASAGO PERFUMERY CO LTD
公开号:WO2005016866A2
公开(公告)日:2005-02-24
The present invention is to provide a method for producing the desired optically active β-amino acid derivatives of high optical purities in high yields, without requiring a step of deprotection. More particularly, the present invention relates to a method for producing an optically active β-amino acid derivative or a salt thereof represented by the formula (2): which comprises reacting an α,β-unsaturated carboxylic acid derivative or a salt thereof represented by the formula (1): with an amines or a salt thereof in the presence of a chiral catalyst and in the presence or absence of an acid.