申请人:Takasago International Corporation
公开号:US07351849B2
公开(公告)日:2008-04-01
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.
本发明提供了一种制备所需光学活性β-氨基酸衍生物的方法,其光学纯度高,收率高,不需要去保护步骤。具体而言,本发明涉及一种制备由公式(2)表示的光学活性β-氨基酸衍生物或其盐的方法,该方法包括在手性催化剂的存在下,在酸的存在或缺失下,将由公式(1)表示的α,β-不饱和羧酸衍生物或其盐与胺或其盐反应。