申请人:——
公开号:US20030166963A1
公开(公告)日:2003-09-04
One aspect of the present invention relates to a method for the kinetic resolution of racemic and diastereomeric mixtures of chiral compounds. The critical elements of the method are: a non-racemic chiral tertiary-amine-containing catalyst; a racemic or diastereomeric mixture of a chiral substrate, e.g., a cyclic carbonate or cyclic carbamate; and a nucleophile, e.g., an alcohol, amine or thiol. A preferred embodiment of the present invention relates to a method for achieving the kinetic resolution of racemic and diastereomeric mixtures of derivatives of &agr;- and &bgr;-amino, hydroxy, and thio carboxylic acids. In certain embodiments, the methods of the present invention achieve dynamic kinetic resolution of a racemic or diastereomeric mixture of a substrate, i.e., a kinetic resolution wherein the yield of the resolved enantiomer or diastereomer, respectively, exceeds the amount present in the original mixture due to the in situ equilibration of the enantiomers or diastereomers under the reaction conditions prior to the resolution step.
本发明的一个方面涉及手性化合物外消旋体和非对映异构体混合物的动力学解析方法。该方法的关键要素包括:非外消旋手性含叔胺催化剂;手性底物的外消旋或非对映混合物,例如环状碳酸盐或环状氨基甲酸酯;以及亲核剂,例如醇、胺或硫醇。本发明的一个优选实施方案涉及一种实现&agr;-和&bgr;-氨基、羟基和硫代羧酸衍生物的外消旋和非对映混合物的动力学解析的方法。在某些实施方案中,本发明的方法实现了底物的外消旋混合物或非对映混合物的动态动力学解析,即动力学解析,解析出的对映体或非对映异构体的产率分别超过原始混合物中的产率,这是由于对映体或非对映异构体在解析步骤之前的反应条件下进行了原位平衡。