A method is provided for preparing homochiral maleimide intermediates of the structure
wherein R⁷, R⁸ and R⁹ are as defined herein by reacting a homochiral amine of the structure
with maleic anhydride and a silylating agent. The maleimide intermediate is used in the enantioselective preparation of thromboxane A₂ receptor antagonists.
提供了一种制备同手性马来
酰亚胺中间体的方法,其结构为
其中 R⁷、R⁸ 和 R𠞙 如本文所定义,通过使结构同手性的胺反应
与
马来酸酐和
硅烷化剂反应。马来
酰亚胺中间体可用于对映体选择性制备血栓素 A₂ 受体拮抗剂。