Process for the preparation of 4,6-disubstituted-tetrahydro-furo, thieno, pyrrolo and cyclopenta-[3,4][1,3]dioxoles
申请人:Inspire Pharmaceuticals, Inc.
公开号:US07741473B2
公开(公告)日:2010-06-22
The present invention is directed to a processes for the synthesis of trans isomer of 4,6-disubstituted-tetrahydro-furo, thieno, pyrrolo and cyclopenta-[3,4][1,3]dioxoles (Formula I). The process comprises the steps of: (a) obtaining a compound of Formula II, which is a mixture of cis and trans-diastereomers, and (b) chemically decomposing the compound of Formula II in a solution comprising a solvent and an acid that is a hydrogen donor or an electron pair acceptor, whereby the cis diastereomer is decomposed and the compound of Formula I is obtained. The compounds prepared by the present invention are useful in treating diseases or conditions associated with platelet aggregation and/or platelet activation.
本发明涉及一种合成4,6-二取代四氢呋喃、噻吩、吡咯和环戊-[3,4][1,3]二噁烷(式I)的反式异构体的过程。该过程包括以下步骤:(a)获得式II的化合物,该化合物是顺反异构体的混合物;(b)在包含溶剂和酸的溶液中化学分解式II的化合物,所述酸是氢供体或电子对受体,使顺式异构体分解并得到式I的化合物。本发明制备的化合物在治疗与血小板聚集和/或血小板激活有关的疾病或症状中有用。