申请人:Zhejiang Jiuzhou Pharmaceutical Co., Ltd.
公开号:EP2801567A1
公开(公告)日:2014-11-12
Disclosed are a silodosin intermediate and a preparation method thereof. The silodosin intermediate has the structure shown by the formula (A). X is hydrogen or bromide and R1 is hydrogen. The formyl group may be a group having the structure shown by the formula I. R7 is an carboxyl-protecting group, and R2 is 3-hydroxypropyl or a group having the structure shown by the formula II. W is a hydroxyl-protecting group. A compound of the formula (A) according to the present invention may further be used for preparing a compound having the structure shown by the formula (D). By means of the intermediate and the preparation method therefor provided by the present invention, high-purity optically pure silodosin can be obtained, and the optical purity is above 99%.
本发明公开了一种西洛多辛中间体及其制备方法。硅酮素中间体具有式(A)所示的结构。X为氢或溴,R1为氢。甲酰基可以是具有式 I 所示结构的基团。R7 是羧基保护基团,R2 是 3-羟基丙基或具有式 II 所示结构的基团。W 是羟基保护基团。根据本发明的式 (A) 化合物可进一步用于制备具有式 (D) 所示结构的化合物。通过本发明提供的中间体及其制备方法,可获得高纯度光学纯硅藻糖苷,光学纯度高于 99%。