申请人:Zhejiang Hisun Pharmaceutical Co., Ltd.
公开号:EP3444253A1
公开(公告)日:2019-02-20
Disclosed are a method for preparing a benzodioxole derivative (AD-35) shown by Formula (I) and an intermediate thereof. The method of the present invention involves: using piperic acid as a raw material; and performing bromination, esterification, cyanidation, cyclopropane lactamization, amide nitrogen alkylation, deprotection, piperidine nitrogen alkylation and salification to obtain the compound of Formula (I). The method has cheap and easily available start raw materials, short synthesis routes and simple operation, and is suitable for industrial production.
本发明公开了一种制备式(I)所示苯并二恶茂衍生物(AD-35)及其中间体的方法。本发明的方法包括:以哌啶酸为原料,进行溴化、酯化、氰化、环丙烷内酰胺化、酰胺氮烷基化、脱保护、哌啶氮烷基化和盐析,得到式(I)化合物。该方法起始原料便宜易得,合成路线短,操作简单,适合工业化生产。