申请人:CAMBREX CHARLES CITY INC
公开号:WO2019073247A1
公开(公告)日:2019-04-18
There is provided a novel process for the preparation of a compound of formula I, wherein R1, R2,W, Z and II are as described in the description, by demethylation of a corresponding O-methyl derivative with a borohydride-based reagent. This process may be used in the preparation of buprenorphine.
提供了一种新的制备I式化合物的方法,其中R1、R2、W、Z和II如描述中所述,通过使用硼氢化物为基础试剂对相应的O-甲基衍生物进行脱甲基化反应。该方法可用于制备丁丙诺啡。