The present invention provides an industrially advantageous process for the preparation of pure allyl protected keto derivative of formula I, an intermediate of ezetimibe. by using a novel O-allyl amide derivative of formula II. wherein R is methyl or ethyl
本发明提供了一种工业上具有优势的工艺,用于制备式I的纯烯丙基保护的酮衍
生物,即依泽替米的中间体,通过使用一种新型的式II的O-烯丙基酰胺衍
生物,其中R是甲基或乙基。