The invention relates to a process for preparing a compound of general formula (la): wherein R2, Y, R4and R5are as defined herein, wherein the epoxidation is conducted using an oxidant and methyltrioxorhenium as a catalyst (MeReO3). The invention also relates to certain compounds per se.The compounds are intermediates in the synthesis of synthetic bile acids.
该发明涉及一种制备一般式化合物(la)的过程:其中R2、Y、R4和R5如本文所定义,在此处使用氧化剂和甲基三
氧化铼作为催化剂(MeReO3)进行环氧化。该发明还涉及某些化合物本身。这些化合物是合成
胆酸的中间体。