Acetic acid (2S,4aS,4bS,6aS,8R,10aS,10bS,12aR)-8-(2,2-diphenyl-vinyl)-8,10a,12a-trimethyl-octadecahydro-chrysen-2-yl ester 在
chromium(VI) oxide 作用下,
以
溶剂黄146 、
苯 为溶剂,
生成
(2R,4aS,4bS,6aR,8S,10aS,10bS,12aS)-8-Acetoxy-2,4a,6a-trimethyl-octadecahydro-chrysene-2-carboxylic acid