(20S,25R)-26-acetylamino-6-oxo-5α-furostane-2β,3β-diol diacetate 在
氢溴酸 、
溴 作用下,
以
溶剂黄146 为溶剂,
反应 3.5h,
生成 Acetic acid (2R,3S,4aR,4bS,6aS,6bR,7S,8R,9aS,10aS,10bS,12aR)-2-acetoxy-8-((R)-4-acetylamino-3-methyl-butyl)-12a-bromo-4a,6a,7-trimethyl-12-oxo-octadecahydro-9-oxa-pentaleno[2,1-a]phenanthren-3-yl ester 、
(20S,22R,25R)-26-acetylamino-7α-bromo-6-oxo-5α-furostane-2β,3β-diol diacetate