(3beta,5alpha,25R)-26-Bromo-16,22-dioxocholestan-3-yl acetate 在
氯化铵 、
锌 作用下,
以
乙醇 为溶剂,
以93%的产率得到[(3S,5S,8R,9S,10S,13S,14S,17R)-10,13-dimethyl-17-[(2S)-6-methyl-3-oxoheptan-2-yl]-16-oxo-1,2,3,4,5,6,7,8,9,11,12,14,15,17-tetradecahydrocyclopenta[a]phenanthren-3-yl] acetate