1-[(8R,9S,10R,13S,14S,16R,17S)-16-ethyl-13-methyl-3-pyrrolidin-1-yl-1,2,7,8,9,10,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl]ethanone 在
盐酸 、
溴 作用下,
以
乙醇 为溶剂,
以0.88 g的产率得到(8R,9S,10R,13S,14S,16R,17S)-17-(2-Bromo-acetyl)-16-ethyl-13-methyl-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-3-one