(8S,11R,13S,14S)-13-Methyl-11-vinyl-1,6,7,8,11,12,13,14,15,16-decahydro-2H-cyclopenta[a]phenanthrene-3,17-dione 在
盐酸 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以92%的产率得到(8S,13S,14S)-11-Eth-(E)-ylidene-13-methyl-1,6,7,8,11,12,13,14,15,16-decahydro-2H-cyclopenta[a]phenanthrene-3,17-dione