(1R,3aS,3bR,10aR,10bS,12aS)-1-Ethynyl-10a,12a-dimethyl-1,2,3,3a,3b,4,5,8,10,10a,10b,11,12,12a-tetradecahydro-7,8-diaza-dicyclopenta[a,h]phenanthren-1-ol 、
甲基磺酰氯 在
吡啶 作用下,
反应 1.0h,
以31%的产率得到(1R,3aS,3bR,10aR,10bS,12aS)-1-Ethynyl-8-methanesulfonyl-10a,12a-dimethyl-1,2,3,3a,3b,4,5,8,10,10a,10b,11,12,12a-tetradecahydro-7,8-diaza-dicyclopenta[a,h]phenanthren-1-ol