甲基磺酰氯 、
(8R,9S,13S,14S,15S,16R,17R)-16-Azido-3-methoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-15,17-diol 在
吡啶 作用下,
生成 Methanesulfonic acid (8R,9S,13S,14S,15S,16R,17R)-16-azido-15-methanesulfonyloxy-3-methoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl ester