Acetic acid (6R,7S,8R,9S,10R,13S,14S,17R)-17-acetyl-10,13-dimethyl-16-methylene-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-20-oxa-cyclopropa[6,7]cyclopenta[a]phenanthren-17-yl ester 在
sodium azide 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
生成
Acetic acid (6S,7S,8R,9S,10R,13S,14S,17R)-17-acetyl-6-azido-7-hydroxy-10,13-dimethyl-16-methylene-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester