(5R,6S,8R,9S,10R,13S,14S)-6-Hydroxy-4,4,13-trimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-one 在
吡啶 、
亚硝酰氯 作用下,
以
苯 为溶剂,
生成 (5aR,5bS,7aS,10aS,10bR,12S,12aR,12bR)-7a,12b-Dimethyl-4,5,5a,5b,6,7,7a,8,9,10,10a,10b,11,12,12a,12b-hexadecahydro-3-oxa-2-aza-dicyclopenta[a,i]phenathrene-3a,12-diol