(2R,3S,5S)-2-[(S)-1-((3S,6aS,6bR,9S,10R,10aS,11aS,11bR)-3-Hydroxy-10,11b-dimethyl-2,3,4,6,6a,6b,7,8,9,10,10a,11,11a,11b-tetradecahydro-1H-benzo[a]fluoren-9-yl)-ethyl]-5-methyl-piperidin-3-ol 在
亚硝酸丁酯 、
sodium methylate 作用下,
以
甲醇 为溶剂,
生成
(6aS,6bR,9R,10R,10aS,11aS,11bR)-9-Acetyl-10,11b-dimethyl-1,2,5,6,6a,6b,7,8,9,10,10a,11,11a,11b-tetradecahydro-benzo[a]fluoren-3-one