Methyl 12-oxo-5β-cholanate 、
对甲苯磺酰肼 以
溶剂黄146 为溶剂,
反应 12.0h,
以78%的产率得到methyl (4R)-4-[(5S,8R,9S,10S,13R,14S,17R)-10,13-dimethyl-12-[(4-methylphenyl)sulfonylhydrazinylidene]-1,2,3,4,5,6,7,8,9,11,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl]pentanoate