{(3S,3aS,5aS,6S,9aR,9bS)-3-Acetoxy-7-[1-methoxycarbonyl-meth-(Z)-ylidene]-3a,6-dimethyl-dodecahydro-cyclopenta[a]naphthalen-6-yl}-acetic acid methyl ester 在
氢氧化钾 、
臭氧 作用下,
以
甲醇 、
乙酸乙酯 为溶剂,
生成
((3S,3aS,5aS,6S,9aS,9bS)-3-Hydroxy-3a,6-dimethyl-7-oxo-dodecahydro-cyclopenta[a]naphthalen-6-yl)-acetic acid