(1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bS)-9-Acetoxy-3a-acetoxymethyl-5a,5b,8,8,11a-pentamethyl-13-oxo-icosahydro-cyclopenta[a]chrysene-1-carboxylic acid methyl ester 在
氢氧化钾 作用下,
以
乙醇 、
苯 为溶剂,
生成 (1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bS)-9-Hydroxy-3a-hydroxymethyl-5a,5b,8,8,11a-pentamethyl-13-oxo-icosahydro-cyclopenta[a]chrysene-1-carboxylic acid methyl ester