Acetic acid (3S,3aS,5aS,11aR,11bS)-8-acetoxy-3a,6-dimethyl-2,3,3a,4,5,5a,6,11,11a,11b-decahydro-1H-cyclopenta[a]anthracen-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
氢氧化钾                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (3S,3aS,5aS,11aR,11bS)-3-Hydroxy-3a,6-dimethyl-1,2,3,3a,4,5,5a,6,9,10,10a,11,11a,11b-tetradecahydro-cyclopenta[a]anthracen-8-one