Acetic acid (5S,8R,9S,10S,12S,13R,14S,17R)-10,13-dimethyl-17-((R)-1-methyl-3-phenyl-propyl)-hexadecahydro-cyclopenta[a]phenanthren-12-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
红铝                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
苯                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
(5S,8R,9S,10S,12S,13R,14S,17R)-10,13-Dimethyl-17-((R)-1-methyl-3-phenyl-propyl)-hexadecahydro-cyclopenta[a]phenanthren-12-ol