(4S,5R,6S,7R,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-10,13-dimethyl-octadecahydro-cyclopropa[6,7]cyclopenta[a]phenanthren-4-ol                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  
sodium acetate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
溶剂黄146                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 Acetic acid (7S,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-7-ylmethyl ester