Acetic acid (3R,5S,8R,9S,10S,13S,14S)-17-[1,5-dimethyl-hex-(E)-ylidene]-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
N-溴代丁二酰亚胺(NBS)   、                                                                                                  
四氧化锇   、                                                                                                  
过氧化氢苯甲酰                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氯化碳                                                                                  为溶剂,
                                                                                                                                                    反应 9.0h,
                                                                                                                生成                                                 Acetic acid (3R,5S,8R,9S,10S,13S,14S)-17-((Z)-1,5-dimethyl-hex-1-enyl)-16,17-dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester