Se-phenyl 3α-acetoxy-5βH-selenocholanate   、                                                                                      
烯丙基硼酸频哪醇酯                                                                                                                                                              在
                                                                                                                                                                                 
偶氮二异丁腈   、                                                                                                  
三正丁基氢锡                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (3R,5R,8R,9R,10S,13R,17R)-17-(4(S)-Hydroxy-1-methyl-6-heptenyl)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-3-yl acetate   、                                                                                             (3R,5R,8R,9R,10S,13R,17R)-17-(4-(R)-Hydroxy-1-methyl-6-heptenyl)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-3-yl acetate