methyl (Z)-2-acetamido-3-[(8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,7,8,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-yl]prop-2-enoate   、                                                                                      
碘甲烷                                                                                                                                                              在
                                                                                                                                                                                 
sodium hydroxide   、                                                                                                  
四丁基氯化铵                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以65%的产率得到(Z)-2-(Acetyl-methyl-amino)-3-[(8S,9S,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]-acrylic acid methyl ester