4-[((5S,8R,9S,10S,13S,14S,17S)-17-Hydroxy-10,13-dimethyl-3-oxo-hexadecahydro-cyclopenta[a]phenanthren-17-ylmethyl)-carbamoyl]-butyric acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 
氢氧化钾                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 36.0h,
                                                                                                                以83%的产率得到4-[((5S,8R,9S,10S,13S,14S,17S)-17-Hydroxy-10,13-dimethyl-3-oxo-hexadecahydro-cyclopenta[a]phenanthren-17-ylmethyl)-carbamoyl]-butyric acid