(3β,5α,20S)-3-(benzoyloxy)-20-(hydroxymethyl)pregn-8(14)-en-15-one                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
氯仿                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                生成                                                 (3S,5S,9R,10S,13R,17R)-3-Hydroxy-17-((S)-2-hydroxy-1-methyl-ethyl)-10,13-dimethyl-1,2,3,4,5,6,7,9,10,11,12,13,16,17-tetradecahydro-cyclopenta[a]phenanthren-15-one