Acetic acid (1S,2S,4aS,7S,10aR)-1-acetoxymethyl-7-(2-hydroxy-ethyl)-1,4a,7-trimethyl-1,2,3,4,4a,5,6,7,8,9,10,10a-dodecahydro-phenanthren-2-yl ester                                                                                                                                                              在
                                                                                                                                                                                 jones' reagent                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
丙酮                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以78%的产率得到((2S,4bS,7S,8S,8aR)-7-Acetoxy-8-acetoxymethyl-2,4b,8-trimethyl-1,2,3,4,4b,5,6,7,8,8a,9,10-dodecahydro-phenanthren-2-yl)-acetic acid