prop-2-enyl (2S)-2-[(3S,8R,9S,10R,13S,14S,17S)-3-[tert-butyl(dimethyl)silyl]oxy-17-hydroxy-10,13-dimethyl-16-oxo-2,3,4,7,8,9,11,12,14,15-decahydro-1H-cyclopenta[a]phenanthren-17-yl]propanoate                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate   、                                                                                                  cerium(III) chloride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以70%的产率得到prop-2-enyl (2S)-2-[(3S,8R,9S,10R,13S,14S,16S,17S)-3-[tert-butyl(dimethyl)silyl]oxy-16,17-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl]propanoate