(1R,2S)-2-((S)-Benzyl-phenyl-phosphinoyl)-1,2,3,4-tetrahydro-phenanthrene-1-carboxylic acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以80%的产率得到(13S,14R,17R)-17-Oxo-16,17-diphenyl-11,12,13,14,16,17-hexahydro-17λ5-phospha-cyclopenta[a]phenanthren-15-one