(1S,2R)-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(13R,14S,17R)-17-Oxo-16,17-diphenyl-11,12,13,14,16,17-hexahydro-17λ5-phospha-cyclopenta[a]phenanthren-15-one