[(8R,9S,13S,14S,17S)-13-methyl-3-phenylmethoxy-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] 4,4-bis[bis(phenylmethoxy)phosphoryl]butanoate 在
palladium on activated charcoal
氢气 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 16.0h,
以97%的产率得到4,4-Bis-phosphono-butyric acid (8R,9S,13S,14S,17S)-3-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl ester