Toluene-4-sulfonic acid 3-[(9R,13S,14S,17S)-17-(tert-butyl-dimethyl-silanyloxy)-3-methoxy-13-methyl-6,11,12,13,14,15,16,17-octahydro-cyclopenta[a]phenanthren-9-yl]-propyl ester 在
三乙基硼氢化锂 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以88%的产率得到tert-Butyl-((9S,13S,14S,17S)-3-methoxy-13-methyl-9-propyl-9,11,12,13,14,15,16,17-octahydro-6H-cyclopenta[a]phenanthren-17-yloxy)-dimethyl-silane