(25S)-3β-(tert-butyldimethylsilyloxy)-26-(pivaloyloxy)-5α-cholest-7-ene 在
platinum(IV) oxide 、
氢气 、
溶剂黄146 作用下,
以
乙酸乙酯 为溶剂,
反应 48.0h,
以94%的产率得到[(2S,6R)-6-[(3S,5S,9R,10S,13R,17R)-3-[tert-butyl(dimethyl)silyl]oxy-10,13-dimethyl-2,3,4,5,6,7,9,11,12,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methylheptyl] 2,2-dimethylpropanoate