(4S,6S)-6-{(S)-1-[(3S,5S,6R,7R,8S,9S,10R,13R,14S,17R)-3-(tert-Butyl-diphenyl-silanyloxy)-6,7-dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl]-ethyl}-4-isopropyl-tetrahydro-pyran-2-one 在
二异丁基氢化铝 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以0.033 g的产率得到(3S,5S,6R,7R,8S,9S,10R,13R,14S,17R)-3-(tert-Butyl-diphenyl-silanyloxy)-17-[(S)-1-((2S,4S)-6-hydroxy-4-isopropyl-tetrahydro-pyran-2-yl)-ethyl]-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthrene-6,7-diol