(2R,4R)-2-((3S,8R,9S,10R,13R,14S,15R,17R)-15-(benzoyloxy)-3-((tert-butyldiphenylsilyl)oxy)-10,13-dimethyl-7-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl)-6-methylheptan-4-yl benzoate 在
sodium hydroxide 、 sodium tetrahydroborate 、 cerium(III) chloride 、
硼烷四氢呋喃络合物 、
双氧水 、 phosphorus pentoxide 作用下,
生成
[(1R,2R,6R,7S,9S,12R,13S,16R,17R,19R,20S)-17-[(2R,4R)-4-benzoyloxy-6-methylheptan-2-yl]-9-[tert-butyl(diphenyl)silyl]oxy-12,16-dimethyl-3,5-dioxapentacyclo[11.7.0.02,6.07,12.016,20]icosan-19-yl] benzoate