[(1S,4R,5S,9R,11S,12S,13S)-13-[[tert-butyl(diphenyl)silyl]oxymethyl]-5-hydroxy-4-(methoxymethoxy)-8,8,12-trimethyl-6,7-dioxatricyclo[7.4.0.01,5]tridecan-11-yl] 2,2-dimethylpropanoate 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
反应 3.5h,
以92%的产率得到[(3R,3aS,5aR,7S,8S,9S,9aS)-9-[[tert-butyl(diphenyl)silyl]oxymethyl]-3a-hydroxy-3-(methoxymethoxy)-5,5,8-trimethyl-1,2,3,5a,6,7,8,9-octahydrocyclopenta[i][2]benzofuran-7-yl] 2,2-dimethylpropanoate