(E)-4-[(2R,4aR,6S,7R,8aS)-7-(tert-Butyl-dimethyl-silanyloxy)-4a,6-dimethyl-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yl]-2-methyl-but-2-enoic acid ethyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙酸乙酯 为溶剂,
反应 40.0h,
以97%的产率得到4-[(2R,4aR,6S,7R,8aS)-7-(tert-Butyl-dimethyl-silanyloxy)-4a,6-dimethyl-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yl]-2-methyl-butyric acid ethyl ester