(E)-3-[(2R,3S,4aR,6S,7R,8aS)-7-Benzyloxy-6-(2-benzyloxy-ethyl)-3-(tert-butyl-dimethyl-silanyloxy)-2,6,8a-trimethyl-octahydro-pyrano[3,2-b]pyran-2-yl]-acrylic acid methyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙酸乙酯 为溶剂,
反应 6.0h,
以100%的产率得到methyl 3-[(2S,3R,4aS,6R,7S,8aR)-7-[tert-butyl(dimethyl)silyl]oxy-2,4a,6-trimethyl-3-phenylmethoxy-2-(2-phenylmethoxyethyl)-4,7,8,8a-tetrahydro-3H-pyrano[3,2-b]pyran-6-yl]propanoate