(1R,2S,3R,4S,5S)-5-benzoyloxymethyl-1-(3-toluoyloxymethyl)-7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid dibenzyl ester 在
palladium 10% on activated carbon 、
氢气 、
乙酸酐 作用下,
以
乙酸乙酯 为溶剂,
反应 5.0h,
生成
(1R,2S,3R,4S,5S)-5-benzoyloxymethyl-1-(3-toluoyloxymethyl)-7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride