(2R,3R)-3-(3,4-Dimethoxy-phenyl)-4-[1-(4-methoxy-phenyl)-meth-(E)-ylidene]-5-oxo-tetrahydro-furan-2-carboxylic acid methyl ester 在
palladium on activated charcoal
氢气 作用下,
以
甲醇 为溶剂,
生成
(2R,3S)-3-(3,4-Dimethoxy-phenyl)-4-(4-methoxy-benzyl)-5-oxo-tetrahydro-furan-2-carboxylic acid methyl ester