[(2S,4S,5R,6S)-4,5-Bis-benzyloxy-6-methoxy-2-(4-methoxy-benzyloxymethyl)-dihydro-pyran-(3Z)-ylidene]-acetic acid methyl ester 在
palladium on activated charcoal
氢气 作用下,
以
乙醇 为溶剂,
反应 3.0h,
以98%的产率得到[(2S,3R,4S,5R,6S)-4,5-Bis-benzyloxy-6-methoxy-2-(4-methoxy-benzyloxymethyl)-tetrahydro-pyran-3-yl]-acetic acid methyl ester