Benzoic acid (2R,3R,4S,5R,6R)-6-[(2R,3R,4S,5R,6R)-6-allyloxy-4,5-bis-(4-methoxy-benzyloxy)-2-(4-methoxy-benzyloxymethyl)-tetrahydro-pyran-3-yloxy]-4,5-bis-(4-methoxy-benzyloxy)-2-(4-methoxy-benzyloxymethyl)-tetrahydro-pyran-3-yl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
以90%的产率得到Benzoic acid (2R,3S,4R,5R,6R)-6-((2R,3S,4R,5R,6R)-6-allyloxy-4,5-dihydroxy-2-hydroxymethyl-tetrahydro-pyran-3-yloxy)-4,5-dihydroxy-2-hydroxymethyl-tetrahydro-pyran-3-yl ester