Acetic acid (2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-[(2S,4S,5R,6S)-4,5-bis-benzyloxy-6-((2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylmethoxy)-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-pyran-2-ylmethyl ester 在
甲醇 、
sodium methylate 作用下,
以
甲苯 为溶剂,
反应 3.0h,
以89.7%的产率得到{(2R,3R,4S,5R,6S)-3,4,5-Tris-benzyloxy-6-[(2S,4S,5R,6S)-4,5-bis-benzyloxy-6-((2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylmethoxy)-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-pyran-2-yl}-methanol