Trimethyl-[(2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-((2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylmethoxy)-tetrahydro-pyran-2-ylmethoxy]-silane 、 在
silver perchlorate 、
四氯化锡 作用下,
以
乙醚 、
正庚烷 为溶剂,
反应 20.0h,
以85.7%的产率得到Acetic acid (2S,3R,4S,6S)-6-acetoxymethyl-3-benzyloxy-2-[(2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-((2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-methoxy-tetrahydro-pyran-2-ylmethoxy)-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-pyran-4-yl ester