Acetic acid (2R,3R,4S,5R,6S)-3,4,5-tris-benzyloxy-6-((E)-1-methyl-propenyloxy)-tetrahydro-pyran-2-ylmethyl ester 、
{(2R,3R,4S,5R,6R)-3,4,5-Tris-benzyloxy-6-[(2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-(1-methyl-allyloxy)-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-pyran-2-yl}-methanol 在
三氟甲磺酸三甲基硅酯 作用下,
以
乙腈 为溶剂,
生成 Acetic acid (2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-{(2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-[(2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-(1-methyl-allyloxy)-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-pyran-2-ylmethoxy}-tetrahydro-pyran-2-ylmethyl ester