2-(p-methoxyphenoxy) ethyl (2-O-acetyl-3,4-di-O-benzyl-α-L-rhamnopyranosyl)-(1→2)-(3,4-di-O-benzyl-α-L-rhamnopyranosyl)-(1→4)-(2,3,6-tri-O-benzyl-α-D-glucopyranosyl)-(1→3)-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside 、
ethyl 3-O-acetyl-4,6-O-benzylidene-2-deoxy-2-phthalimido-1-thio-β-D-glucopyranoside 在
N-碘代丁二酰亚胺 、
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以73%的产率得到2-(p-methoxyphenoxy) ethyl (3-O-acetyl-4,6-O-benzylidene-2-deoxy-2-N-phthalimido-β-D-glucopyranosyl)-(1→2)-(3,4-di-O-benzyl-α-L-rhamnopyranosyl)-(1→2)-(3,4-di-O-benzyl-α-L-rhamnopyranosyl)-(1→4)-(2,3,6-tri-O-benzyl-α-D-glucopyranosyl)-(1→3)-2-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside