(2,3-di-O-p-methoxybenzyl-β-D-glucopyranosyl)-(1'→1)-(2S,3R,4E)-2-octadecanamido-4-octadecene-1,3-diol-3,6'-succinate 、 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-galactopyranosyl-(1→4)-{[methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate]-(2→3)}-2,6-di-Obenzoyl-β-D-galactopyranosyl-(1→3)-2-acetamido-4,6-di-O-acetyl-2-deoxy-β-D-galactopyranosyl-(1→4)-2,3,6-tri-O-benzoyl-α-D-galactopyranosyl trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以
氯仿 为溶剂,
反应 1.5h,
以26%的产率得到4-O-{2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-galactopyranosyl-(1→4)-[(methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2→3)]-2,6-di-Obenzoyl-β-D-galactopyranosyl-(1→3)-2-acetamido-4,6-di-O-acetyl-2-deoxy-β-D-galactopyranosyl-(1→4)-2,3,6-tri-O-benzoyl-β-D-galactopyranosyl-(1→4)}-2,3-di-O-p-methoxybenzyl-β-D-glucopyranosyl-(1'→1)-(2S,3R,4E)-2-octadecanamido-4-octadecene-1,3-diol-3,6'-succinate