2-azido-3-O-benzyl-6-O-acetyl-2-deoxy-α-D-glucopyranosyl-(1,4)-methyl 1,2-di-O-acetyl-3-O-benzyl-β-L-idopyranuronate 、 2-azido-3-O-benzyl-4-p-methoxybenzyl-6-O-acetyl-2-deoxy-α-D-glucopyranosyl-(1,4)-methyl 2-O-acetyl-3-O-benzyl-L-idopyranuronate trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以45%的产率得到(2-azido-3-O-benzyl-4-O-p-methoxybenzyl-6-O-acetyl-2-deoxy-α-D-glucopyranosyl-(1,4)-methyl 2-O-acetyl-3-O-benzyl-β-L-idopyranosyluronate-(1,4)-2-azido-3-O-benzyl-6-O-acetyl-2-deoxy-α-D-glucopyranosyl-(1,4)-methyl 1,2-di-O-acetyl-3-O-benzyl-β-L-idopyranouronate)