p-methylphenyl (6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-α-D-glucopyranosyl)-(1→4)-O-(methyl-2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1→4)-O-3,6-di-O-acetyl-2-azido-2-deoxy-1-thio-α/β-D-glucopyranoside 、 methyl O-(methyl 2-O-benzoyl-3-O-benzyl-α-L-idopyranosyluronate)-(1→4)-2-azido-6-O-benzoyl-3-benzyl-2-deoxy-α-D-glucopyranoside 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
以
二氯甲烷 为溶剂,
以16 g的产率得到methyl O-(6-O-acetyl-2-azide-3,4-di-O-benzyl-2-deoxy-2-α-D-glucopyranosyl)-(1→4)-O-(methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1→4)-O-3,6-di-O-acetyl-2-azido-2-deoxy-α-D-glucopyranosyl-(1→4)-O-(methyl 2-O-benzoyl-3-O-benzyl-α-L-idopyranosyluronate)-(1→4)-2-azido-6-O-benzoyl-3-benzyl-2-deoxy-α-D-glucopyranoside