4-Methylphenyl 6-O-acetyl-3,4-di-O-benzyl-2-O-levulinyl-1-thio-beta-D-glucopyranoside 、
1,6-anhydro-4-O-[2-azido-3-O-(4-bromobenzyl)-6-O-tert-butyldiphenylsilyl-2-deoxy-α-D-glucopyranosyl]-2-O-benzoyl-3-O-benzyl-β-L-idopyranose 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,
反应 3.0h,
以92%的产率得到(6-O-Acetyl-3,4-di-O-benzyl-2-O-levulinyl-beta-D-glucopyranosyl)-(1-4)-[2-azido-3-O-(4-bromobenzyl)-6-O-tert-butyldiphenylsilyl-2-deoxy-alpha-D-glucopyranosyl]-(1-4)-1,6-anhydro-2-O-benzoyl-3-O-benzyl-beta-L-idopyranose