(methyl 2-O-acetyl-3-O-benzyl-4-O-levulinoyl-α-L-idopyranosyluronate)-(1-4)-2-azido-3-O-benzyl-6-O-tert-butyldiphenylsilyl-2-deoxy-α,β-D-glucopyranose trichloroacetimidate 、
2-propylpentyl (methyl-2-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1-4)-3-O-benzyl-6-O-tert-butyldiphenylsilyl-2-deoxy-2-[(benzyloxy)carbonyl]-amino-β-D-glucopyranoside 在
叔丁基二甲硅基三氟甲磺酸酯 、
碳酸氢钠 作用下,
以
二氯甲烷 为溶剂,
反应 2.5h,
以47%的产率得到2-propylpentyl (methyl-2-O-acetyl-3-O-benzyl-4-O-levulinoyl-α-L-idopyranosyluronate)-(1-4)-(2-azido-3-O-benzyl-6-O-tert-butyldiphenylsilyl-2-deoxy-α-D-glucopyranosyl)-(1-4)-(methyl-2-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1-4)-3-O-benzyl-6-O-tert-butyldiphenylsilyl-2-deoxy-2-[(benzyloxy)carbonyl]amino-β-D-glucopyranoside