(benzyl 2-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1-4)-(1,6-anhydro-2-azido-3-O-benzyl-2-deoxy-β-D-glucopyranose) 、
(benzyl 2,4-di-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1-4)-(6-O-acetyl-2-azido-3-O-benzyl-2-deoxy-α,β-D-glucopyranose trichloroacetimidate) 在
叔丁基二甲硅基三氟甲磺酸酯 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
反应 0.75h,
以54%的产率得到(benzyl 2,4-di-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1-4)-(6-O-acetyl-2-azido-3-O-benzyl-2-deoxy-α-D-glucopyranosyl)-(1-4)-(benzyl2-O-acetyl-3-O-benzyl-α-L-idopyranosyluronate)-(1-4)-(1,6-anhydro-2-azido-3-O-benzyl-2-deoxy-β-D-glucopyranose)