(allyl 2,3,4-tri-O-benzyl-β-D-glucopyranosyluronate)-(1->4)-(6-O-acetyl-2-azido-3-O-benzyl-2-deoxy-α-D-glucopyranosyl)-(1->4)-(methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1->4)-1,6-anhydro-2-azido-3-O-benzyl-2-deoxy-β-D-glucopyranose 、
乙酸酐 在
溶剂黄146 、
三氟乙酸 作用下,
以90%的产率得到(allyl 2,3,4-tri-O-benzyl-β-D-glucopyranosyluronate)-(1->4)-(6-O-acetyl-2-azido-3-O-benzyl-2-deoxy-α-D-glucopyranosyl)-(1->4)-(methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1->4)-1,6-di-O-acetyl-2-azido-3-O-benzyl-2-deoxy-D-glucopyranose