(methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-O-(1→4)-1,6-anhydro-2-azido-3-O-benzyl-2-deoxy-β-D-glucopyranose 、
(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 trichloroacetimidate 在
叔丁基二甲硅基三氟甲磺酸酯 作用下,
以
甲苯 、
二氯甲烷 为溶剂,
反应 7.5h,
以43%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-anhydro-2-azido-3-O-benzyl-2-deoxy-β-D-glucopyranose