三氯乙腈 、
O-(benzyl 4-O-levulinyl-2,3-di-O-methyl-β-D-glucopyranosyluronate)-(1->4)-3,6-di-O-acetyl-2-O-benzyl-α,β-D-glucopyranose 在
caesium carbonate 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
生成 O-(benzyl 4-O-levulinyl-2,3-di-O-methyl-β-D-glucopyranosyluronate)-(1->4)-3,6-di-O-acetyl-2-O-benzyl-β-D-glucopyranosyl trichloroacetimidate 、 O-(benzyl 4-O-levulinyl-2,3-di-O-methyl-β-D-glucopyranosyluronate)-(1->4)-3,6-di-O-acetyl-2-O-benzyl-α-D-glucopyranosyl trichloroacetimidate