ethyl 2-azido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranosyl-(1->4)-2-O-benzoyl-3-O-benzyl-6-O-levulinoyl-α-L-idopyranoside 、 在
silver trifluoromethanesulfonate 、
4-甲基苯硫氯 作用下,
以
乙醚 、
二氯甲烷 为溶剂,
反应 2.16h,
生成 ethyl 2-azido-3,6-di-O-benzyl-4-O-tert-butyldimethylsilyl-2-deoxy-α-D-glucopyranosyl-(1->4)-2-O-benzoyl-3-O-benzyl-6-O-levulinoyl-α-L-idopyranosyl-(1->4)-2-azido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranosyl-(1->4)-2-O-benzoyl-3-O-benzyl-6-O-levulinoyl-α-L-idopyranosyl-2-azido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranosyl-(1->4)-2-O-benzoyl-3-O-benzyl-6-O-levulinoyl-α-L-idopyranoside