3-O-chloroacetyl-2-deoxy-4-O-(4'-N'-monodemethyl-N'-trichloroethoxycarbamoyl-β-D-forosaminyl)-2-N-methyl-N-trichloroethoxycarbamoyl-D-xylopyranose 、
三氯乙腈 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
生成
3-O-chloroacetyl-2-deoxy-4-O-(4'-N'-monodemethyl-N'-trichloroethoxycarbamoyl-β-D-forosaminyl)-2-N-methyl-N-trichloroethoxycarbamoyl-β-D-xylopyranosyl trichloroacetimidate 、 3-O-chloroacetyl-2-deoxy-4-O-(4'-N'-monodemethyl-N'-trichloroethoxycarbamoyl-β-D-forosaminyl)-2-N-methyl-N-trichloroethoxycarbamoyl-α-D-xylopyranosyl trichloroacetimidate