4-甲氧基苯硫酚 、
4,7,8,9-tetra-O-acetyl-5-acetamido-2,3,5-tri-deoxy-2-phenylthio-D-glycero-β-D-galacto-non-2-ulopyranosonic acid 在
氯甲酸乙酯 、
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以74%的产率得到4-methoxyphenylthio 4,7,8,9-tetra-O-acetyl-5-acetamido-2,3,5-tri-deoxy-2-phenylthio-D-glycero-β-D-galacto-non-2-ulopyranosonate