2-(trimethylsilyl)ethyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-galactopyranosyl-(1->3)-4-O-acetyl-2,6-di-O-benzyl-β-D-galactopyranoside 在
sodium methylate 、
对甲苯磺酸 作用下,
以
乙醇 、
N,N-二甲基甲酰胺 为溶剂,
反应 8.25h,
生成 2-(trimethylsilyl)ethyl 6-O-tert-butyldiphenylsilyl-3,4-O-isopropylidene-2-deoxy-2-phthalimido-β-D-galactopyranosyl-(1->3)-4-O-acetyl-2,6-di-O-benzyl-β-D-galactopyranoside