乙酸酐 、
tert-Butyldimethylsilyl O-(2-O-acetyl-3,4,6-tri-O-benzyl-β-D-galactopyranosyl)-(1-4)-3-O-benzyl-β-D-xylopyranoside 在
吡啶 作用下,
反应 12.0h,
以95%的产率得到tert-Butyldimethylsilyl O-(2-O-Acetyl-3,4,6-tri-O-benzyl-β-D-galactopyranosyl)-(1-4)-2-O-acetyl-3-O-benzyl-β-D-xylopyranoside