乙酸酐 、
p-nitrophenyl (β-D-glucopyranosyl)-(1->3)-(β-D-glucopyranosyl)-(1->3)-(β-D-glucopyranosyl)-(1->4)-β-D-glucopyranoside 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 12.0h,
生成 p-nitrophenyl (2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-(1->3)-(2,4,6-tri-O-acetyl-β-D-glucopyranosyl)-(1->3)-(2,4,6-tri-O-acetyl-β-D-glucopyranosyl)-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranoside