乙酸酐 、
benzyl O-β-D-glucopyranosyl-(1-3)-O-<β-D-glucopyranosyl-(1-6)>-O-(2,4-di-O-benzyl-β-D-glucopyranosyl)-(1-3)-2,4,6-tri-O-benzyl-β-D-glucopyranoside 在
吡啶 作用下,
以95%的产率得到benzyl O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-(1-3)-O-<2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl-(1-6)>-O-(2,4-di-O-benzyl-β-D-glucopyranosyl)-(1-3)-2,4,6-tri-O-benzyl-β-D-glucopyranoside