乙酸酐 、
O-β-D-glucopyranosyl-(1-6)-O-β-D-glucopyranosyl-(1-3)-O-β-D-glucopyranosyl-(1-3)-D-glucopyranose 在
吡啶 作用下,
以81%的产率得到O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-(1-6)-O-(2,3,4-tri-O-acetyl-β-D-glucopyranosyl)-(1-3)-O-(2,4,6-tri-O-acetyl-β-D-glucopyranosyl)-(1-3)-1,2,4,6-tetra-O-acetyl-β-D-glucopyranose