乙酸酐 、 α-D-Man-(1->3)-α-D-Man-(1->3)-α-D-Man-(1->2)-D-Man 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 96.0h,
以95%的产率得到2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->3)-2,4,6-tri-O-acetyl-α-D-mannopyranosyl-(1->3)-2,4,6-tri-O-acetyl-α-D-mannopyranosyl-(1->2)-1,3,4,6-tetra-O-acetyl-D-mannopyranose