6
I-[2-[N′-[2,2,2-tris[5-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosylthio)-2-oxapentyl]ethyl]thioureido]ethylthio]cyclomaltoheptaose 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以97%的产率得到6
I-[2-[N'-[2,2,2-tris[(5-α-D-mannopyranosylthio)-2-oxapentyl]ethyl]thioureido]ethylthio]cyclomaltoheptaose