(3,4,6-tri-O-acetyl-2-O-chloroacetyl-α-D-mannopyranosyl)-(1<*>3)-(2,4,6-tri-O-acetyl-β-D-mannopyranosyl)-(1<*>4)-2,3-di-O-acetyl-1,6-anhydro-β-D-glucopyranose 在
吡啶 、
硫脲 作用下,
以
乙醇 为溶剂,
反应 1.5h,
以77%的产率得到(3,4,6-tri-O-acetyl-α-D-mannopyranosyl)-(1<*>3)-(2,4,6-tri-O-acetyl-β-D-mannopyranosyl)-(1<*>4)-2,3-di-O-acetyl-1,6-anhydro-β-D-glucopyranose