乙酸酐 、
(3,4,6-tri-O-acetyl-2-O-chloroacetyl-α-D-mannopyranosyl)-(1<*>3)-(4,6-di-O-acetyl-β-D-mannopyranosyl)-(1<*>4)-2,3-di-O-acetyl-1,6-anhydro-β-D-glucopyranose 在
吡啶 作用下,
反应 3.0h,
以96.5%的产率得到(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