benzyl (2-O-acetyl-3,4-di-O-benzyl-6-deoxy-β-D-glucopyranosyl)-(1→4)-(3-O-benzyl-β-D-xylopyranosyl)-(1→3)-2,4-di-O-benzyl-6-deoxy-β-D-glucopyranoside 、
三氟乙酸酐 在
吡啶 作用下,
反应 2.0h,
以96%的产率得到benzyl (2-O-acetyl-3,4-di-O-benzyl-6-deoxy-β-D-glucopyranosyl)-(1→4)-(3-O-benzyl-2-O-trifluoroacetyl-β-D-xylopyranosyl)-(1→3)-2,4-di-O-benzyl-6-deoxy-β-D-glucopyranoside