4-O-(2-trifluoracetamido-2-deoxy-3,4,6-tri-O-acetyl-D-glucopyranosyl)-3-O-acetyl-1,6-anhydro-2-azido-2-deoxy-β-D-glucopyranose 、
乙酸酐 在
三氟化硼乙醚 作用下,
反应 1.5h,
以80%的产率得到4-O-(2-trifluoracetamido-2-deoxy-3,4,6-tri-O-acetyl-D-glucopyranosyl)-1,3,6-tri-O-acetyl-2-azido-2-deoxy-D-glucopyranose