3-O-Acetyl-2-O-(3,4,6-tri-O-acetyl-2-N-allyloxycarbonylamino-2-deoxy-β-D-glucopyranosyl)-1,6-anhydro-β-D-mannopyranose 、 1,3,4,6-tetra-O-acetyl-2-deoxy-2-(allyloxycarbonylamino)-β-D-glucopyranose 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以68%的产率得到3-O-Acetyl-2,4-di-O-(3,4,6-tri-O-acetyl-2-N-allyloxycarbonylamino-2-deoxy-β-D-glucopyranosyl)-1,6-anhydro-β-D-mannopyranose