乙酸酐 、
1,3,4,6-Tetra-O-acetyl-2-O-(3,4,6-tri-O-acetyl-2-N-allyloxycarbonylamino-2-deoxy-β-D-glucopyranosyl)-α-D-mannopyranose 在
四(三苯基膦)钯 吡啶 、
丙二酸二甲酯 作用下,
生成 2-O-(2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranosyl)-1,3,4,6-tetra-O-acetyl-α-D-mannopyranose