乙酸酐 、
在
吡啶 作用下,
反应 12.0h,
以152 mg的产率得到(2,3,6-tri-O-acetyl-4-t-butoxycarbonylamido-4-deoxy-β-D-glucopyranosyl)-C-carboxamido-4-N-(2,3,6-tri-O-acetyl-4-deoxy-β-D-glucopyranosyl)-C-carboxamido-4-N-(2,3,6-tri-O-acetyl-4-deoxy-β-D-glucopyranosyl)-C-carboxamido-N-L-phenylalanine methyl ester