benzyl 3-O-benzyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1<*>4)-2-acetamido-3,6-di-O-benzyl-2-deoxy-α-D-glucopyranoside 在
乙酸酐 、
二甲基亚砜 作用下,
以96.5%的产率得到N-[(2S,3R,4R,5S,6R)-2,4-Bis-benzyloxy-6-benzyloxymethyl-5-((2R,4aR,6S,8S,8aR)-8-benzyloxy-7-oxo-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yloxy)-tetrahydro-pyran-3-yl]-acetamide