溴甲苯 、
benzyl 2-azido-4,6-di-O-benzyl-2-deoxy-3-O-(3,4-O-isopropylidene-β-D-galactopyranosyl)-β-D-galactopyranoside 在
sodium hydride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以96%的产率得到(3aS,4R,6R,7R,7aS)-6-((2R,3R,4R,5R,6R)-3-Azido-2,5-bis-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-4-yloxy)-7-benzyloxy-4-benzyloxymethyl-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran