carboxymethyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-D-glucopyranoside 、
2',3'-O-Isopropylidene-5'-O-sulfamoyluridine 在
4-二甲氨基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
反应 16.0h,
以48%的产率得到(2R,3S,4R,5R,6S)-5-acetamido-2-(acetoxymethyl)-6-(2-(((((3aR,4R,6R,6aR)-6-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methoxy)sulfonyl)amino)-2-oxoethoxy)tetrahydro-2H-pyran-3,4-diyl diacetate