5-amino-2-pyridyl 3,4,6-tri-O-acetyl-2-deoxy-1-thio-α-D-galactopyranoside 、
2',3'-O-isopropylidene-uridine-5'-carboxylic acid 在
4-(4,6-二甲氧基三嗪-2-基)-4-甲基吗啉盐酸盐 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以43%的产率得到(2R,3R,4R,6R)-2-(acetoxymethyl)-6-((5-((3aS,4S,6R,6aR)-6-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxole-4-carboxamido)pyridin-2-yl)thio)tetrahydro-2H-pyran-3,4-diyl diacetate