3,4-isopropylidene-2-fluoro-2-O-methyl-D-ribopentopyranosyl fluoride 、
2,4-二(三甲硅氧基)嘧啶 在
Cp
2HfCl
2*AgClO
4 作用下,
以
苯 为溶剂,
反应 48.0h,
生成
1-((3aR,6R,7S,7aR)-7-Fluoro-7-methoxy-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-yl)-1H-pyrimidine-2,4-dione 、 1-((3aR,6R,7S,7aR)-7-Fluoro-7-methoxy-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-yl)-1H-pyrimidine-2,4-dione