5-iodo-3-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrimidine-2,4-dione 、
(4aR,7S,8R,8aR)trifluoromethanesulfonic acid-8-fluoro-2-phenyl-hexahydropyrano[3,2-d][1,3]dioxin-7-yl ester 在
sodium hydride 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
以52%的产率得到(4aR,7R,8S,8aR)1-(8-fluoro-2-phenyl-hexahydropyrano[3,2-d][1,3]dioxin-7-yl)-5-iodo-3-(2-trimethylsilylethoxymethyl)-1H-pyrimidine-2,4-dione