1-((2R,3R,4R,5R)-5-(chloromethyl)-3-fluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione

((2R,3R,4R,5R)-2-(chloromethyl)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-fluoro-3-hydroxytetrahydrofuran-2-yl)methyl dihydrogen phosphate

((2R,3R,4R,5R)-2-(chloromethyl)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-fluoro-3-hydroxytetrahydrofuran-2-yl)methyl tetrahydrogen triphosphate

1-((2R,3R,4R,5R)-5-(chloromethyl)-3-fluoro-5-(hydroxymethyl)-4-((4-methoxyphenyl)diphenylmethoxy)tetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione

1-((2R,3R,4R,5R)-5-(chloromethyl)-3-fluoro-4-((4-methoxyphenyl)diphenylmethoxy)-5-(((4-methoxyphenyl)diphenylmethoxy)methyl)tetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione