1-[5-O-Benzoyl-2,6-dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-(5-O-Benzoyl-2,6-dideoxy-2-fluoro-β-D-allofuranosyl)-2,4(1H,3H)-pyrimidinedione

1-[5-O-Benzoyl-2,6-dideoxy-2-fluoro-3-O-(2-naphthalenylmethyl)-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2,6-Dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-α-L-talofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2,6-Dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-5-O-(4-nitrobenzoyl)-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2,6-dideoxy-2-fluoro-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2,6-dideoxy-2-fluoro-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2,6-dideoxy-2-fluoro-α-L-talofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2,6-dideoxy-2-fluoro-α-L-talofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2,6-dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-α-L-talofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[3-O-[[2-Chloro-4-(triphenylmethyl)phenoxy](2-cyanoethoxy)phosphinyl]-2-deoxy-α-D-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2'-[(Aminocarbonyl)amino]-2'-deoxyuridine 5'-(trihydrogen diphosphate)

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[2-chloro-4-(triphenylmethyl)phenoxy](2-cyanoethoxy)phosphinyl]-2-deoxy-α-D-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[2-chloro-4-(triphenylmethyl)phenoxy]hydroxyphosphinyl]-2-deoxy-α-D-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2'-[(Aminocarbonyl)amino]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

2'-[(Aminocarbonyl)amino]-2'-deoxyuridine

5-Methyl-1-[(2R,4R,5R)-tetrahydro-4-hydroxy-5-(2-propyn-1-yl)-2-furanyl]-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(2R,4S,5R)-tetrahydro-4-hydroxy-5-(2-propyn-1-yl)-2-furanyl]-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(2R,4S,5R)-tetrahydro-4-[(4-nitrobenzoyl)oxy]-5-[3-(trimethylsilyl)-2-propyn-1-yl]-2-furanyl]-2,4(1H,3H)-pyrimidinedione