1-[2-O-[2-[[(1,1-Dimethylethyl)diphenylsilyl]oxy]ethyl]-3,5-bis-O-(tetrahydro-2H-pyran-2-yl)-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2-O-(2-Fluoroethyl)-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2-O-(2-Fluoroethyl)-3,5-bis-O-(tetrahydro-2H-pyran-2-yl)-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2-O-[(1,1-Dimethylethoxy)carbonyl]-3,5-bis-O-(tetrahydro-2H-pyran-2-yl)-β-D-arabinofuranosyl]-5-methyl-3-[2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]-2,4(1H,3H)-pyrimidinedione

5-(2-Bromoethenyl)-1-(2-deoxy-β-D-threo-pentofuranosyl)-2,4(1H,3H)-pyrimidinedione

5-(2-Bromoethenyl)-1-(3,5-di-O-acetyl-2-deoxy-β-D-threo-pentofuranosyl)-2,4(1H,3H)-pyrimidinedione

1-(2-Deoxy-β-D-threo-pentofuranosyl)-5-ethyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-[(3aS,5aR,7R,8R,8aR)-8-[[(1,1-dimethylethyl)dimethylsilyl]oxy]hexahydro-2,2-dioxido-3a-(pentyloxy)-3H-furo[3,2-c]-1,2-oxathiolo[4,5-b]pyrrol-7-yl]-5-methyl-

1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethoxy)carbonyl]-2-fluoro-β-D-arabinofuranosyl]-5-methyl-3-[2-[[(4-methylphenyl)sulfonyl]oxy]ethyl]-2,4(1H,3H)-pyrimidinedione

1-[(2R,3R,3aS,7aR)-Hexahydro-3-(2-methoxypropoxy)-3a-(phenylmethoxy)-7a-[(phenylmethoxy)methyl]-2H-furo[2,3-c]pyran-2-yl]-6-methyl-2,4(1H,3H)-pyrimidinedione

Phosphoric acid, mono[[(2R,5S)-5-(4-amino-5-fluoro-2-oxo-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]methyl] mono[[(2R,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-2-ethynyl-2,5-dihydro-2-furanyl]methyl] ester

2,4(1H,3H)-Pyrimidinedione, 1-[(2R,4S)-4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]tetrahydro-5,5-bis[(triphenylmethoxy)methyl]-2-furanyl]-5-methyl-

1-[(1R,3R,4S,5R)-4-Hydroxy-3-(hydroxymethyl)-6-(2-phenoxyacetyl)-2-oxa-6-azabicyclo[3.2.0]hept-1-yl]-2,4(1H,3H)-pyrimidinedione

5'-O-Amino-2'-deoxy-5-methylcytidine

Uridine, 2'-deoxy-5-[2-(4-pentylphenyl)ethynyl]-, 3',5'-diacetate

5-[3-[Bis(4-methoxyphenyl)phenylmethoxy]propyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

1-[(1S,3R,4S,7R)-7-Hydroxy-1-(hydroxymethyl)-5-[2-(1-pyrenyl)acetyl]-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2S,5S)-5-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]-5-ethyl-6-(phenylmethyl)-2,4(1H,3H)-pyrimidinedione

1-[(3aR,4R,6aS)-6,6-Bis[(benzoyloxy)methyl]tetrahydro-2-oxidofuro[3,4-d]-1,3,2-dioxathiol-4-yl]-2,4(1H,3H)-pyrimidinedione

1-[(5R,6R,8R,9R)-4-Amino-9-[[dimethyl(1,1,2-trimethylpropyl)silyl]oxy]-6-[[[dimethyl(1,1,2-trimethylpropyl)silyl]oxy]methyl]-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-2,4(1H,3H)-pyrimidinedione