2-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-4-methylpyrimido[1,6-a]benzimidazol-1(2H)-one

Uridine, 2'-deoxy-5-(tributylstannyl)-, 5'-[5-oxo-5-(tricyclo[3.3.1.13,7]dec-1-ylamino)pentanoate]

Uridine, 2'-deoxy-5-(tributylstannyl)-, 5'-tricyclo[3.3.1.13,7]decane-1-carboxylate

Cytidine, 5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-[(1R)-1-[(methylsulfonyl)oxy]ethyl]-3'-O-(2-naphthalenylmethyl)-5-methyl-, 2'-acetate

2-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-3-O-(hydroxyphosphinyl)-β-D-erythro-pentofuranosyl]-4-methylnaphth[2',3':4,5]imidazo[1,2-c]pyrimidin-1(2H)-one

3'-Adenylic acid, 2'-deoxycytidylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-thymidylyl-(3'→5')-2'-deoxycytidylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxy-

3'-Deoxy-3'-[3-[[(3S,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-hydroxy-2-furanyl]amino]propyl]thymidine

2,4(1H,3H)-Pyrimidinedione, 1-[5-(3-aminopropyl)tetrahydro-4-hydroxy-2-furanyl]-5-ethyl-, [2R-(2α,4β,5α)]-

1-(5-Azido-2,5-dideoxy-2-fluoro-β-D-arabinofuranosyl)-5-ethyl-2,4(1H,3H)-pyrimidinedione

Uridine, 5'-azido-5-(2-chloroethyl)-2',5'-dideoxy-

Uridine, 2'-deoxy-5-ethyl-3'-O-ethyl-

Uridine, 2',5'-dideoxy-5-ethyl-5'-[(9H-fluoren-9-ylcarbonyl)amino]-, 3'-hexadecanoate

Cytidine, 5'-[[(2-bromophenyl)acetyl]amino]-2',5'-dideoxy-5-ethyl-

Uridine, 2',5'-dideoxy-5-ethyl-5'-[(9H-fluoren-9-ylcarbonyl)amino]-, 3'-butanoate

Uridine, 5'-[[[2-(acetylamino)phenyl]acetyl]amino]-2',5'-dideoxy-5-ethyl-, 3'-acetate

Uridine, 2',5'-dideoxy-5'-[[(2,6-dichlorophenyl)acetyl]amino]-5-ethyl-, 3'-(3,3-dimethylbutanoate)