3,5-Dimethylcytidine

2'-Deoxy-5-fluoro-3-methylcytidine

5-(3-Aminopropyl)-2'-deoxy-2'-fluorouridine

2'-Deoxy-5-[3-[[2-[1-[(diphenylamino)carbonyl]-1H-imidazol-4-yl]acetyl]amino]-1-propyn-1-yl]-2'-fluorouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-S-methyl-2-thiouridine

2'-Deoxy-5-[3-[[2-[1-[(diphenylamino)carbonyl]-1H-imidazol-4-yl]acetyl]amino]propyl]-2'-fluorouridine

5-(3-Amino-1-propyn-1-yl)-2'-deoxy-2'-fluorouridine

Glycine, N-phosphono-, 1-methyl ester, cyclic (P→3',5')-ester with 2'-deoxy-5-fluorouridine

L-Alanine, N-[P(R)]-phosphono-, 1-methyl ester, cyclic (P→3',5')-ester with 2'-deoxy-5-fluorouridine

L-Alanine, N-[P(S)]-phosphono-, 1-methyl ester, cyclic (P→3',5')-ester with 2'-deoxy-5-fluorouridine

2'-Deoxyadenylyl-(3'→5')-thymidylyl-(3'→5')-2'-deoxyadenylyl-(3'→5')-thymidylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-3'-amino-2',3'-dideoxycytidine

5'-O-[(1,1-Dimethylethyl)dimethylsilyl]-3'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-O-methyluridine

5'-[[[2-[[5-[(3aS,4S,6aR)-Hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]ethyl]amino]hydroxyphosphinyl]thymidylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-3'-amino-2',3'-dideoxycytidine

5'-[[[2-[[5-[(3aS,4S,6aR)-Hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]ethyl]amino]hydroxyphosphinyl]thymidylyl-(3'→5')-thymidylyl-(3'→5')-2'-deoxyadenylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-3'-amino-2',3'-dideoxyguanosine

2'-Bromo-2',5'-dideoxy-5-fluorouridine

5'-Deoxy-5-fluorouridine 4-hydrazone

5'-Deoxy-5-fluorouridine 4-oxime

2',5'-Dideoxy-5-fluoro-4-thiouridine

2'-Bromo-2',5'-dideoxy-5-fluoro-4-thiouridine

5'-Deoxy-5-fluorouridine 4-[O-[(diethoxyphosphinyl)methyl]oxime]