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]

2',5'-Dideoxy-5-fluorouridine 4-oxime

2'-Bromo-2',5'-dideoxy-5-fluorouridine 4-oxime

5'-Deoxy-5-fluorouridine 4-[O-[(4-methylphenyl)sulfonyl]oxime]

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

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

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

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

5'-Deoxy-5-fluorouridine 4-[O-[(1-methylethoxy)carbonyl]oxime]

5'-Deoxy-5-fluorouridine 4-[O-[(dodecyloxy)carbonyl]oxime]

5'-Deoxy-5-fluorouridine 4-[O-[(decyloxy)carbonyl]oxime]

5'-Deoxy-5-fluorouridine 4-[O-[(3-methylbutoxy)carbonyl]oxime]