2'-Deoxy-4'-C-ethenyl-2'-fluorouridine

4'-C-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-fluorouridine

2'-Deoxy-2'-fluoro-4'-C-methoxycytidine

2',5'-Dideoxy-2'-fluoro-5'-iodo-4'-C-methoxyuridine

4'-C-Cyclopropyl-2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-fluorouridine

3-Benzoyl-2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-ethenyl-2'-fluorouridine

2'-Deoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-fluorouridine

3'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4'-C-(chloromethyl)-2'-deoxy-2'-fluorouridine

4'-C-(Chloromethyl)-2'-deoxy-2'-fluoro-3'-O-[(4-methoxyphenyl)diphenylmethyl]-5-methyluridine

4'-C-(Chloromethyl)-2'-deoxy-2'-fluoro-5-methylcytidine

4'-C-(Chloromethyl)-2'-deoxy-2'-fluoro-3',5'-bis-O-[(4-methoxyphenyl)diphenylmethyl]-5-methylcytidine

4'-C-(Chloromethyl)-2'-deoxy-2'-fluoro-3',5'-bis-O-[(4-methoxyphenyl)diphenylmethyl]-5-methyluridine

4'-C-(Chloromethyl)-2'-deoxy-2'-fluoro-3',5'-bis-O-[(4-methoxyphenyl)diphenylmethyl]-N-methylcytidine

4'-C-(Chloromethyl)-2'-deoxy-2'-fluoro-N-methylcytidine

5-[2-[4-[2-[4-[2-[2,5-Bis(pentyloxy)-4-[2-[4-[[2-(4-pyridinyl)ethyl]thio]phenyl]ethynyl]phenyl]ethynyl]-2,5-difluorophenyl]ethynyl]-2,5-difluorophenyl]ethynyl]-2'-deoxyuridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-[2-[4-[2-[4-[2-[2,5-bis(pentyloxy)-4-[2-[4-[[2-(4-pyridinyl)ethyl]thio]phenyl]ethynyl]phenyl]ethynyl]-2,5-difluorophenyl]ethynyl]-2,5-difluorophenyl]ethynyl]-2'-deoxyuridine

3',5'-Bis[(carboxymethyl)sulfonyl]-3',5'-dideoxythymidine

5,6-Dimethyl 2-bromo-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-benzimidazole-5,6-dicarboxylate

5'-Deoxy-5-fluoro-3-[[1-[(4-fluorophenyl)methyl]-1H-1,2,3-triazol-4-yl]methyl]-5'-iodouridine

5,6-Dimethyl 1-β-D-ribofuranosyl-1H-benzimidazole-5,6-dicarboxylate