3'-Azido-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-3'-deoxy-N,N-dimethyladenosine

3'-Amino-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-3'-deoxy-N,N-dimethyladenosine

2',3'-O-Cyclohexylidene-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-formyl-5-methyluridine

2',3'-O-Cyclohexylidene-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-(hydroxymethyl)-5-methyluridine

2',3'-O-Cyclohexylidene-4'-C-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-5-methyluridine

4'-C-Acetyl-2',3'-O-cyclohexylidene-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyluridine

2',3'-O-Cyclohexylidene-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-[(1S)-1-hydroxyethyl]-5-methyluridine

5'-[[2-(Acetylamino)acetyl]amino]-5'-deoxyuridine

2',3'-O-Cyclohexylidene-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-[(1R)-1-hydroxyethyl]-5-methyluridine

5'-[[2-[(3-Carboxy-1-oxopropyl)amino]acetyl]amino]-5'-deoxyuridine

5'-[[2-(Benzoylamino)acetyl]amino]-5'-deoxyuridine

1-(5-O-Phosphono-β-D-ribofuranosyl)-2-(3-pyridinyl)-1H-benzimidazole

6-Phenyl-1-(5-O-phosphono-β-D-ribofuranosyl)-1H-benzimidazole

2-(3-Pyridinyl)-1-β-D-ribofuranosyl-1H-benzimidazole

6-Phenyl-1-β-D-ribofuranosyl-1H-benzimidazole

2'-O-Ethenyl-5-methyluridine

3',5'-O-[Bis(1,1-dimethylethyl)silylene]-2'-O-ethenyl-5-methyluridine

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

4'-C-(Aminomethyl)-2'-deoxy-2'-fluorouridine 5'-(tetrahydrogen triphosphate)

4'-C-(Azidomethyl)-2'-deoxy-2'-fluorouridine 5'-(tetrahydrogen triphosphate)