5-[(1E)-3-Amino-3-oxo-1-propen-1-yl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

2'-O-[2-[(6-Azido-1-oxohexyl)amino]ethyl]-5-methyluridine

2'-O-(2-Azidoethyl)-5-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-[(3-carboxy-1-oxopropyl)amino]-2'-deoxyuridine

3'-Deoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2'-S-phenyl-2'-C-(phenylthio)-2'-thiouridine

2'-[(4-Amino-1,4-dioxobutyl)amino]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

3'-Deoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-S-phenyl-2'-C-(phenylthio)-2'-thiouridine

1H-Benzimidazole, 1-[3,5-O-(mercaptophosphinylidene)-β-D-ribofuranosyl]-, (S)-

2'-Deoxy-3'-thioguanosine

3',3'''-Dithiobis[2',3'-dideoxycytidine]

3',3'''-Dithiobis[2',3'-dideoxyuridine]

2'-Deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-iodouridine

3'-Deoxy-3'-[(spiro[2H-benzimidazole-2,1'-cyclohexan]-4'-ylcarbonyl)amino]thymidine

5-Formyl-2',3'-O-(1-methylethylidene)-2-thiouridine

(2'R)-2'-Cyano-2'-deoxy-6-O-ethyl-2'-methylguanosine

(2'R)-2'-Cyano-2'-deoxy-2'-methyluridine

(2'R)-2'-Cyano-2'-deoxy-2'-methylcytidine

(2'R)-N-Acetyl-2'-cyano-2'-deoxy-2'-methylcytidine

2'-Deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-6-thioguanosine

(2'R)-2'-Cyano-2'-deoxy-2'-methyluridine 5'-(tetrahydrogen triphosphate)