5'-Deoxy-5'-fluoro-2'-O-(2-methoxyethyl)-5-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-3'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-fluoro-5-methyl-2-thiouridine

5-[3-[[[[3,5-Bis(trifluoromethyl)phenyl]amino]carbonyl]amino]-1-propen-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

2'-O-(2-Methoxyethyl)-5-methyl-5'-O-methyluridine

2'-O-[2-[[[2-(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyl]amino]oxy]ethyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyluridine

2'-O-[2-[[[2-(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)ethylidene]amino]oxy]ethyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyluridine

3'-Amino-N-benzoyl-2',3'-dideoxy-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methylcytidine

2'-O-[2-[[[2-(Dimethylamino)ethylidene]amino]oxy]ethyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyluridine

2'-O-[2-[[[2-(Dimethylamino)ethyl]amino]oxy]ethyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyluridine

3',5'-O-(Dimethylsilylene)-5-methyluridine

(2'R)-N-Benzoyl-2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoro-2'-methylcytidine

(2'R)-N-Benzoyl-2'-deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoro-2'-methylcytidine

3'-Amino-N-benzoyl-2',3'-dideoxycytidine

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

3',5'-O-(Diethylsilylene)-5-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-2'-[methyl(1-pyrenylmethyl)amino]-2-thiouridine

6-S-(2-Cyanoethyl)-2'-deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-phenoxyacetyl)-6-thioguanosine

3'-Azido-2',3'-dideoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2-thiouridine

Glycine, N-(1-oxo-2-propylpentyl)-, 5'-ester with 5-fluorouridine

2'-O-[2-[(Aminocarbonyl)amino]cyclohexyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-5-methyluridine