(2'R)-N-[Bis(4-methoxyphenyl)phenylmethyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-2'-fluoro-2'-methyl-6-O-methylguanosine

2-Amino-N-cyclopentyl-2'-C-methyladenosine

5'-[(4-Butylbenzoyl)amino]-5'-deoxyuridine

5'-[(2-Bromo-1-oxohexadecyl)amino]-5'-deoxyuridine

(2'R)-5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-2'-fluoro-2'-methyl-6-O-methylguanosine

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

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4-S-(2-cyanoethyl)-5-fluoro-3'-O-methyl-4-thiouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4-S-(2-cyanoethyl)-5-fluoro-2'-O-methyl-4-thiouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4-S-(2-cyanoethyl)-5-fluoro-4-thiouridine

6-O-(3-Methoxypropyl)-2'-C-methylguanosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4-S-(2-cyanoethyl)-2',3'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-fluoro-4-thiouridine

5-[[[2-(2,3-Dihydro-2-oxo-1H-benzimidazol-1-yl)ethyl]amino]carbonyl]-2'-O-methyluridine

5-[[[(4-Fluorophenyl)methyl]amino]carbonyl]-2'-O-methyluridine

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

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

5'-[[Bis(4-fluorophenyl)methyl]amino]-2',5'-dideoxyuridine

5-[3-[[6-[[6-[[[6-[[6-(Aminocarbonyl)-3,6,7,8-tetrahydrobenzo[1,2-b:4,3-b']dipyrrol-2-yl]carbonyl]-3,6,7,8-tetrahydrobenzo[1,2-b:4,3-b']dipyrrol-2-yl]carbonyl]amino]-1-oxohexyl]amino]hexyl]amino]-3-oxo-1-propen-1-yl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

5-[6-(Benzoylthio)-1-hexyn-1-yl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

5-[6-(Benzoylthio)-1-hexyn-1-yl]-2'-deoxyuridine

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-3-O-(phenoxythioxomethyl)-β-D-erythro-pentofuranosyl]-1H-benzimidazole