5'-S-[6-[(2,6-Diamino-2,6-dideoxy-β-D-glucopyranosyl)thio]hexyl]-5'-thiouridine

8-[[[2-(4-Hydroxybutoxy)[1,1'-biphenyl]-4-yl]methyl]amino]-2'-C-methylinosine

3'-C-Ethynyl-2-fluoroadenosine

2',3'-Dideoxy-3'-methyluridine

3'-C-(Hydroxymethyl)-N-methyladenosine

2-[4-(Aminocarbonyl)-1H-pyrazol-1-yl]-N-methyladenosine

2'-Deoxy-2'-fluoro-5-methyl-3',5'-bis-O-(phenylmethyl)-2-thiouridine

2'-O-[2-[[Bis(4-methoxyphenyl)phenylmethyl]amino]ethyl]-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-2-thiouridine

2'-O-(2-Aminoethyl)-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-2-thiouridine

2'-O-[2-[2-[Bis[2-(dimethylamino)ethyl]amino]ethoxy]ethyl]-5-methyluridine

2'-O-[2-[2-[Bis[2-(dimethylamino)ethyl]amino]ethoxy]ethyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-5-methyluridine

2'-O-[2-[[2-(Dimethylamino)ethyl]thio]ethyl]-5-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-O-[2-[[2-(dimethylamino)ethyl]thio]ethyl]-5-methyluridine

2'-C-Fluorouridine

N-(Cyclopentylmethyl)-2-iodoadenosine

N-(3-Hydroxycyclopentyl)-2-iodoadenosine

2-[3-(2-Methoxyphenoxy)-1-propyn-1-yl]-N-methyladenosine

2-[3-(4-Chlorophenoxy)-1-propyn-1-yl]-N-methyladenosine

N-2-Furanyl-2-iodoadenosine

N-[(4-Fluorophenyl)methyl]-2-iodoadenosine