2'-Azido-2',3'-dideoxyguanosine

2',3'-Anhydro-N-benzoyladenosine

5'-[Bis[2-[bis[2-(1,1-dimethylethoxy)-2-oxoethyl]amino]ethyl]amino]-5'-deoxyuridine

5-[2-(6-Amino-9-ethyl-9H-purin-8-yl)ethynyl]-2'-deoxyuridine

N-Methyl-6-thioguanosine

N,N-Dimethyl-6-thioguanosine

2'-O-Methylguanylyl-(3'→2')-8,9-didehydro-9-de-β-D-ribofuranosyl-7,8-dihydro-9-[[[2-hydroxy-1-(hydroxymethyl)ethyl]amino]methyl]-9-deazaadenylyl-(1'→5')-2'-O-methylguanylyl-(3'→5')-2'-O-methyladenosine

N-[[[trans-4-[(1,4-Dioxopentyl)oxy]cyclohexyl]amino]carbonyl]-2'-O-methyladenosine

6-S-[(3-Bromophenyl)methyl]-6-thioguanosine

5'-Deoxy-5'-[(2S)-2-[(2S,3S,4R,5R)-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3,4-dihydroxy-2-furanyl]-4-oxo-3-thiazolidinyl]-5-methyluridine

5'-Deoxy-5'-[(2R)-2-[(2S,3S,4R,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3,4-dihydroxy-2-furanyl]-4-oxo-3-thiazolidinyl]-5-methyluridine

5'-Deoxy-5'-[(2S)-2-[(2S,3S,4R,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3,4-dihydroxy-2-furanyl]-4-oxo-3-thiazolidinyl]-5-methyluridine

2'-O-Methylguanylyl-(3'→4')-8,9-didehydro-9-de-β-D-ribofuranosyl-7,8-dihydro-9-[[(3R,4R)-3-hydroxy-4-(hydroxymethyl)-1-pyrrolidinyl]methyl]-9-deazaadenylyl-(3'→5')-2'-O-methylguanylyl-(3'→5')-2'-O-methyladenosine

5'-Deoxy-5'-[(2R)-2-[(2S,3S,4R,5R)-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3,4-dihydroxy-2-furanyl]-4-oxo-3-thiazolidinyl]-5-methyluridine

3',5'-Bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[[[trans-4-[(1,4-dioxopentyl)oxy]cyclohexyl]amino]carbonyl]-2'-O-methyladenosine

3',5'-Bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[[(trans-4-hydroxycyclohexyl)amino]carbonyl]-2'-O-methyladenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-N-[[[trans-4-[(1,4-dioxopentyl)oxy]cyclohexyl]amino]carbonyl]-2'-O-methyladenosine

3'-De(phosphinicooxy)thymidylylimino(6-chloro-1,3,5-triazine-2,4-diyl)imino-(3'→5')-5'-deoxy-5-methyluridine

5',5'''-[(6-Chloro-1,3,5-triazine-2,4-diyl)diimino]bis[5'-deoxyuridine]

5',5'''-[(6-Chloro-1,3,5-triazine-2,4-diyl)diimino]bis[5'-deoxy-5-methyluridine]