5'-S-[2-(Acetylamino)ethyl]-N-[[4-[[(4-methylphenyl)sulfonyl]amino]phenyl]methyl]-5'-thioadenosine

5'-S-[2-(Acetylamino)ethyl]-N-[[4-[(methylsulfonyl)amino]phenyl]methyl]-5'-thioadenosine

5'-S-[2-(Acetylamino)ethyl]-N-[2-(4-nitrophenyl)ethyl]-5'-thioadenosine

5'-S-[2-(Acetylamino)ethyl]-N-ethyl-N-[(3-nitrophenyl)methyl]-5'-thioadenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-O-[2-methoxy-1-(methoxymethyl)ethyl]-5-methyluridine

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

5'-O-[(1,1-Dimethylethyl)dimethylsilyl]-2',3'-O-(methoxymethylene)-N-[(4-methoxyphenyl)diphenylmethyl]-2'-C-methyladenosine

3'-O-[8-[[(2S)-2-Amino-3-azido-1-oxopropyl]amino]octyl]-N-benzoyladenosine

5-[3-[[4-Chloro-6-[[2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoyl]amino]-1,3,5-triazin-2-yl]amino]-1-propyn-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

N-Acetyl-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-O-[(1,1-dimethylethyl)dimethylsilyl]-N-methylcytidine

N-Acetyl-2'-O-[(1,1-dimethylethyl)dimethylsilyl]-N-methylcytidine

2',3'-O-(Methoxymethylene)-N-[(4-methoxyphenyl)diphenylmethyl]-2'-C-methyladenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4'-C-[(benzoyloxy)methyl]-2'-O-methyluridine

4'-C-[(Benzoyloxy)methyl]-2'-O-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-[7-[[6-[[5-[[2-[bis[2-[(2,2,2-trifluoroacetyl)amino]ethyl]amino]ethyl]amino]-9,10-dihydro-9,10-dioxo-1-anthracenyl]amino]hexyl]amino]-7-oxo-1-heptyn-1-yl]-2'-deoxyuridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4'-C-[(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl]-2'-O-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-4'-C-(hydroxymethyl)-2'-O-methyluridine

4'-C-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-O-methyluridine

4'-C-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-O-methyluridine

4'-C-(Hydroxymethyl)-2'-O-methyluridine