2'-[[(2S)-2-Amino-3-carboxy-1-oxopropyl]amino]-2'-deoxyuridine

6-Chloro-2-(methylthio)-1-β-D-ribofuranosyl-1H-benzimidazole

6-Chloro-2-methoxy-1-β-D-ribofuranosyl-1H-benzimidazole

6-Chloro-1,3-dihydro-1-β-D-ribofuranosyl-2H-benzimidazole-2-thione

1H-Benzimidazole, 6-chloro-1-β-D-ribofuranosyl-2-[(phenylmethyl)thio]-

6-Cyano-2-C-methyluridine

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

2'-S-(1-Pyrenylmethyl)-2'-thiouridine

N-[(1S)-2-Amino-1-(hydroxymethyl)-2-oxoethyl]-2-chloroadenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-3'-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2'-deoxy-4-O-methyluridine

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

3'-O-[(1,1-Dimethylethyl)dimethylsilyl]-2'-C-hydroxy-2'-O-methyluridine

3'-Deoxy-3'-[[N-[(9H-fluoren-9-ylmethoxy)carbonyl]-O-methyl-L-tyrosylglycyl]amino]-N,N-dimethyladenosine

2'-O-[(1,1-Dimethylethyl)dimethylsilyl]-2'-C-methyladenosine

3',5'-O-[Bis(1,1-dimethylethyl)silylene]-2'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-C-methyladenosine

5'-O-[[Bis[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]phosphinyl]methyl]-3'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-O-(2-methoxyethyl)-5-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-N-[[bis(2-methylpropyl)amino]methylene]-2'-deoxy-5-iodocytidine

2'-Deoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-iodo-3'-O-methyluridine

Glycine, N-acetyl-, 3'-ester with 2'-deoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-5-fluorouridine

5'-O-[[Bis[2-[(2,2-dimethyl-1-oxopropyl)thio]ethoxy]phosphinyl]methyl]-2'-O-(2-methoxyethyl)-5-methyluridine