Adenosine, N-benzoyl-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-P-methylcytidylyl-(3′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, N-benzoyl-P-(4-chlorophenyl)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]cytidylyl-(3′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, N-benzoyl-P-(2-cyanoethyl)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]cytidylyl-(3′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, N-benzoyl-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-P-(phenylmethyl)cytidylyl-(3′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, N-benzoyl-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-P-(2,2,2-tribromoethyl)cytidylyl-(3′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

1H-Imidazole-4,5-dicarboxamide, 2-methyl-N5-nitro-1-(2,3,5-tri-O-nitro-β-D-ribofuranosyl)-

1H-Imidazole-4,5-dicarboxamide, N,N′,2-trimethyl-1-β-D-ribofuranosyl-

2-(Phenylmethyl)-1-β-D-ribofuranosyl-1H-imidazole-4,5-dicarboxamide

2-Phenyl-1-β-D-ribofuranosyl-1H-imidazole-4,5-dicarboxamide

2-(1-Methylethyl)-1-β-D-ribofuranosyl-1H-imidazole-4,5-dicarboxamide

2-Butyl-1-β-D-ribofuranosyl-1H-imidazole-4,5-dicarboxamide

2-Methyl-1-β-D-ribofuranosyl-1H-imidazole-4,5-dicarboxamide

4,5-Diethyl 2-(phenylmethyl)-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazole-4,5-dicarboxylate

4,5-Diethyl 2-phenyl-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazole-4,5-dicarboxylate

4,5-Dimethyl 2-(1-methylethyl)-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazole-4,5-dicarboxylate

4,5-Dimethyl 2-butyl-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazole-4,5-dicarboxylate

4,5-Dimethyl 2-ethyl-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-imidazole-4,5-dicarboxylate

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[(dimethylamino)methylene]-8-[3-[(1-pyrenylcarbonyl)amino]-1-propyn-1-yl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Guanosine, 2′-deoxy-N-[(dimethylamino)methylene]-8-[3-[(1-pyrenylcarbonyl)amino]-1-propynyl]-

2′-Deoxy-8-[3-[(1-pyrenylcarbonyl)amino]-1-propyn-1-yl]guanosine