5'-S-(2-Methoxy-2-oxoethyl)-2',3'-O-(1-methylethylidene)-5'-thiouridine

5'-[(Carboxymethyl)sulfonyl]-5'-deoxyuridine

N-(2-Aminoethyl)-2'-deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methylcytidine

5,6-Dichloro-2-(methylsulfonyl)-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-(methylthio)-1-β-D-ribofuranosyl-1H-benzimidazole

N-[2-[[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-1,2-dihydro-5-methyl-2-oxo-4-pyrimidinyl]amino]ethyl]-2'-deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methylcytidine

N-[2-[[1-[3-O-Acetyl-5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-1,2-dihydro-5-methyl-2-oxo-4-pyrimidinyl]amino]ethyl]-2'-deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methylcytidine

5,6-Dichloro-2-[[(4-fluorophenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

2-[[(4-Bromophenyl)methyl]thio]-5,6-dichloro-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-[[(4-chlorophenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-(2-propen-1-ylthio)-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-(2-propyn-1-ylthio)-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-[[[4-(1,1-dimethylethyl)phenyl]methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-1-β-D-ribofuranosyl-2-[[[3-(trifluoromethyl)phenyl]methyl]thio]-1H-benzimidazole

5,6-Dichloro-2-[[(3-nitrophenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-[[(4-nitrophenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-[[(3-methylphenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-[[(2-chlorophenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-[[(3-chlorophenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole

5,6-Dichloro-2-[[(3,4-dichlorophenyl)methyl]thio]-1-β-D-ribofuranosyl-1H-benzimidazole