5-[3-[[6-[[6-[[[6-[[6-(Aminocarbonyl)-3,6,7,8-tetrahydrobenzo[1,2-b:4,3-b']dipyrrol-2-yl]carbonyl]-3,6,7,8-tetrahydrobenzo[1,2-b:4,3-b']dipyrrol-2-yl]carbonyl]amino]-1-oxohexyl]amino]hexyl]amino]-3-oxo-1-propen-1-yl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

5-[6-[1-[(2-Boronophenyl)methyl]-1H-1,2,3-triazol-4-yl]-1-hexyn-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

5-[6-[1-[(3-Boronophenyl)methyl]-1H-1,2,3-triazol-4-yl]-1-hexyn-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

5-[3-[[3-[1-[(2-Boronophenyl)methyl]-1H-1,2,3-triazol-4-yl]-1-oxopropyl]amino]-1-propyn-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

5-[3-[[3-[1-[(3-Boronophenyl)methyl]-1H-1,2,3-triazol-4-yl]-1-oxopropyl]amino]-1-propyn-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

1-[2-Deoxy-3,5-bis-O-[(4-methylphenyl)sulfonyl]-β-D-erythro-pentofuranosyl]-1H-benzimidazole

5-[6-(Benzoylthio)-1-hexyn-1-yl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

5-[6-(Benzoylthio)-1-hexyn-1-yl]-2'-deoxyuridine

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-3-O-(phenoxythioxomethyl)-β-D-erythro-pentofuranosyl]-1H-benzimidazole

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-1H-benzimidazole

3'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-O-(2-methoxyethyl)-5-methyluridine

5'-O-[(1,1-Dimethylethyl)dimethylsilyl]-2'-O-(2-methoxyethyl)-5-methyluridine

1H-Benzimidazole, 1-[5-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]tetrahydro-2-furanyl]-, (2R-cis)-

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-[8-(7-[2,2'-bithiophen]-5-yl-3H-imidazo[4,5-b]pyridin-3-yl)-1-octyn-1-yl]-2'-deoxyuridine

5-[8-(7-[2,2'-Bithiophen]-5-yl-3H-imidazo[4,5-b]pyridin-3-yl)-1-octyn-1-yl]-2'-deoxyuridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-3'-O-[(1,1-dimethylethyl)diphenylsilyl]-2'-O-(2-methoxyethyl)-5-methyluridine

2'-Deoxy-2'-fluoro-6-O-methylguanosine

2-Hydrazinyl-2'-C-methyladenosine

3'-O-[(1,1-Dimethylethyl)dimethylsilyl]-2'-O-[(2S)-2-methoxypropyl]-5-methyluridine

5'-Deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-iodo-2'-O-(2-methoxyethyl)-3-[(4-methoxyphenyl)methyl]-5-methyluridine