4-[[1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]carbonyl]benzonitrile

4-[[1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]hydroxymethyl]benzonitrile

4-[[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]carbonyl]benzonitrile

4-[[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]carbonyl]benzonitrile

Cytidine, N-acetyl-2′-O-methyl-5′-O-(9-phenyl-9H-xanthen-9-yl)-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Cytidine, N-acetyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-methyl-, 3′-[2-cyanoethyl (R)-bis(1-methylethyl)phosphoramidite]

Cytidine, N-acetyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-methyl-, 3′-[2-cyanoethyl (S)-bis(1-methylethyl)phosphoramidite]

Uridine, 2′-O-[[[1-(2-chlorophenyl)-4-piperidinyl]oxy]methyl]-

Uridine, 2′-O-[[[1-(2-chloro-4-methylphenyl)-4-piperidinyl]oxy]methyl]-

Uridine, 2′-O-[[(tetrahydro-2H-pyran-4-yl)oxy]methyl]-

Uridine, 3-benzoyl-2′-O-[(2,6-dicarboxyphenoxy)methyl]-

Uridine, 3-benzoyl-2′-O-[1-[2-(methoxycarbonyl)phenoxy]ethyl]-

Uridine, 3-benzoyl-2′-O-[1-[2-(methoxycarbonyl)phenoxy]ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 3-benzoyl-2′-O-(1-ethoxyethyl)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-O-(1-ethoxyethyl)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Adenosine, thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxy-

9H-Purin-6-amine, 9-β-D-arabinofuranosyl-, 5′→P:5′′′→P′-diester with diphosphoric acid

1-[(3′aR,5′R,6′R,6′aR)-3′a,5′,6′,6′a-Tetrahydro-6′-hydroxy-4-oxospiro[2,5-cyclohexadiene-1,2′(3′H)-furo[3,2-b]furan]-5′-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(3′aR,5′R,6′R,6′aR)-3′a,5′,6′,6′a-Tetrahydro-6′-hydroxy-4-oxospiro[2,5-cyclohexadiene-1,2′(3′H)-furo[3,2-b]furan]-5′-yl]-2,4(1H,3H)-pyrimidinedione

1-[5-Deoxy-5-(4-hydroxyphenyl)-β-D-xylofuranosyl]-5-fluoro-2,4(1H,3H)-pyrimidinedione