Cytidine, N-[6-[bis(4-methoxyphenyl)phenylmethoxy]hexyl]-2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-, 5′-(4-oxopentanoate)

3′,5′-Bis-O-[(1,1-dimethylethyl)dimethylsilyl]-α-[(2-methoxyacetyl)oxy]thymidine

Cytidine, N-[6-[bis(4-methoxyphenyl)phenylmethoxy]hexyl]-2′-deoxy-5-methyl-, 5′-(4-oxopentanoate)

Cytidine, 2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(6-hydroxyhexyl)-5-methyl-, 5′-(4-oxopentanoate)

1-[2-Deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-(1,4-dioxopentyl)-β-D-erythro-pentofuranosyl]-5-methyl-4-(1H-1,2,4-triazol-1-yl)-2(1H)-pyrimidinone

Thymidine, 3′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 5′-(4-oxopentanoate)

Cytidine, N-[6-[bis(4-methoxyphenyl)phenylmethoxy]hexyl]-2′-deoxy-5-methyl-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite] 5′-(4-oxopentanoate)

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-[[1-(6-nitro-1,3-benzodioxol-5-yl)ethoxy]methyl]thymidine

Thymidine, 3-[[1-(6-nitro-1,3-benzodioxol-5-yl)ethoxy]methyl]-, 3′,5′-diacetate

3-[[1-(6-Nitro-1,3-benzodioxol-5-yl)ethoxy]methyl]thymidine

Thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyguanosine

Imidazo[4,5-c][1,2,6]thiadiazin-4(3H)-one, 1,7-dihydro-7-(5-O-phosphono-β-D-ribofuranosyl)-, 2,2-dioxide

Imidazo[4,5-c][1,2,6]thiadiazin-4(3H)-one, 1,7-dihydro-7-β-D-ribofuranosyl-, 2,2-dioxide

Methyl 5-[(aminosulfonyl)amino]-1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-1H-imidazole-4-carboxylate

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3-[6-[4-[[decahydro-1,4,7-tris[(2-nitrophenyl)sulfonyl]-1,4,7-triazecin-9-yl]oxy]phenyl]-5-hexyn-1-yl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

1,4,7-Trimethyl 9-[4-[6-[3-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-3,6-dihydro-2,6-dioxo-1(2H)-pyrimidinyl]-1-hexyn-1-yl]phenoxy]hexahydro-1,4,7-triazecine-1,4,7(8H)-triacetate

1,4,7-Trimethyl 9-[4-[6-[3-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-3,6-dihydro-2,6-dioxo-1(2H)-pyrimidinyl]-1-hexyn-1-yl]phenoxy]hexahydro-1,4,7-triazecine-1,4,7(8H)-triacetate

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3-[6-[4-[[decahydro-1,4,7-tris[(2-nitrophenyl)sulfonyl]-1,4,7-triazecin-9-yl]oxy]phenyl]-5-hexyn-1-yl]uridine

1-[2,5-Dideoxy-4-C-[(dimethoxyphosphinyl)methoxy]-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2,5-Dideoxy-4-C-[(dimethoxyphosphinyl)methoxy]-3-O-[(1,1-dimethylethyl)dimethylsilyl]-α-L-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione