Cytidine, thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxy-

1,2,4-Triazine-3,5(2H,4H)-dione, 2-[2-O-[bis[2-(acetyloxy)ethoxy]methyl]-3-O-[[bis(1-methylethyl)amino]methoxyphosphino]-5-O-[1-(cyclododecyloxy)-3,3,3-trimethyl-1-[(trimethylsilyl)oxy]disiloxanyl]-β-D-ribofuranosyl]-

1,2,4-Triazine-3,5(2H,4H)-dione, 2-[2-O-[bis[2-(acetyloxy)ethoxy]methyl]-5-O-[1-(cyclododecyloxy)-3,3,3-trimethyl-1-[(trimethylsilyl)oxy]disiloxanyl]-β-D-ribofuranosyl]-

2-[2-O-[Bis[2-(acetyloxy)ethoxy]methyl]-β-D-ribofuranosyl]-1,2,4-triazine-3,5(2H,4H)-dione

Propanamide, N-[7-[3,6-anhydro-7-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-3-C-phenyl-β-D-altro-heptopyranosyl]-6,7-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[9-[3,6-anhydro-7-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-3-C-phenyl-β-D-altro-heptofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[7-[3,6-anhydro-7-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-3-C-phenyl-α-D-altro-heptofuranosyl]-6,7-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[9-[3,6-anhydro-7-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-3-C-phenyl-α-D-altro-heptofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[7-[5-O-acetyl-3,6-anhydro-2-deoxy-7-O-[(1,1-dimethylethyl)diphenylsilyl]-3-C-phenyl-β-D-altro-heptofuranosyl]-6,7-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[9-[5-O-acetyl-3,6-anhydro-2-deoxy-7-O-[(1,1-dimethylethyl)diphenylsilyl]-3-C-phenyl-β-D-altro-heptofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[7-[5-O-acetyl-3,6-anhydro-2-deoxy-7-O-[(1,1-dimethylethyl)diphenylsilyl]-3-C-phenyl-α-D-altro-heptofuranosyl]-6,7-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

Propanamide, N-[9-[5-O-acetyl-3,6-anhydro-2-deoxy-7-O-[(1,1-dimethylethyl)diphenylsilyl]-3-C-phenyl-α-D-altro-heptofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-2-methyl-

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-7,8-dihydrooxazolo[2,3-i]purin-5(3H)-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-7,8-dihydrooxazolo[2,3-i]purin-5(3H)-one

3-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-7,8-dihydrooxazolo[2,3-i]purin-5(3H)-one

Xanthosine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-6-O-(2-hydroxyethyl)-2-O-[2-(4-nitrophenyl)ethyl]-

Xanthosine, 6-O-[2-[bis(4-methoxyphenyl)phenylmethoxy]ethyl]-2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-2-O-[2-(4-nitrophenyl)ethyl]-

Xanthosine, 6-O-[2-[bis(4-methoxyphenyl)phenylmethoxy]ethyl]-2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Xanthosine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-6-O-(2-hydroxyethyl)-

Guanosine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-6-O-(2-hydroxyethyl)-