6-Chloro-1-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl]-2,4(1H,3H)-quinazolinedione

5-Chloro-1-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl]-2,4(1H,3H)-quinazolinedione

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl]-5-fluoro-2,4(1H,3H)-quinazolinedione

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

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

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

Guanosine, N-(2-methyl-1-oxopropyl)-2′-O-octadecyl-

Guanosine, 2′-O-octadecyl-

Adenosine, 2-amino-2′-O-octadecyl-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-N-(2-methyl-1-oxopropyl)-2′-O-nonyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)thymidylylmethylene-1H-1,2,3-triazole-5,1-diyl-(3′→5′)-5′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 3′-de(phosphinicooxy)thymidylylmethylene-1H-1,2,3-triazole-5,1-diyl-(3′→5′)-5′-deoxy-

Thymidine, 3′-de(phosphinicooxy)-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-3-[(phenylmethoxy)methyl]thymidylylmethylene-1H-1,2,3-triazole-5,1-diyl-(3′→5′)-5′-deoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-3-[(phenylmethoxy)methyl]-

Thymidine, 5′-azido-5′-deoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-3-[(phenylmethoxy)methyl]-

Thymidine, 3′-deoxy-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-3-[(phenylmethoxy)methyl]-3′-[2-oxo-3-(triphenylphosphoranylidene)propyl]-

Thymidine, 3′-deoxy-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-3′-(2-methoxy-2-oxoethyl)-3-[(phenylmethoxy)methyl]-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)thymidylyl-1H-1,2,3-triazole-1,5-diylmethylene-(3′→5′)-5′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 3′-de(phosphinicooxy)thymidylyl-1H-1,2,3-triazole-1,5-diylmethylene-(3′→5′)-5′-deoxy-

Thymidine, 3′-de(phosphinicooxy)-5′-O-[dimethyl(1,1,2-trimethylpropyl)silyl]-3-[(phenylmethoxy)methyl]thymidylyl-1H-1,2,3-triazole-1,5-diylmethylene-(3′→5′)-5′-deoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-3-[(phenylmethoxy)methyl]-

Thymidine, 3′-azido-3′-deoxy-5′-O-[dimethyl(1,1,2-trimethylpropyl)silyl]-3-[(phenylmethoxy)methyl]-