1,1-Dimethylethyl (2R)-2-[[[1-(2-deoxy-2,2-difluoro-β-D-erythro-pentofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinyl]amino]carbonyl]-1-pyrrolidinecarboxylate

(2′S)-2′-Chloro-2′-deoxy-2′-fluoro-5′-O-[(4-methoxyphenyl)diphenylmethyl]uridine

5-Amino-1-(2,3,5-tri-O-acetyl-β-L-ribofuranosyl)pyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione

5-Amino-1-β-L-ribofuranosylpyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-[2-[(1,1-dimethylethyl)dithio]ethyl]-, 3′-[(S)-2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-[2-[(1,1-dimethylethyl)dithio]ethyl]-, 3′-[(R)-2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-[2-[(1,1-dimethylethyl)dithio]ethyl]-, 3′-(4-nitrophenyl butanedioate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-[2-[(1,1-dimethylethyl)dithio]ethyl]-, 3′-(hydrogen butanedioate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-[2-[(1,1-dimethylethyl)dithio]ethyl]-

6-Azido-9-(2,3-dideoxy-2-fluoro-β-D-threo-pentofuranosyl)-9H-purine

Adenosine, N-(9,10-dihydro-2,5,11-trimethyl-9-oxo-6H-pyrido[4,3-b]carbazolium-10-yl)-

1-[3,5-Bis-O-[(2,4-dichlorophenyl)methyl]-2-O-(2-methoxyethyl)-α-D-ribofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Guanosine, 2′-deoxy-N-(2-furanylmethyl)-, 3′,5′-diacetate

Guanosine, 2′-deoxy-N-(2-furanylmethyl)-6-O-[2-(4-nitrophenyl)ethyl]-, 3′,5′-diacetate

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-, 3′-[4-[2-[[1,1-dimethyl-3-(2-propyn-1-yloxy)propyl]dithio]phenyl]butyl N,N-bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-, 3′-[2-[2-[(1-methyl-1H-tetrazol-5-yl)dithio]phenyl]ethyl N,N-bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-, 3′-[2-[2-[(1-methyl-1H-imidazol-2-yl)dithio]phenyl]ethyl N,N-bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-, 3′-[2-[5-[(1,1-dimethylethyl)dithio]-1H-tetrazol-1-yl]ethyl N,N-bis(1-methylethyl)phosphoramidite]

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-methyl-N-(2-methyl-1-oxopropyl)-, 3′-[2-[2-[(1,1-dimethylethyl)dithio]phenyl]ethyl N,N-bis(1-methylethyl)phosphoramidite]

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