Adenosine, 3'-deoxy-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-4'-C-[(triethylsilyl)ethynyl]-

7-[3,5-Bis-O-[(2,4-dichlorophenyl)methyl]-2-C-methyl-β-D-ribofuranosyl]-5-ethynyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-[3,5-Bis-O-[(2,4-dichlorophenyl)methyl]-2-C-methyl-β-D-ribofuranosyl]-4-chloro-5-ethynyl-7H-pyrrolo[2,3-d]pyrimidine

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 7-[3,5-bis-O-[(2,4-dichlorophenyl)methyl]-2-C-methyl-β-D-ribofuranosyl]-5-(phenylethynyl)-

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 7-[3,5-bis-O-[(2,4-dichlorophenyl)methyl]-2-C-methyl-β-D-ribofuranosyl]-5-[(trimethylsilyl)ethynyl]-

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 5-[(4-fluorophenyl)ethynyl]-7-[5-O-[hydroxy(phosphonooxy)phosphinyl]-2-C-methyl-β-D-ribofuranosyl]-

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 7-[5-O-[hydroxy(phosphonooxy)phosphinyl]-2-C-methyl-β-D-ribofuranosyl]-5-(phenylethynyl)-

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 5-[(4-methylphenyl)ethynyl]-7-(2-C-methyl-5-O-phosphono-β-D-ribofuranosyl)-

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 5-[(4-fluorophenyl)ethynyl]-7-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-2-C-methyl-β-D-ribofuranosyl]-

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 7-[5-O-[hydroxy(phosphonooxy)phosphinyl]-2-C-methyl-β-D-ribofuranosyl]-5-[(4-methylphenyl)ethynyl]-

Uridine, 3'-C-ethynyl-4'-C-[[(methylsulfonyl)oxy]methyl]-3'-O-(phenylmethyl)-, 5'-methanesulfonate

7H-Pyrrolo[2,3-d]pyrimidin-4-amine, 7-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-2-C-methyl-β-D-ribofuranosyl]-5-[(4-methylphenyl)ethynyl]-

Adenosine, 2'-deoxy-8-[(9,10-dihydro-9,10-dioxo-2-anthracenyl)ethynyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-

8-Bromo-N,N-diethylguanosine

Cytidine, 2'-deoxy-5-(phenylethynyl)-

Adenosine, N-benzoyl-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-8-(9H-fluoren-2-ylethynyl)-

Adenosine, N-benzoyl-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-8-(1-pyrenylethynyl)-, 3'-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

4H-Pyrrolo[2,3-d]pyrimidin-4-one, 2-amino-7-(2-deoxy-β-D-erythro-pentofuranosyl)-1,7-dihydro-5-(phenylethynyl)-

Adenosine, N-benzoyl-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-8-(1-pyrenylethynyl)-

Adenosine, N-benzoyl-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-8-(9H-fluoren-2-ylethynyl)-, 3'-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]