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

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

5-Bromo-7-(2-deoxy-β-D-erythro-pentofuranosyl)-4-methoxy-2-(methylthio)-7H-pyrrolo[2,3-d]pyrimidine

5-Chloro-7-(2-deoxy-β-D-erythro-pentofuranosyl)-4-methoxy-2-(methylthio)-7H-pyrrolo[2,3-d]pyrimidine

5-Bromo-7-(2-deoxy-β-D-erythro-pentofuranosyl)-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

5-Chloro-7-(2-deoxy-β-D-erythro-pentofuranosyl)-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

7-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-5-iodo-4-methoxy-7H-pyrrolo[2,3-d]pyrimidine

5-Bromo-7-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-4-methoxy-7H-pyrrolo[2,3-d]pyrimidine

5-Chloro-7-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-4-methoxy-7H-pyrrolo[2,3-d]pyrimidine

Adenosine, P-(2-cyanoethyl)-3′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]adenylyl-(2′→5′)-3′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 2′-[2-(4-nitrophenyl)ethyl carbonate]

Adenosine, P-(2-cyanoethyl)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]adenylyl-(2′→5′)-3′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 2′-[2-(4-nitrophenyl)ethyl carbonate]

Adenosine, P-(2-cyanoethyl)-3′-deoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]adenylyl-(2′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-

Adenosine, 3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-P-[2-(4-nitrophenyl)ethyl]adenylyl-(2′→5′)-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-

Adenosine, 5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-5′-[(1-oxohexadecyl)amino]-, 2′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, 3′-deoxy-5′-O-[(4-methoxyphenyl)diphenylmethyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 2′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, 3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-, 2′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, 3′,5′-dideoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-5′-[(1-oxohexadecyl)amino]-, 2′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, 3′,5′-dideoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-5′-[[[2-(4-nitrophenyl)ethoxy]carbonyl]amino]-, 2′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Adenosine, 3′,5′-dideoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-5′-[(1-oxohexadecyl)amino]-

Adenosine, 5′-amino-3′,5′-dideoxy-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-