2′,3′-Dideoxy-3′-[[(2S)-2-[[(1,1-dimethylethoxy)carbonyl]amino]-3-(4-methoxyphenyl)-1-oxopropyl]amino]-2′-fluoro-N-(triphenylmethyl)-5′-O-(triphenylmethyl)adenosine

3′-Azido-2′,3′-dideoxy-2′-fluoro-N-(triphenylmethyl)-5′-O-(triphenylmethyl)adenosine

9-[2,3-Anhydro-5-O-(triphenylmethyl)-β-D-lyxofuranosyl]-N-(triphenylmethyl)-9H-purin-6-amine

9-[3-Azido-3-deoxy-5-O-(triphenylmethyl)-β-D-arabinofuranosyl]-N-(triphenylmethyl)-9H-purin-6-amine

Thymidine, 3′-azido-3′-deoxy-, 5′-[hydrogen P-[[(2-aminoethyl)amino]carbonyl]phosphonate]

Cytidylyl-(3'→5')-3'-[[(2S)-2-amino-3-(4-methoxyphenyl)-1-oxopropyl]amino]-2',3'-dideoxy-2'-fluoroadenosine

Thymidine, 3′-azido-3′-deoxy-, 5′-[hydrogen P-[[[2-(dimethylamino)ethyl]amino]carbonyl]phosphonate]

Adenosine, N-(triphenylmethyl)-5′-O-(triphenylmethyl)-, 2′,3′-bis(1,1,1-trifluoromethanesulfonate)

Thymidine, 3′-azido-3′-deoxy-, 5′-[hydrogen P-[[[2-(trimethylammonio)ethyl]amino]carbonyl]phosphonate], inner salt

Thymidine, 3′-azido-3′-deoxy-, 5′-[hydrogen P-(2-aminoethyl)phosphonate]

Adenylyl-(2′→5′)-adenylyl-(2′→5′)-adenylyl-(3′→5′)-adenosine

9-(2-Deoxy-β-D-erythro-pentofuranosyl)-9H-purine-6-ethanol

9-β-D-Ribofuranosyl-9H-purine-6-ethanol

2′-Deoxy-1-[[2-hydroxy-6-(3-quinolinyl)phenyl]methyl]guanosine

Ethyl 9-(2-deoxy-β-D-erythro-pentofuranosyl)-9H-purine-6-acetate

9-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-9H-purine-6-ethanol

9-[2,3,5-Tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purine-6-ethanol

Ethyl 9-[2-deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-9H-purine-6-acetate

Ethyl 9-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-9H-purine-6-acetate

Ethyl 9-[2,3,5-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purine-6-acetate