9-[3,5-O-[Bis(1,1-dimethylethyl)silylene]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-6-[6-(phenylmethoxy)-2-naphthalenyl]-9H-purine

6-Benzo[b]thien-2-yl-9-[3,5-O-[bis(1,1-dimethylethyl)silylene]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purine

2-Cyanoethyl 3-[9-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purin-6-yl]benzoate

2-Cyanoethyl 3-[9-[3,5-O-[bis(1,1-dimethylethyl)silylene]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purin-6-yl]benzoate

N′-[3-[9-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purin-6-yl]phenyl]-N,N-dimethylmethanediamine

N′-[3-[9-[3,5-O-[Bis(1,1-dimethylethyl)silylene]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-9H-purin-6-yl]phenyl]-N,N-dimethylmethanediamine

3-[[9-(2-Deoxy-5-O-phosphono-β-D-erythro-pentofuranosyl)-9H-purin-6-yl]thio]benzoic acid

1-[[[9-(2-Deoxy-5-O-phosphono-β-D-erythro-pentofuranosyl)-9H-purin-6-yl]thio]methyl]cyclopropaneacetic acid

N-[3-[Bis[2-(phosphonooxy)ethyl]amino]propyl]-2′-deoxy-5′-adenylic acid

N-[3-[3,5-Bis[(phosphonooxy)methyl]phenyl]-2-propyn-1-yl]-2′-deoxy-5′-adenylic acid

N-[2-[Bis[2-(phosphonooxy)ethyl]amino]ethyl]-2′-deoxy-5′-adenylic acid

3-[9-(2-Deoxy-5-O-phosphono-β-D-erythro-pentofuranosyl)-9H-purin-6-yl]benzenebutanoic acid

3-[[9-(2-Deoxy-5-O-phosphono-β-D-erythro-pentofuranosyl)-9H-purin-6-yl]amino]-1-propanesulfonic acid

3-[[9-(2-Deoxy-5-O-phosphono-β-D-erythro-pentofuranosyl)-9H-purin-6-yl]thio]benzeneacetic acid

3-[[[9-(2-Deoxy-5-O-phosphono-β-D-erythro-pentofuranosyl)-9H-purin-6-yl]amino]methyl]benzoic acid

2′-Deoxy-6-O-[[3-nitro-5-[(phosphonooxy)methyl]phenyl]methyl]-5′-inosinic acid

6-O-[[3,5-Bis[(phosphonooxy)methyl]phenyl]methyl]-2′-deoxy-5′-inosinic acid

9-(2-Deoxy-5-O-phosphono-β-D-erythro-pentofuranosyl)-6-[(1E)-2-phenylethenyl]-N-(phenylmethyl)-9H-purin-8-amine

2′-Deoxy-6-S-[6-(phosphonooxy)hexyl]-6-thio-5′-inosinic acid

2′-Deoxy-N-[3-[2-(phosphonooxy)ethoxy]phenyl]-5′-adenylic acid