6-Chloro-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-N-methyl-N-(phenylmethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[2-(2-chlorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(2-chlorophenyl)methyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-N-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(2-chlorophenyl)methyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(1R)-1-(4-fluorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(1S)-1-(4-fluorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(1R)-1-(3-fluorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(1S)-1-(3-fluorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(1R)-1-(2-fluorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(1S)-1-(2-fluorophenyl)ethyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-[(4-chlorophenyl)methyl]-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-N-[(1R)-1-phenylethyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-N-[(1S)-1-phenylethyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-N-(phenylmethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-cyclopentyl-1-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

2-Chloro-N-cyclopentyl-9-[2-deoxy-2-fluoro-5-O-[(R)-methoxy(phosphonomethyl)phosphinyl]-β-D-arabinofuranosyl]-N-methyl-9H-purin-6-amine

2-Chloro-N-cyclopentyl-9-[2-deoxy-5-O-[[(dimethoxyphosphinyl)methyl]hydroxyphosphinyl]-2-fluoro-β-D-arabinofuranosyl]-N-methyl-9H-purin-6-amine

2-Chloro-N-cyclopentyl-9-[2-deoxy-2-fluoro-5-O-[(R)-[(hydroxymethoxyphosphinyl)methyl]methoxyphosphinyl]-β-D-arabinofuranosyl]-N-methyl-9H-purin-6-amine

2-Chloro-N-cyclopentyl-9-[2-deoxy-2-fluoro-5-O-[hydroxy[(hydroxymethoxyphosphinyl)methyl]phosphinyl]-β-D-arabinofuranosyl]-N-methyl-9H-purin-6-amine

2-Chloro-N-cyclopentyl-9-[2-deoxy-2-fluoro-5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-arabinofuranosyl]-N-methyl-9H-purin-6-amine