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

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

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

5-Chloro-N-cyclopentyl-3-[2-deoxy-2-fluoro-5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-arabinofuranosyl]-3H-imidazo[4,5-b]pyridin-7-amine

5-Chloro-N-cyclopentyl-3-[5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-ribofuranosyl]-3H-imidazo[4,5-b]pyridin-7-amine

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

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

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

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

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

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

6-Chloro-1-[2-deoxy-2-fluoro-5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-arabinofuranosyl]-N-[(1R)-1-phenylethyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-1-[2-deoxy-2-fluoro-5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-arabinofuranosyl]-N-[(1S)-1-phenylethyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-1-[2-deoxy-2-fluoro-5-O-[hydroxy(phosphonomethyl)phosphinyl]-β-D-arabinofuranosyl]-N-(phenylmethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-1-[5-O-[1-hydroxy-9-methyl-3-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1,3-dioxido-7-oxo-4,6,8-trioxa-1,2-diphosphadec-1-yl]-β-D-ribofuranosyl]-N-[(1S)-1-phenylethyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

6-Chloro-N-cyclopentyl-1-[5-O-[1-hydroxy-9-methyl-3-[[[(1-methylethoxy)carbonyl]oxy]methoxy]-1,3-dioxido-7-oxo-4,6,8-trioxa-1,2-diphosphadec-1-yl]-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

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

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

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

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