1-[5-O-(Aminosulfonyl)-2-deoxy-β-D-erythro-pentofuranosyl]-3-[(2-fluoro-4-methoxyphenyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(2,2-difluoroethyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-β-D-erythro-pentofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-methoxy-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(3-chlorophenyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(4-fluorophenyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(5-chloro-2-pyridinyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(phenylmethyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(1-methylethyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-(difluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(2,3-dihydro-1H-inden-5-yl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(2-fluorophenyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-[(4-methylphenyl)thio]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-(ethylthio)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[5-O-(Aminosulfonyl)-2-deoxy-α-L-threo-pentofuranosyl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine