Substituted pyrazolo [3,4-d] pyrimidines and methods of using the same

A compound is selected from the group consisting of:

• 6-(2-Chloro-phenoxy)-3-(2-chloro-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-phenoxy-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(2-fluoro-phenoxy)-1H-pyrazol[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-p-tolyloxy-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(3,4-dichloro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(3,4-dichloro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Fluoro-phenoxy)-3-(4-fluoro-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(4-Fluoro-phenyl)-6-(4-methoxy-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(4-fluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(4-methoxy-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(2-trifluoromethyl-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-cyclohexyloxy-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-morpholin-4-yl-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Chloro-phenoxy)-3-(3-fluoro-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Chloro-phenoxy)-3-(4-methoxy-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Chloro-phenoxy)-3-(3-trifluoromethyl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Chloro-phenoxy)-3-pyridin-3-yl-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(4-trifluoromethyl-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Chloro-phenoxy)-3-(4-pyridin-2-yl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Chloro-phenoxy)-3-thiophen-2-yl-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(Benzo[1,3]dioxol-5-yloxy)-3-(2-chloro-phenyl)-1H-pyrazolo[3,4-d]pyrirnidine;
• 3-(2-Chloro-phenyl)-6-(2,4-difluoro-phenylsulfanyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(4-fluoro-phenylsulfanyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(2-fluoro-phenylsulfanyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-phenylsulfanyl-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(3-morpholin-4-yl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 4-[6-(2,4-Difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenol;
• 3-(4-Benzyloxy-phenyl)-6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d ]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-[3-(4-methyl-piperazin-1-yl)-phenyl]-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(4-morpholin-4-yl-phenyl)-1H-pyrazolo[3,4-d]pyrimidinc;
• 3-(2-Chloro-phenyl)-6-(2,4-difluoro-benzenesulfonyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(2,4-difluoro-benzenesulfinyl)-1H-pyrazolo[3,4-d]pyriniidine;
• {3-[6-(2,4-Difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenyl}-(2-methoxy-ethyl)-methyl-amine;
• 6-(2,4-Difluoro-phenoxy)-3-(4-isopropoxy-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-[3-(2-pyridin-2-yl-ethoxy)-phenyl]-1H-pyrazolo[3,4-d]pyrimidine;
• 4-[6-(2,4-Difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenylamine;
• 6-(2,4-Difluoro-phenoxy)-3-[4-(4-methyl-piperazin-1-yl)-phenyl]-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(4-Bromo-phenyl)-6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2-Chloro-phenoxy)-3-(2-fluoro-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(2,4-difluoro-phenoxy)-1-methyl-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-phenyl)-6-(2,4-difluoro-benzyloxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3(2-Chloro-phenyl)-6-(3-fluoro-phenylsulfanyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(3-Benzyloxy-phenyl)-6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(2-methylsulfanyl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-o-tolyl-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(4-methoxy-2-methyl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-{4-[6-(2,4-Difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-3-methyl-phenoxy}-propane-1,2-diol;
• 3-(2-Chloro-4-methoxy-phenyl)-6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(3-methyl-pyridin-2-yl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(2-fluoro-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(2-fluoro-5-methoxy-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(4-fluoro-2-methyl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(2,4-dimethyl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(2-fluoro-4-morpholin4-phenyl)-1H -pyrazolo[3,4-d]pyrimidine;
• 3-(4-Bromo-2-fluoro-phenyl)-6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-(2-Chloro-4-methyl-phenyl)-6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(2-methylsulfanyl-phenyl]1H-pyrazolo[3,4-d]pyrimidine;
• 6-(2,4-Difluoro-phenoxy)-3-(2-fluoro-6-methoxy-phenyl)-1H-pyrazolo[3,4-d]pyrimidine;
• 4-[6-(2,4-Difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]3-methyl-phenol;
• 3-{4-[6-(2,4-Difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-3-methyl-phenoxy}-propane-1,2-diol;
• 2- {4-[6-(2,4-Difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-3-methyl-phenoxy}-ethanol;
• 3-{3-Chloro-4-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy}-propane-1,2-diol;
• 3-Chloro-4-(6-(2,4-difluoro-phenoxy)- 1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenol;
• 2-{3-Chloro-4-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy}-ethanol;
• 6-(2,4-Difluoro-phenoxy)-3-styryl]-1H-pyrazolo[3,4-d]pyrimidine;
• 3-[2-Chloro-4-(2-morpholin-4-yl-ethoxy)-phenyl]-6-(2,4-difluoro-phenoxy)-1H -pyrazolo[3,4-d]pyrimidine;
• (2-{3-Chloro-4-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy}-ethyl)-dimethyl-armine;
• 4-{3-Chloro-4-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy)-butane-1,2-diol;
• 3-(2-Chloro-4-morpholin-4-ylmethyl-phenyl)-6-(2,4-difluoro-phenoxy)-1H -pyrazolo[3,4-d]pyrimidine;
• 2-{3-Chloro-4-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-benzylamino}-propan-1-ol;
• 3-{4-Chloro-3-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy}-propane-1,2-diol;
• 4-Chloro-3-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenol;
• 2-{4-Chloro-3-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy)-ethanol;
• {3-Chloro-4-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenyl)-methanol;
• 3-{4-Chloro-3-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy}-propane-1,2-diol;
• 3-{4-Chloro-3-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy)-propane-1,2-diol;
• (2-{4-Chloro-3-[6-(2,4-difluoro-phenoxy)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-phenoxy}-ethyl)-dimethyl-amine;
• 6-(2,4-Difluoro-phenoxy)-3-(2-methoxy-pyridin-3-yl)-1H-pyrazolo[3,4-d]pyrimidine;
• 3-[2-Chloro-5-(piperidin-4-yloxy)-phenyl]-6-(2,4-difluoro-phenoxy)-1H -pyrazolo[3,4-d]pyrimidine;
• 3-[2-Chloro-5-(tetrahydro-pyran-4-yloxy)-phenyl]-6-(2,4-difluoro-phenoxy)-1H -pyrazolo[3,4-d]pyrimidine;
• and
• 6-(2,4-Difluoro-phenoxy)-3-(2-methyl-pyridin-3-yl)-1H-pyrazolo[3,4-d]pyrimidine.

A compound of the formula II:

• or a pharmaceutically acceptabic salt thereof,
• wherein:
• R1 is 2,4-difluorophenyl, 4-fluorophenyl, 3-fluorophenyl, 2-fluorophenyl, phenyl, 2-chlorophenyl, 3,4-difluorophenyl, 4-trifluoromethylphenyl, 3-trifluoromethylphenyl, 2-trifluorormethylphenyl, 4-methylphenyl, 4-methoxyphenyl, 3,4-dichlorophenyl, or 1,3-benzodioxol-5-yl;
• R2 is phenyl optionally substituted with chloro, fluoro, bromo, methyl, methoxy, trifluorormethyl, pyridyl, morpholino, benzyloxy, 4-methylpiperidinyl, 2-methoxyethyl -methylamino, isopropoxy, pyridin-2-ylethoxy, amino, methylsulfanyl, 2,3-dihydroxypropoxy, 2-hydroxyethoxy, 2-(morpholin-4-yl)-ethoxy, 2-(dimethylamino) -ethoxy, 3,4-dihydroxybutyloxy, morpholin-4-ylmethyl, (2-hydroxypropyl)-aminomethyl, hydroxymethyl, ethoxy, piperidin-4-yloxy, or pyran-4-yloxy;
• R3 is hydrogen or alkyl;
• X and Y are N and Z is CR4;
• R4is hydrogen;
• and
• A is O.

A compound of the formula II:

• or a pharmaccutically acceptable salt thereof,
• wherein:
• R1 is 2,4-difluorophenyl, 4-fluorophenyl, 3-fluorophenyl, 2-fluorophenyl, phenyl, 2-chlorophenyl, 3,4-difluorophenyl, 4-trifluoromethylphenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 4-methylphenyl, 4-methoxyphenyl, 3,4-dichlorophenyl, or 1,3-benzodioxol-5-yl;
• R2 is 2-chlorophenyl, 4-fluorophenyl, 4-methoxyphenyl, 3-trifluormethylphenyl, pyridin-2-yl, pyridin-3-yl, thien-2-yl, 3-(morpholin-4-yl)-phenyl, 4-hydroxyphenyl, 4-benzyloxyphenyl, 3-(4-methyl-piperazin-1-yl)-phenyl, 4-(morpholin-4-yl)-phenyl, 3-(2-methoxyethyl-methylamino)-phenyl, 4-isopropoxyphenyl, 3-(2-pyridin-2-yl-ethoxy) -phenyl, 4-aminophenyl, 4-(4-methyl-piperazin-1-yl)-phenyl, 4-bromophenyl, 2-fluorophenyl, 3-benzyloxyphenyl, 2-methylsulfanyl, 4-methoxy-2-methylphenyl, 4(2,3-dihydroxypropoxy)-2-methyl-phenyl, 2-chloro-4-methoxyphenyl, 3-methylpyridin-2-yl, 2-fluoro-5-methoxyphenyl, 4-fluoro-2-methylphenyl, 2,4-dimethylphenyl, 2-fluoro-4-(morpholin-4-yl)-phenyl, 4-bromo-2-fluorophenyl, 2-chloro-4-methylphenyl, 2-fluoro-6-methoxyphenyl, 4-hydroxy-2-methylphenyl, 4-(2-hydroxyethoxy)-2-methylphenyl, 2-chloro-4-(2,3-dihydroxypropoxy)-phenyl, 2-chloro-4-hydroxyphenyl, 2-chloro-4-(2-hydroxyethoxy)-phenyl, 2-chloro-4-(2-[morpholin-4-yl]-ethoxy)-phenyl, 2-chloro-4-(2-dimcehylamino)-ethoxy-phenyl, 2-chloro-4-2,3-dihydroxypropoxyphenyl, 2-chloro-4-(morpholin-4-ylmethyl)-phenyl, 2-chloro-4-(2-hydroxypropyl)aminomethyl-phenyl, 2-chloro-5-2,3-dihydroxypropoxyphenyl, 2-chloro-5-hydroxyphenyl, 2-chloro-5-(2-hydroxyethyoxy)-phenyl, 2-chloro-4-hydroxymethylphenyl, 2-ethoxyphenyl, 2ethoxypyridin-3-yl-phenyl, 2-chloro-5-(2-dimethylaminoethoxy)-phenyl, 2-chloro-5-piperidin-4-yloxy-phenyl, 2-chloro-5-pyran-4-yloxy-phenyl, or 2-methylpyridin-3-yl -phenyl;
• R3 is hydrogen or alkyl;
• X and Y are N and Z is CR4;
• R4 is hydrogen;
• and
• A is O.