IP Library › Granted Patent US 8,076,338

Granted Patent B2

US 8,076,338 · App. 11/568,173 · Granted Dec 13, 2011

Kinase modulators and methods of use

Assignee: Exelixis, Inc.

View Patent ↗

Loading inventors, assignments & file history…

Monitor This Case

Get email alerts when status or documents change.

Order Certified Copies

Most orders are placed with the USPTO same day — all within 24 business hours.

Order via The Patent Place →

Pre-filled with this patent's details

Quick Facts

Patent No.: US 8,076,338
App. No.: 11/568,173
Granted: Dec 13, 2011
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

The present invention relates to compounds of the Formula (I) and (II) wherein R, R 21 , R 25 -R 33 , m, n, X 21 -X 23 , and Q 1 are defined herein. The compounds modulate protein kinase enzymatic activity to modulate cellular activities such as proliferation, differentiation, programmed cell death, migration and chemoinvasion. Compounds of the invention inhibit, regulate and/or modulate kinases, particularly p70S6 and/or Akt kinases. Methods of using and preparing the compounds, and pharmaceutical compositions thereof, to treat kinase-dependent diseases and conditions are also an aspect of the invention.

Claims (490)

1. A compound of Formula I,

or a pharmaceutically acceptable salt, hydrate, thereof, wherein,

X 21 is N;

X 22 is CR 23 ;

X 23 is N;

each of R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 27 , R 28 , R 29 and R 30 , and each R 31 , R 32 and R 33 is independently selected from —H, halogen, trihalomethyl, —CN, —NO 2 , —NR 35 R 35a , —S(O) 0-2 R 35 , —SO 2 NR 35 R 35a , —CO 2 R 35 , —C(O)NR 35 R 35a ; —N(R 35 )S O 2 R 35 ; —N(R 35 )C(O)R 35 , —N(R 35 )CO 2 R 35 , —OR 35 , —C(O)R 35 , optionally substituted lower alkyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, and optionally substituted arylalkyl;

R is selected from —H, halogen, trihalomethyl, —S(O) 0-2 R 35 , —SO 2 NR 35 R 35a , —CO 2 R 35 , —C(O)NR 35 R 35a , —OR 35 , —C(O)R 35 , optionally substituted lower alkyl, optionally substituted heterocyclylalkyl; or

two of R 25 , R 26 , R 27 , R 28 , R 29 , R 30 , R 31 or R 32 , together with the atom or respective atoms to which they are attached, combine to form an optionally substituted spirocyclic ring system, optionally substituted fused ring system, and optionally substituted saturated bridged ring system;

each of R 35 and R 35a is independently selected from —H, optionally substituted lower alkyl, optionally substituted lower alkoxy, optionally substituted aryl,

optionally substituted lower arylalkyl, optionally substituted lower aryl alkoxy, optionally substituted heterocyclyl, and optionally substituted lower heterocyclylalkyl; or

R 35 and R 35a , together with the atom or respective atoms to which they are attached, combine to form an optionally substituted five- to seven-membered heterocyclyl; and

m is an integer from 0 to 5;

n is 1.

2. A compound according to claim 1 , wherein R is —H.

3. A compound according to claim 1 , wherein R is optionally substituted alkyl.

4. A compound according to claim 2 , wherein R 21 is —H.

5. A compound according to claim 2 , wherein R 21 is optionally substituted alkyl.

6. A compound according to claim 4 , wherein R 25 and R 26 are —H.

7. A compound according to claim 6 , wherein R 27 and R 28 are —H.

8. A compound according to claim 7 , wherein R 29 is —H.

9. A compound according to claim 8 , wherein R 30 is —H.

10. A compound according to claim 8 , wherein R 30 is optionally substituted alkyl.

11. A compound according to claim 8 , wherein R 30 is —C(O)R 35 .

12. A compound according to claim 8 , wherein R 30 is —C(O)NR 35 R 35a .

13. A compound according to claim 9 , wherein R 31 is —H.

14. A compound according to claim 13 , wherein R 32 is —H.

15. A compound according to claim 13 , wherein R 32 is —C(O)R 35 .

16. A compound according to claim 13 , wherein R 29 , R 30 , R 31 , and R 32 are —H.

17. A compound according to claim 14 , wherein R 23 is optionally substituted alkyl.

18. A compound according to claim 14 , wherein R 23 is halogen.

19. A compound according to claim 18 , wherein R 23 is Br.

20. A compound according to claim 14 , wherein R 23 is —H.

21. A compound according to claim 14 , wherein m is 2.

22. A compound according to claim 14 , wherein m is 3.

23. A compound according to claim 14 , wherein R 33 is —H.

24. A compound according to claim 14 , wherein R 33 is halogen.

25. A compound according to claim 14 , wherein R 33 is optionally substituted alkyl.

26. A compound according to claim 14 , wherein R 33 is —NR 35 R 35a .

27. A compound according to claim 14 , wherein R 33 is —C(O)R 35 .

28. A compound according to claim 14 , wherein R 33 is trihalomethyl.

29. A compound of Formula II,

or a pharmaceutically acceptable salt, hydrate, thereof, wherein,

X 21 is N or CR 22 ;

X 22 is N or CR 23 ;

X 23 is N;

each of R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 27 , R 28 , R 29 and R 30 and each of R 31 , R 32 and R 33 is independently selected from —H, halogen, trihalomethyl, —CN, —NO 2 , —NR 35 R 35a , —S(O) 0-2 R 35 , —SO 2 NR 35 R 35a , —CO 2 R 35 , —C(O)NR 35 R 35a , —N(R 35 )SO 2 R 35 , —N(R 35 )C(O)R 35 , —N(R 35 )CO 2 R 35 , —OR 35 , —C(O)R 35 , optionally substituted lower alkyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, and optionally substituted arylalkyl;

R is selected from —H, halogen, trihalomethyl, —S(O) 0-2 R 35 , —SO 2 NR 35 R 35 , —CO 2 R 35 , —C(O)NR 35 R 35a , —OR 35 , —C(O)R 35 , optionally substituted lower alkyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, and optionally substituted arylalkyl; or

each R 35 and R 35a is independently selected from —H, optionally substituted lower alkyl, optionally substituted lower alkoxy, optionally substituted aryl, optionally substituted lower arylalkyl, optionally substituted lower aryl alkoxy, optionally substituted heterocyclyl, and optionally substituted lower heterocyclylalkyl; or

R 35 and R 35a , together with the atom or respective atoms to which they are attached, combine to form an optionally substituted five- to seven-membered heterocyclyl;

Q 1 optionally substituted heterocyclyl;

n is an integer from 1 to 2; and

with the proviso that when X 22 is CR 23 and X 23 is N then R is not optionally substituted aryl, aralkyl or heteroaryl.

30. A compound of claim 29 , wherein n is 1.

31. A compound of claim 29 , wherein R is —H.

32. A compound of claim 29 , wherein R is optionally substituted alkyl.

33. A compound of claim 31 , wherein R 21 is —H.

34. A compound of claim 31 , wherein R 21 is optionally substituted alkyl.

35. A compound of claim 33 , wherein R 25 and R 26 are —H.

36. A compound of claim 35 , wherein R 27 and R 28 are —H.

37. A compound of claim 36 , wherein R 29 is —H.

38. A compound of claim 37 , wherein R 30 is —H.

39. A compound of claim 37 , wherein R 30 is optionally substituted alkyl.

40. A compound of claim 37 , wherein R 30 is —C(O)R 35 .

41. A compound of claim 37 , wherein R 30 is —C(O)NR 35 R 35a .

42. A compound of claim 38 , wherein R 31 is —H.

43. A compound of claim 42 , wherein R 32 is —H.

44. A compound of claim 43 , wherein R 32 is —C(O)R 35 .

45. A compound of claim 43 , wherein R 29 , R 30 , R 31 , and R 32 are —H.

46. A compound of claim 43 , wherein R 23 is optionally substituted alkyl.

47. A compound of claim 43 , wherein R 23 is halogen.

48. A compound of claim 43 , wherein R 23 is —H.

49. A compound of claim 43 , wherein Q 1 is a substituted heterocyclyl wherein the heterocyclyl has at least one nitrogen.

50. A compound of claim 48 , wherein Q 1 is a substituted heterocyclyl wherein the heterocyclyl has at least one oxygen.

51. A composition comprising the compound of claim 29 , and at least one pharmaceutically acceptable carrier or excipient.

52. A compound which is

3-(azetidin-3-ylidenemethyl)-4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(3-fluoropyridin-4-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(3-chloropyridin-4-yl)-1H-pyrazolo[3,4-d]pyrimidine;

2-({5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}oxy)-N,N-dimethylethanamine;

2-({5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}oxy)-N,N-diethylethanamine;

4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-piperazin-1-yl-1H-pyrazolo[3,4-d]pyrimidine;

N-(3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}prop-2-yn-1-yl)acetamide;

N,N-diethyl-2-({3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]phenyl}oxy)ethanamine;

3-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-2-methylphenyl}-N,N-diethylpropan-1-amine;

3-bromo-4-{4-[5-chloro-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

2-({3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-2-methylphenyl}oxy)-N,N-diethylethanamine;

4-[4-(5-chloro-2-methyl-3-{[2-(1-methylpiperidin-4-yl)ethyl]oxy}phenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

4-(4-{5-chloro-2-methyl-3-[(2-morpholin-4-ylethyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(2-piperidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[5-chloro-2-methyl-3-(3-morpholin-4-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{5-chloro-2-methyl-3-[3-(4-methylpiperazin-1-yl)propyl]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{5-chloro-2-methyl-3-[(2-piperidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{5-chloro-2-methyl-3-[(2-morpholin-4-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[5-chloro-2-methyl-3-(3-morpholin-4-ylpropyl)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

N′-{5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}-N,N-diethylethane-1,2-diamine;

4-{4-[5-chloro-2-methyl-3-(3-piperidin-1-ylpropyl)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-3-{[2-(4-ethylpiperazin-1-yl)ethyl]oxy}-2-methylphenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(3-morpholin-4-ylpropyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[5-chloro-2-methyl-3-(3-piperidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

N′-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-2-methylphenyl}-N,N-diethylethane-1,2-diamine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

4-[4-(5-chloro-2-methyl-3-{[2-(4-methylpiperazin-1-yl)ethyl]oxy}phenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methyl-3-{[(1-methylpiperidin-4-yl)methyl]oxy}phenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

N,N-diethyl-2-({3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}oxy)ethanamine;

2-[(5-chloro-3-{4-[1-(1,1-dimethylethyl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}-2-methylphenyl)oxy]-N,N-diethylethanamine;

2-[(5-chloro-2-methyl-3-{4-[3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}phenyl)oxy]-N,N-diethylethanamine;

4-(4-{5-chloro-2-methyl-3-[(3-pyrrolidin-1-ylpropyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methyl-3-{[3-(4-methylpiperazin-1-yl)propyl]oxy}phenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{5-chloro-2-methyl-3-[(3-piperidin-1-ylpropyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{5-chloro-2-methyl-3-[(3-morpholin-4-ylpropyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(3-morpholin-4-ylpropyl)oxy]phenyl}piperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(2-morpholin-4-ylethyl)oxy]phenyl}piperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(3-piperidin-1-ylpropyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-3-{[3-(4-ethylpiperazin-1-yl)propyl]oxy}-2-methylphenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

5-chloro-2-methyl-3-[4-(1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-(2-pyrrolidin-1-ylethyl)aniline;

5-chloro-2-methyl-3-[4-(3-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-(2-pyrrolidin-1-ylethyl)aniline;

N′-(5-chloro-2-methyl-3-{4-[3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}phenyl)-N,N-dimethylethane-1,2-diamine;

3-({5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}oxy)-N,N-diethylpropan-1-amine;

N′-(5-chloro-2-methyl-3-{4-[3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}phenyl)-N,N-diethylethane-1,2-diamine;

5-chloro-2-methyl-N-(2-pyrrolidin-1-ylethyl)-3-{4-[3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}aniline;

3-bromo-4-(4-{4-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{4-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-methyl-4-(4-{4-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-methyl-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(2-piperidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

3-[(5-chloro-2-methyl-3-{4-[3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}phenyl)oxy]-N,N-diethylpropan-1-amine;

5-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-fluoro-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

4-{4-[5-chloro-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[5-fluoro-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[5-chloro-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[3-(4-methylpiperazin-1-yl)propyl]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-pyridin-2-ylpiperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(2,4-dimethylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[3-(methyloxy)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[2-(methyloxy)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[4-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(3-pyrrolidin-1-ylpropyl)oxy]phenyl}piperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(3-piperidin-1-ylpropyl)oxy]phenyl}piperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methyl-3-{[3-(4-methylpiperazin-1-yl)propyl]oxy}phenyl)piperazin-1-yl]-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-3-{[3-(4-ethylpiperazin-1-yl)propyl]oxy}-2-methylphenyl)piperazin-1-yl]-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(5-chloro-2-methyl-3-{[2-(4-methylpiperazin-1-yl)ethyl]oxy}phenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methyl-3-{[2-(4-methylpiperazin-1-yl)ethyl]oxy}phenyl)piperazin-1-yl]-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(5-chloro-3-{[2-(4-ethylpiperazin-1-yl)ethyl]oxy}-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(3,4-dichlorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(3,4-difluorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(2,4-dichlorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-fluoro-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

5-fluoro-2-methyl-N-(2-pyrrolidin-1-ylethyl)-3-{4-[3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}aniline;

4-{4-[3,5-bis(methyloxy)phenyl]piperazin-1-yl}-3-bromo-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-3-{[2-(4-ethylpiperazin-1-yl)ethyl]oxy}-2-methylphenyl)piperazin-1-yl]-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

N-{5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}-N,N′,N′-trimethylethane-1,2-diamine;

3-({3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-2-methylphenyl}oxy)-N,N-diethylpropan-1-amine;

3-bromo-4-(4-{5-chloro-2-methyl-3-[(3-pyrrolidin-1-ylpropyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(5-chloro-2-methyl-3-{[3-(4-methylpiperazin-1-yl)propyl]oxy}phenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(5-chloro-3-{[3-(4-ethylpiperazin-1-yl)propyl]oxy}-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-(5-chloro-2-methyl-3-{4-[3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}phenyl)-N,N-diethylpropan-1-amine;

3-bromo-4-[4-(5-chloro-2-methyl-3-{[(1-methylpiperidin-4-yl)methyl]oxy}phenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(5-chloro-2-methyl-3-{[2-(1-methylpiperidin-4-yl)ethyl]oxy}phenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methyl-3-{[(1-methylpiperidin-4-yl)methyl]oxy}phenyl)piperazin-1-yl]-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methyl-3-{[2-(1-methylpiperidin-4-yl)ethyl]oxy}phenyl)piperazin-1-yl]-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[3-(4-methylpiperazin-1-yl)propyl]phenyl}piperazin-1-yl)-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(3-chloro-4-fluorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

1-{4-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]phenyl}ethanone;

3-bromo-4-[4-(2,5-dichlorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(3,4-dimethylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(4-nitrophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-ethyl-4-(4-phenylpiperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-ethyl-4-{4-[3-(methyloxy)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[5-chloro-2-methyl-3-(3-piperidin-1-ylpropyl)phenyl]piperazin-1-yl}-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(3,6-dimethylpyrazin-2-yl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

1-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]isoquinoline;

3-bromo-4-[4-(2,6-dimethylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[4-(ethyloxy)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(2-ethylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[2,4-bis(methyloxy)phenyl]piperazin-1-yl}-3-bromo-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-pyrazin-2-ylpiperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-pyrimidin-2-ylpiperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(trifluoromethyl)quinoline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]pyrazine-2-carbonitrile;

4-[4-(4,6-dimethylpyrimidin-2-yl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

ethyl 4-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(trifluoromethyl)pyrimidine-5-carboxylate;

4-{4-[3-chloro-5-(methyloxy)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(3-bromo-2-chloro-5-fluorophenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

2-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]pyridine-3-carboxamide;

3-ethyl-4-{4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[4-(trifluoromethyl)pyrimidin-2-yl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

2-({3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]pyrazin-2-yl}oxy)-N,N-dimethylethanamine;

4-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylquinoline;

3-bromo-4-[4-(2-nitrophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

2-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]benzonitrile;

4-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]benzonitrile;

3-bromo-4-{4-[4-(trifluoromethyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{4-[(phenylmethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[5-chloro-2-methyl-3-(methyloxy)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

2-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]pyridine-3-carbonitrile;

3-bromo-4-[4-(3,5-dichlorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-chloro-5-fluoro-N-(2-pyrrolidin-1-ylethyl)aniline;

2-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-fluoro-N-(2-pyrrolidin-1-ylethyl)aniline;

3-bromo-4-[4-(2,5-difluorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(2,5-difluorophenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[3-(methyloxy)pyrazin-2-yl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(3-chlorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[3-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-(1-methylethyl)-1H-pyrazolo[3,4-d]pyrimidine;

5-chloro-2-methyl-3-{4-[3-(1-methylethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}-N-(2-pyrrolidin-1-ylethyl)aniline;

2-({3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]phenyl}oxy)-N-ethylacetamide;

2-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N,N-diethylpyrimidin-4-amine;

3-bromo-4-[4-(3-{[(3-methylphenyl)methyl]oxy}phenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{3-[(2-piperidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(4-furan-2-ylpyrimidin-2-yl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

6-{2-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]pyrimidin-4-yl}-2H-1,4-benzoxazin-3-(4H)-one;

3-ethyl-4-{4-[2-methyl-3-(methyloxy)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

N′-{5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}-N-methyl-N-(1-methylethyl)ethane-1,2-diamine;

N′-{5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}-N-ethyl-N-methylethane-1,2-diamine;

N′-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-2-methylphenyl}-N,N-dimethylethane-1,2-diamine;

3-({6-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-chloro-5-methylpyrimidin-4-yl}oxy)-N,N-diethylpropan-1-amine;

3-bromo-4-[4-(2,3-dichlorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[2-(trifluoromethyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-phenylpiperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(4-fluorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(4-chlorophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[3-(trifluoromethyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-6-amine;

3-bromo-4-[4-(4-bromophenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[3-methyl-4-(3-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(3-bromo-5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-6-amine;

4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-cyclopropyl-1H-pyrazolo[3,4-d]pyrimidine;

5-chloro-3-[4-(3-cyclopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

5-chloro-2-methyl-3-{4-[3-(2-methylpropyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]piperazin-1-yl}-N-(2-pyrrolidin-1-ylethyl)aniline;

4-(4-{5-chloro-2-methyl-3-[(2-pyrrolidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-(2-methylpropyl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[(3S)-4-(5-chloro-2-methylphenyl)-3-methylpiperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

5-bromo-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylaniline;

2-({3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]phenyl}oxy)-N-cyclopropylacetamide;

3-bromo-4-(4-{3-[(2-piperidin-1-ylethyl)oxy]pyrazin-2-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-6,7-bis(methyloxy)quinazoline;

2-({3-chloro-5-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]phenyl}oxy)-N,N-diethylethanamine;

4-{4-[2-chloro-5-(trifluoromethyl)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-[(2-methylpropyl)oxy]-N-(2-pyrrolidin-1-ylethyl)aniline;

3-({4-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-6-chloro-5-methylpyrimidin-2-yl}oxy)-N,N-diethylpropan-1-amine;

3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-[(phenylmethyl)oxy]-N-(2-pyrrolidin-1-ylethyl)aniline;

3-bromo-4-[(3R)-4-(5-chloro-2-methylphenyl)-3-methylpiperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-[(2S)-4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-2-methylpiperazin-1-yl]-4-methyl-N-phenylbenzamide;

3-[(2S)-4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-2-methylpiperazin-1-yl]-4-methyl-N-(phenylmethyl)benzamide;

methyl 3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methylbenzoate;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methylbenzoic acid;

(2E)-3-(4-{4-[5-chloro-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidin-3-yl)prop-2-enoic acid;

3-(4-{4-[5-chloro-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidin-3-yl)prop-2-yn-1-ol;

4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-1-(5-chloro-2-methylphenyl)piperazin-2-one;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-[(2-methylpropyl)oxy]-N-(2-pyrrolidin-1-ylethyl)aniline;

N′-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-[(2-methylpropyl)oxy]phenyl}-N,N-diethylethane-1,2-diamine;

methyl 3-bromo-5-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methylbenzoate;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-phenylbenzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N,4-dimethylbenzamide;

2-({3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]phenyl}oxy)-N,N-diethylethanamine;

methyl 3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzoate;

3-bromo-5-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-phenylbenzamide;

3-bromo-5-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-phenylbenzamide;

N′-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-2-methylphenyl}-N-methyl-N-(1-methylethyl)ethane-1,2-diamine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-phenyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

N′-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-[(2-methylpropyl)oxy]phenyl}-N,N-dimethylethane-1,2-diamine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N,N,4-trimethylbenzamide;

3-[4-(3-chloro-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-(2-methylpropyl)benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N,N,4-trimethyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-2-oxopiperazin-1-yl]-4-methyl-N-phenylbenzamide;

3-[(2R)-4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-2-(hydroxymethyl)piperazin-1-yl]-4-methyl-N-phenylbenzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(pyrrolidin-1-ylcarbonyl)-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N,4-dimethyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-(4-chlorophenyl)-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-(2-chlorophenyl)-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(cyclopropylmethyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-[(3-methylbutyl)oxy]-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(2-ethylbutyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-(butyloxy)-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-(1-methylethyl)-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N,4-dimethyl-N-(1-methylethyl)-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(cyclobutylmethyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-(ethyloxy)-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-[2-(dimethylamino)ethyl]-4-methylbenzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-(1,1-dimethylethyl)-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-pyridin-3-yl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(2-fluoro-2-methylpropyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(cyclohexylmethyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(cyclopentylmethyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-ethyl-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-[(1-methylethyl)oxy]-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(2,2-dimethylpropyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)-5-[(tetrahydrofuran-2-ylmethyl)oxy]aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-{[2-(methyloxy)ethyl]oxy}-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(propyloxy)-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-{[2-(dimethylamino)ethyl]amino}-4-methyl-N-phenylbenzamide;

N′-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(2-fluoro-2-methylpropyl)oxy]-2-methylphenyl}-N,N-dimethylethane-1,2-diamine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-{[2-(dimethylamino)ethyl]amino}-4-methyl-N-(1-methylethyl)benzamide;

1-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}pentan-1-one;

N′-(3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methylphenyl)-N,N-dimethylethane-1,2-diamine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

5-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-N-(2-pyrrolidin-1-ylethyl)biphenyl-3-amine;

1-(3-{5-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methylbiphenyl-3-yl}propyl)pyridinium;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)-5-(1,3-thiazol-2-yl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzoic acid;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(phenylethynyl)-N-(2-pyrrolidin-1-ylethyl)aniline;

{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}(phenyl)methanone;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-ethynyl-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-(3,3-dimethylbut-1-yn-1-yl)-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-bromo-4-{4-[5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-{4-[2-methyl-5-[(2-methylpropyl)oxy]-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(3-phenyl-1,2,4-oxadiazol-5-yl)-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(3-methyl-1,2,4-oxadiazol-5-yl)-N-(2-pyrrolidin-1-ylethyl)aniline;

1-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}propan-1-one;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-(3,3-dimethylbutyl)-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-ethyl-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)-5-[2-(trimethylsilyl)ethyl]aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(2-phenylethyl)-N-(2-pyrrolidin-1-ylethyl)aniline;

1-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}butan-1-one;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N,4-dimethyl-N-(methyloxy)-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-bromo-4-[4-(3-bromo-5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(3-bromo-5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methylphenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

1-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}ethanone;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(difluoromethyl)oxy]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-{[(difluoromethyl)oxy]methyl}-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(methyloxy)-N-(2-pyrrolidin-1-ylethyl)aniline;

5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

2-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-3,5,6-trifluoro-N-(3-methylbutyl)pyridin-4-amine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-[(cyclopropylmethyl)oxy]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]benzamide;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(5-methyl-1,2,4-oxadiazol-3-yl)-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-(ethylsulfonyl)-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-5-(methylsulfonyl)-N-(2-pyrrolidin-1-ylethyl)aniline;

1-{3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}pentan-1-one;

3-bromo-4-[4-(5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

6-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-3,5-difluoro-N-4-(3-methylbutyl)-N-2-(2-pyrrolidin-1-ylethyl)pyridine-2,4-diamine;

3-bromo-5-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-N-(2-pyrrolidin-1-ylethyl)aniline;

3-bromo-4-[4-(3′,4′,6-trifluoro-4-methylbiphenyl-3-yl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-chloro-N-(2-pyrrolidin-1-ylethyl)aniline;

{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}methanol;

3-bromo-4-(4-{4-methyl-2′-[(2-pyrrolidin-1-ylethyl)oxy]biphenyl-3-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-{[(2,2-difluorocyclopropyl)methyl]oxy}-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

5-bromo-3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(ethyloxy)methyl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-[4-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-1-methyl-6-(trifluoromethyl)-1H-benzimidazol-2-yl]propan-1-ol;

1-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}-4,4,4-trifluorobutan-1-one;

{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}(cyclopropyl)methanone;

3-({3′-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4′-methylbiphenyl-2-yl}oxy)-N,N-dimethylpropan-1-amine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-(1,1-difluorobutyl)-2-methyl-N-(2-pyrrolidin-1-ylethyl)aniline;

3-bromo-4-(4-{4-methyl-2′-[(3-morpholin-4-ylpropyl)oxy]biphenyl-3-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{4-methyl-2′-[(2-morpholin-4-ylethyl)oxy]biphenyl-3-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)-5-{[(2,2,2-trifluoroethyl)oxy]methyl}aniline;

1-[2-({3′-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4′-methylbiphenyl-2-yl}oxy)ethyl]pyrrolidine-2,5-dione;

3-bromo-4-(4-{3′-fluoro-4-methyl-2′-[(2-pyrrolidin-1-ylethyl)oxy]biphenyl-3-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

1-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}butan-1-one;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)-5-[(3,3,3-trifluoropropyl)oxy]aniline;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)-5-[(2,2,2-trifluoroethyl)oxy]aniline;

1-{3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-4-methyl-5-[(2-pyrrolidin-1-ylethyl)amino]phenyl}butan-1-ol;

3-bromo-4-(4-{4-chloro-2′-[(2-pyrrolidin-1-ylethyl)oxy]biphenyl-3-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-[4-(4-{5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methyl-3-[(2-pyrrolidin-1-ylethyl)amino]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]prop-2-yn-1-ol;

3-bromo-4-(4-{4-chloro-4′-fluoro-2′-[(2-pyrrolidin-1-ylethyl)oxy]biphenyl-3-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-(4-{4-methyl-3′-[(2-pyrrolidin-1-ylethyl)oxy]biphenyl-3-yl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

(2E)-3-[4-(4-{5-{[2,3-difluoro-2-(fluoromethyl)propyl]oxy}-2-methyl-3-[(2-pyrrolidin-1-ylethyl)amino]phenyl}piperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]prop-2-enoic acid;

3-[4-(3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methyl-N-(2-pyrrolidin-1-ylethyl)-5-[4,4,4-trifluoro-1,1-bis(methyloxy)butyl]aniline;

4-(4-phenylpiperazin-1-yl)-7H-pyrrolo[2,3-d]pyrimidine;

4-[4-(3-chlorophenyl)piperazin-1-yl]-7H-pyrrolo[2,3-d]pyrimidine;

4-(4-phenylpiperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(2-methylphenyl)piperazin-1-yl]-7H-pyrrolo[2,3-d]pyrimidine;

4-{4-[2-(methyloxy)phenyl]piperazin-1-yl}-7H-pyrrolo[2,3-d]pyrimidine;

4-{4-[3-(methyloxy)phenyl]piperazin-1-yl}-7H-pyrrolo[2,3-d]pyrimidine;

4-{4-[4-(methyloxy)phenyl]piperazin-1-yl}-7H-pyrrolo[2,3-d]pyrimidine;

4-{4-[3-(trifluoromethyl)phenyl]piperazin-1-yl}-7H-pyrrolo[2,3-d]pyrimidine;

6-[4-(4-chlorophenyl)piperazin-1-yl]-9H-purine;

4-[4-(4-chlorophenyl)piperazin-1-yl]-7H-pyrrolo[2,3-d]pyrimidine;

4-[4-(2-chlorophenyl)piperazin-1-yl]-7H-pyrrolo[2,3-d]pyrimidine;

4-[4-(4-fluorophenyl)piperazin-1-yl]-7H-pyrrolo[2,3-d]pyrimidine;

4-[4-(2-fluorophenyl)piperazin-1-yl]-7H-pyrrolo[2,3-d]pyrimidine;

6-[4-(2-methylphenyl)piperazin-1-yl]-9H-purine;

4-{4-[3-(trifluoromethyl)phenyl]piperazin-1-yl}-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(3-chlorophenyl)piperazin-1-yl]-3-methyl-1H-pyrazolo[3,4-d]pyrimidine;

3-methyl-4-[4-(2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-methyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-methyl-6-phenyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-6-methyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-6-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-6-(1-methylethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-phenyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-({[2-(methyloxy)ethyl]oxy}methyl)-1H-pyrazolo[3,4-d]pyrimidine;

3-bromo-4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-propyl-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}phenol;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-N-phenyl-1H-pyrazolo[3,4-d]pyrimidin-3-amine;

4-[4-(3-chlorophenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[5-chloro-2-(methyloxy)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}phenol;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-{3-[(phenylmethyl)oxy]phenyl}-1H-pyrazolo[3,4-d]pyrimidine;

3-(1,3-benzodioxol-5-yl)-4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(2-thienyl)-1H-pyrazolo[3,4-d]pyrimidine;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}aniline;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}benzoic acid;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(4-methylphenyl)-1H-pyrazolo[3,4-d]pyrimidine;

N-(4-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}phenyl)acetamide;

4-[4-(3-chlorophenyl)-1,4-diazepan-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[5-(3-chlorophenyl)-2,5-diazabicyclo [2.2.1]hept-2-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-(4-{3-chloro-4-[(2-morpholin-4-ylethyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

methyl 1-(3-chlorophenyl)-4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazine-2-carboxylate;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(3-methylbut-2-en-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine;

methyl 4-(3-chlorophenyl)-1-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazine-2-carboxylate;

4-(4-{3-chloro-4-[(2-piperidin-1-ylethyl)oxy]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(1-methylethyl)-1H-pyrazolo[3,4-d]pyrimidine;

1-(3-chlorophenyl)-4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazine-2-carboxylic acid;

1-(3-chlorophenyl)-4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-N-methylpiperazine-2-carboxamide;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(phenylmethyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(2-methylpropyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-[4-(methyloxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(4-fluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-[4-(phenyloxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-{4-[(piperidin-4-ylmethyl)oxy]phenyl}-1H-pyrazolo[3,4-d]pyrimidine;

1-(3-chlorophenyl)-N-[2-(dimethylamino)ethyl]-4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazine-2-carboxamide;

4-[4-(5-chloro-2-methyl-3-morpholin-4-ylphenyl)piperazin-1-yl]-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-(3-chlorophenyl)-1-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-N-methylpiperazine-2-carboxamide;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-[2-(methyloxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-pyridin-4-yl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-[3-(methyloxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidine;

4-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}benzonitrile;

[5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(methyloxy)phenyl]methanol;

methyl 5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(methyloxy)benzoate;

(2E)-3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}prop-2-enoic acid;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}propanoic acid;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}propan-1-01;

methyl (2E)-3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}prop-2-enoate;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-{4-[(2-morpholin-4-ylethyl)oxy]phenyl}-1H-pyrazolo[3,4-d]pyrimidine;

5-chloro-N-[2-(dimethylamino)ethyl]-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(methyloxy)benzamide;

4-(4-{5-chloro-2-(methyloxy)-3-[(4-methylpiperazin-1-yl)carbonyl]phenyl}piperazin-1-yl)-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

2-(dimethylamino)ethyl 5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(methyloxy)benzoate;

1-[5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(methyloxy)phenyl]-N,N-dimethylmethanamine;

N′-{[5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(methyloxy)phenyl]methyl}-N,N-dimethylethane-1,2-diamine;

[1-(3-chlorophenyl)-4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-2-yl]methanol;

3-[(4-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}phenyl)oxy]-N,N-dimethylpropan-1-amine;

2-chloro-4-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-methylphenol;

1-(3-chlorophenyl)-4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-N-(1-methylpiperidin-4-yl)piperazine-2-carboxamide;

1-(3-chlorophenyl)-4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-N-(2-morpholin-4-ylethyl)piperazine-2-carboxamide;

2-{[5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-(methyloxy)phenyl]oxy}-N,N-dimethylethanamine;

3-{5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}-N,N-dimethylprop-2-yn-1-amine;

N′-{5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}-N,N-dimethylethane-1,2-diamine;

1,1-dimethylethyl (2E)-3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}prop-2-enoate;

3-({2-chloro-4-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-methylphenyl}oxy)-N,N-dimethylpropan-1-amine;

2-({2-chloro-4-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-5-methylphenyl}oxy)-N,N-dimethylethanamine;

4-{-4-[5-chloro-2-methyl-4-(methyloxy)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(4-methylpiperazin-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-N,N-diethylprop-2-yn-1-amine;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}prop-2-yn-1-ol;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(piperidin-4-ylmethyl)-1H-pyrazolo[3,4-d]pyrimidine;

phenylmethyl (3aR,6aS)-5-({4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}methylidene)hexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-[(E)-(3aR,6aS)-hexahydrocyclopenta[c]pyrrol-5(1H)-ylidenemethyl]-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(3-pyrrolidin-1-ylprop-1-yn-1-yl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-[3-(4-methylpiperazin-1-yl)prop-1-yn-1-yl]-1H-pyrazolo[3,4-d]pyrimidine;

3-{4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-N,N-diethylpropan-1-amine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(3-pyrrolidin-1-ylpropyl)-1H-pyrazolo[3,4-d]pyrimidine;

4-[4-(5-chloro-2-methylphenyl)piperazin-1-yl]-3-(1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrazolo[3,4-d]pyrimidine;

3-{5-chloro-3-[4-(3-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)piperazin-1-yl]-2-methylphenyl}-N,N-diethylpropan-1-amine; or

4-{4-[5-chloro-2-methyl-3-(3-pyrrolidin-1-ylpropyl)phenyl]piperazin-1-yl}-3-ethyl-1H-pyrazolo[3,4-d]pyrimidine.

53. A compound according to claim 1 which is