Pyrimidine derivatives for the treatment of abnormal cell growth

1. A compound of the formula 1

or a pharmaceutically acceptable salt thereof,

wherein Ar is selected from:

and ring B is

wherein m is an integer from 0 to 2;

Ra represents substituents independently selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , —CN, —NR 1 R 2 , —OR 1 , —R 1 , —CO 2 R 1 and —CONR 1 R 2 ;

Rb represents a substituent selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, —CO 2 R 1 , —CONR 1 R 2 ;

each Rc independently represents a substituent selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , —CN, —(C 1 –C 6 )alkyl, —NR 1 R 2 , —OR 1 , —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, —CO 2 R 1 , and —CONR 1 R 2 or two Rc substituents may be taken together with the atom(s) to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or —(C 2 –C 9 )-heterocyclyl;

A is a suitably substituted cyclic moiety selected from the group consisting of(a) a —(C 2 –C 9 )heterocyclyl group inclusive of the ring nitrogen atom at the juncture between cyclic moiety A and the C-4 position of the pyrimidine ring of formula I; and (b) a —(C 2 –C 7 )heterocyclyl group wherein two adjacent methylene carbons of said —(C 2 –C 7 )heterocyclyl group are fused to a phenyl or —(C 2 –C 5 )heteroaryl group; wherein A is optionally substituted by 1 to 3 substituents independently selected from the group consisting of halogen, hydroxyl, cyano, R 1 , —NR 1 R 2 , —NH(CO)R 1 , —NR 2 (CO)R 1 , —(C 1 –C 6 )alkyl-NR 1 R 2 , —(C 1 –C 6 )alkyl-NH(CO)R 1 , —(C 1 –C 6 )alkyl-NR 2 (CO)R 1 —NHSO 2 R 1 , —N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(NHSO 2 )(R 1 ), —(C 1 –C 6 )alkyl(N(R 2 )(SO 2 )(R 1 ), —OR 1 , —(C 1 –C 6 )alkyl-OR 1 , —(C 1 –C 6 )alkyl-OSO 2 R 1 , —O—SO 2 R 1 , —SO 2 R 1 , SO 2 NH 2 , SO 2 NHR 1 and —SO 2 NR 1 R 2 ; and said cyclic group A is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and NR 3 ;

R 1 and R 2 are each substituents independently selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, —(C 6 –C 10 )aryl, and —(C 1 –C 9 )heteroaryl; wherein said —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, —(C 6 –C 10 )aryl, and —(C 1 –C 9 )heteroaryl R 1 or R 2 substituents are optionally substituted by one to three moieties independently selected from the group consisting of hydrogen, halogen, —CF 3 , —CN, —(C 1 –C 6 )alkyl, —NH(C 1 –C 6 )alkyl, —NH(C 3 –C 7 )cycloalkyl, —NH(C 2 –C 9 )heterocyclyl, —NH(C 6 –C 10 )aryl, —NH(C 1 –C 9 )heteroaryl, —N((C 1 –C 6 )alkyl) 2 , —N((C 3 –C 7 )cycloalkyl) 2 , —N((C 2 –C 9 )heterocyclyl) 2 , —N((C 6 –C 10 )aryl) 2 , —N((C 1 –C 9 )heteroaryl) 2 , —O(C 1 –C 6 )alkyl, —O(C 3 –C 7 )cycloalkyl, —O(C 2 –C 9 )heterocyclyl, —O(C 6 –C 10 )aryl, —O(C 1 –C 9 )heteroaryl, —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, or

R 1 and R 2 (2 may be taken together with the atom(s) to which they are attached to form a —(C 3 –C 10 )cycloalkyl or —(C 2 –C 9 )heterocyclyl, wherein said —(C 3 –C 10 )cycloalkyl or —(C 2 –C 9 )heterocyclyl is optionally substituted by one to three moieties selected from the group consisting of hydrogen, halogen, and hydroxy, and said cyclic group is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and —NR 3 ;

R 3 is a substituent selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, —(C 6 –C 10 )aryl, —(C 1 –C 9 )heteroaryl, —COR 1 , and —SO 2 R 1 ; wherein said —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, —(C 6 –C 10 )aryl, —(C 1 –C 9 )heteroaryl, —COR 1 , and —SO 2 R 1 R 3 radicals are optionally substituted by one to three moieties independently selected from the group consisting of hydrogen, halogen, hydroxy, —CN, —(C 1 –C 6 )alkyl, —NH 2 , —NHR 4 , —NR 4 2 , —OR 4 , —(C 3 –C 7 )cycloalkyl, —(C 2 –C 9 )heterocyclyl, —CO 2 R 5 , —CONH 2 , —CONHR 5 , and —CONR 5 R 6 ; wherein R 5 and R 6 of —CONR 5 R 6 may be taken together with the atoms to which they are attached to form a —(C 2 –C 9 )heterocyclyl;

R 4 and R 5 are each —(C 1 –C 6 )alkyl; and

R 6 is hydrogen or —(C 1 –C 6 )alkyl.

2. A compound according to claim 1 wherein A is a suitably substituted —(C 2 –C 9 )heterocyclyl group inclusive of the ring nitrogen atom at the juncture between cyclic moiety A and the C-4 position of the pyrimidine ring of formula I; wherein A is optionally substituted by 1 to 3 substituents independently selected from the group consisting of halogen, hydroxyl, cyano, R 1 , —NR 1 R 2 , —NH(CO)R 1 , —NR 2 (CO)R 1 , —(C 1 –C 6 )alkyl-NR 1 R 2 , —(C 1 –C 6 )alkyl-NH(CO)R 1 , —(C 1 –C 6 )alkyl-NR 2 (CO)R 1 —NHSO 2 R 1 , —N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(NHSO 2 )(R 1 ), —(C 1 –C 6 )alkyl(N(R 2 )(SO 2 )(R 1 ), —OR 1 , —(C 1 –C 6 )alkyl-OR 1 , —(C 1 –C 6 )alkyl—OSO 2 R 1 , —O—SO 2 R 1 , —SO 2 R 1 , SO 2 NH 2 , SO 2 NHR 1 and —SO 2 NR 1 R 2 ; and said cyclic group A is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and —NR 3 .

3. A compound according to claim 1 wherein A is a suitably substituted —(C 2 –C 7 )heterocyclyl group wherein two adjacent methylene carbons of said —(C 2 –C 7 )heterocyclyl group are fused to a phenyl or —(C 2 –C 5 )heteroaryl group; wherein A is optionally substituted by 1 to 3 substituents independently selected from the group consisting of halogen, hydroxyl, cyano, R 1 , —NR 1 R 2 , —NH(CO)R 1 , —NR 2 (CO)R 1 , —(C 1 –C 6 )alkyl-NR 1 R 2 , —(C 1 –C 6 )alkyl-NH(CO)R 1 , —(C 1 –C 6 )alkyl-NR 2 (CO)R 1 —NHSO 2 R 1 , —N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(NHSO 2 )(R 1 ), —(C 1 –C 6 )alkyl(N(R 2 )(SO 2 )(R 1 ), —OR 1 , —(C 1 –C 6 )alkyl-OR 1 , —(C 1 –C 6 )alkyl-OSO 2 R 1 , —O—SO 2 R 1 , —SO 2 R 1 , SO 2 NH 2 , SO 2 NHR 1 and —SO 2 NR 1 R 2 ; and said cyclic group A is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and —NR 3 .

4. A compound according to claim 1 wherein Ar is a moiety of formula 2:

5. A compound according to claim 1 wherein Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN.

6. A compound according to claim 1 wherein Ar is a moiety of formula 2 and Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN.

7. A compound according to claim 1 wherein Rb is selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, and —(C 2 –C 9 )heterocyclyl.

8. A compound according to claim 1 wherein Ar is a moiety of formula 2 and Rb is selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, and —(C 2 –C 9 )heterocyclyl.

9. A compound according to claim 1 wherein Ar is a moiety of formula 2, Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN, and Rb is selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, and —(C 2 –C 9 )heterocyclyl.

10. A compound according to claim 1 wherein Rc independently represents a substituent selected from the group consisting of hydrogen, hydroxy, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, -and (C 2 –C 9 )heterocyclyl, or two Rc substituents may be taken together with the atom to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or (C 2 –C 9 )-heterocyclyl.

11. A compound according to claim 1 wherein Ar is a moiety of formula 1 and Rc independently represents a substituent selected from the group consisting of hydrogen, hydroxy, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, -and (C 2 –C 9 )heterocyclyl, or two Rc substituents may be taken together with the atom to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or (C 2 –C 9 )-heterocyclyl.

12. A compound according to claim 1 wherein Ar is a moiety of formula 2, Rc independently represents a substituent selected from the group consisting of hydrogen, hydroxy, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, -and (C 2 –C 9 )heterocyclyl, or two Rc substituents may be taken together with the atom to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or —(C 2 –C 9 )-heterocyclyl, and Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN.

13. A compound according to claim 1 wherein Ar is a moiety of formula 2, Rc independently represents a substituent selected from the group consisting of hydrogen, hydroxy, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, -and (C 2 –C 9 )heterocyclyl, or two Rc substituents may be taken together with the atom to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or —(C 2 –C 9 )-heterocyclyl, Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN, and Rb is selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, and —(C 2 –C 9 )heterocyclyl.

14. A compound according to claim 1 wherein A is a suitably substituted —(C 2 –C 9 )heterocyclyl group inclusive of the ring nitrogen atom at the juncture between cyclic moiety A and the C-4 position of the pyrimidine ring of formula I; wherein A is optionally substituted by 1 to 3 substituents independently selected from the group consisting of halogen, hydroxyl, —NHSO 2 R 1 , —N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(NHSO 2 )(R 1 ), —(C 1 –C 6 )alkyl(N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl-OSO 2 R 1 , —O—SO 2 R 1 , —SO 2 R 1 , SO 2 NH 2 , SO 2 NHR 1 and —SO 2 NR 1 R 2 ; and said cyclic group A is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and —NR 3 .

15. A compound according to claim 1 wherein A is a suitably substituted —(C 2 –C 7 )heterocyclyl group wherein two adjacent methylene carbons of said —(C 2 –C 7 )heterocyclyl group are fused to a phenyl or —(C 2 –C 5 )heteroaryl group; wherein A is optionally substituted by 1 to 3 substituents independently selected from the group consisting of halogen, hydroxyl, —NHSO 2 R 1 , —N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(NHSO 2 )(R 1 ), —(C 1 –C 6 )alkyl(N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl-OSO 2 R 1 , —O—SO 2 R 1 , —SO 2 R 1 , SO 2 NH 2 , SO 2 NHR 1 and —SO 2 NR 1 R 2 ; and said cyclic group A is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and —NR 3 .

16. A compound according to claim 1 wherein Ar is a fused ring system selected from the group consisting of:

17. A compound according to claim 1 wherein Ar is a fused ring system selected from the group consisting of:

Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN, Rb is selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, and —(C 2 –C 9 )heterocyclyl, and Rc independently represents a substituent selected from the group consisting of hydrogen, hydroxy, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, -and (G2–C 9 )heterocyclyl, or two Rc substituents may be taken together with the atom to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or —(C 2 –C 9 )-heterocyclyl.

18. A compound according to claim 1 wherein Ar is a fused ring system selected from the group consisting of:

Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN, Rb is selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, and —(C 2 –C 9 )heterocyclyl, and Rc independently represents a substituent selected from the group consisting of hydrogen, hydroxy, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, -and (C 2 –C 9 )heterocyclyl, or two Rc substituents may be taken together with the atom to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or —(C 2 –C 9 )-heterocyclyl; and

A is a suitably substituted —(C 2 –C 9 )heterocyclyl group inclusive of the ring nitrogen atom at the juncture between cyclic moiety A and the C-4 position of the pyrimidine ring of formula I; wherein A is optionally substituted by 1 to 3 substituents independently selected from the group consisting of halogen, hydroxyl, —NHSO 2 R 1 , —N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(NHSO 2 )(R 1 ), —(C 1 –C 6 )alkyl(N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl-OSO 2 R 1 , —O—SO 2 R 1 , —SO 2 R 1 , SO 2 NH 2 , SO 2 NHR 1 and —SO 2 NR 1 R 2 ; and said cyclic group A is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and —NR 3 .

19. A compound according to claim 1 wherein Ar is a fused ring system selected from the group consisting of:

Ra is selected from the group consisting of hydrogen, halogen, hydroxy, —CF 3 , and —CN, Rb is selected from the group consisting of hydrogen, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, and —(C 2 –C 9 )heterocyclyl, and Rc independently represents a substituent selected from the group consisting of hydrogen, hydroxy, —(C 1 –C 6 )alkyl, —(C 3 –C 7 )cycloalkyl, -and (C 2 –C 9 )heterocyclyl, or two Rc substituents may be taken together with the atom to which they are attached to form a cyclic group, —(C 3 –C 10 )-cycloalkyl or —(C 2 –C 9 )-heterocyclyl, and

A is a suitably substituted —(C 2 –C 7 )heterocyclyl group wherein two adjacent methylene carbons of said —(C 2 –C 7 )heterocyclyl group are fused to a phenyl or —(C 2 –C 5 )heteroaryl group; wherein A is optionally substituted by 1 to 3 substituents independently selected from the group consisting of halogen, hydroxyl, —NHSO 2 R 1 , —N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl(NHSO 2 )(R 1 ), —(C 1 –C 6 )alkyl(N(R 2 )(SO 2 )(R 1 ), —(C 1 –C 6 )alkyl-OSO 2 R 1 , —O—SO 2 R 1 , —SO 2 R 1 , SO 2 NH 2 , SO 2 NHR 1 and —SO 2 NR 1 R 2 ; and said cyclic group A is optionally interrupted by one to three elements selected from the group consisting of —(C═O), —SO 2 , —S—, —O—, —N—, —NH— and —NR 3 .

20. A compound selected from the group consisting of:

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-piperidin-4-yl}-methanesulfonamide;

5-[4-(4-Methanesulfonyl-piperazin-1-yl)-5-trifluoromethyl-pyrimidin-2-ylamino]-1,3-dihydro-indol-2-one;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-azetidin-3-ylmethyl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-pyrrolidin-3(R)-ylmethyl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-pyrrolidin-3(S)-ylmethyl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-pyrrolidin-3(R)-yl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-pyrrolidin-3(S)-yl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-piperidin-3(S)-yl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-piperidin-3(R)-yl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-piperidin-3(R)-ylmethyl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-piperidin-4-ylmethyl}-methanesulfonamide;

N-{1-[2-(2-Oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-azetidin-3-yl}-methanesulfonamide;

N-Methyl-N-{4-[2-(2-oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-morpholin-2-ylmethyl}-methanesulfonamide;

N-Methyl-N-{1-[2-(2-oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-pyrrolidin-3(R)-yl}-methanesulfonamide;

N-Methyl-N-{1-[2-(2-oxo-2,3-dihydro-1H-indol-5-ylamino)-5-trifluoromethyl-pyrimidin-4-yl]-azetidin-3-ylmethyl}-methanesulfonamide;

5-[4-(4-Methanesulfonyl-[1,4]diazepan-1-yl)-5-trifluoromethyl-pyrimidin-2-ylamino]-1,3-dihydro-indol-2-one; and

5-[4-(1,3-Dihydro-isoindol-2-yl)-5-trifluoromethyl-pyrimidin-2-ylamino]-1,3-dihydro-indol-2-one.

21. A method for the treatment of breast cancer in a mammal comprising administering to said mammal an amount of a compound of claim 1 that is effective in treating breast cancer.

22. A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.