Disubstituted ureas and uses thereof in treating heart failure

1. A compound of Formula Ic

or a pharmaceutically acceptable salt thereof, wherein

T 1 is —CHR 14 —, —NR 14 CHR 15 —, —CHR 15 NR 14 —, or —CHR 14 —CHR 15 —; wherein

each R 14 and R 15 is independently selected from hydrogen, optionally substituted alkyl, optionally substituted acyl, carboxy, optionally substituted lower alkoxycarbonyl, optionally substituted aminocarbonyl, optionally substituted alkoxy, optionally substituted cycloalkoxy, optionally substituted sulfonyl, optionally substituted amino, optionally substituted cycloalkyl, and optionally substituted heterocycloalkyl;

n is one, two, or three;

R 2 is optionally substituted aryl, optionally substituted aralkyl; optionally substituted cycloalkyl, optionally substituted heteroaryl, optionally substituted heteroaralkyl or optionally substituted heterocycloalkyl;

R 3 is hydrogen, halo, cyano, optionally substituted alkyl, optionally substituted heterocycloalkyl, or optionally substituted heteroaryl;

R 4 is hydrogen, halo, cyano, optionally substituted alkyl, optionally substituted heterocycloalkyl, or optionally substituted heteroaryl;

R 5 is hydrogen, halo, cyano, optionally substituted alkyl, optionally substituted heterocycloalkyl, or optionally substituted heteroaryl;

R 13 is hydrogen, halo, cyano, hydroxyl, optionally substituted alkyl, optionally substituted heterocycloalkyl, or optionally substituted heteroaryl; and

R 6 and R 7 are independently hydrogen, aminocarbonyl, alkoxycarbonyl, optionally substituted alkyl or optionally substituted alkoxy, or R 6 and R 7 , taken together with the carbon to which they are attached, form an optionally substituted 3- to 7-membered ring which optionally incorporates one or two additional heteroatoms, selected from N, O, and S in the ring.

2. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 14 and R 15 are independently selected from hydrogen, methyl, carboxy, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, tert-butoxycarbonyl, benzyloxycarbonyl, N,N—N,N-dimethylcarbamoyl, acetyl, methylacetyl, dimethylacetyl, propoxy, methoxy, cyclohexylmethyloxy, methylsulfonyl, ethylsulfonyl, n-propylsulfonyl, isopropylsulfonyl, azetidin-1-ylsulfonyl, dimethylamino sulfonyl, methanesulfonamido, N-methyl-methanesulfonamido, ethanesulfonamido, N-methyl-ethanesulfonamido, N-methoxycarbonyl-N-methylamino, N-ethoxycarbonyl-N-methylamino, N-isopropoxycarbonyl-N-methylamino, N-tert-butoxycarbonyl-N-methylamino, acetamido, N-methylacetamido, N-methylpropionamido, N-methylisobutyramido, amino, methylamino, dimethylamino, N-methyl-(dimethylamino sulfonyl)amino, and piperidin-1-yl.

3. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 2 is selected from optionally substituted phenyl, optionally substituted naphthyl, optionally substituted pyrrolyl, optionally substituted thiazolyl, optionally substituted isooxazolyl, optionally substituted pyrazolyl, optionally substituted oxazolyl, optionally substituted 1,3,4-oxadiazolyl, optionally substituted pyridinyl, optionally substituted pyrazinyl, optionally substituted pyrimidinyl and optionally substituted pyridazinyl.

4. The compound of claim 3 , or a pharmaceutically acceptable salt thereof, wherein R 2 is chosen from pyridin-3-yl, pyridin-4-yl, pyridin-1-oxide, pyrimidin-5-yl, and isoxazol-3-yl, wherein the pyridin-3-yl, pyridin-4-yl, pyridin-1-oxide, pyrimidin-5-yl, and isoxazol-3-yl is optionally substituted with lower alkyl, lower alkoxy, halo, cyano or acetyl.

5. The compound of claim 3 , or a pharmaceutically acceptable salt thereof, wherein R 2 is pyridin-3-yl which is optionally substituted with lower alkyl; R 2 is pyridin-4-yl which is optionally substituted with lower alkyl; optionally substituted pyrimidin-5-yl; or optionally substituted isoxazol-3-yl.

6. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein the compound of Formula Ic is chosen from compounds of Formula Id

wherein

T 2 is —C═ or —N═; and

R 16 is selected from hydrogen, halo, cyano, optionally substituted alkyl, and optionally substituted alkoxy.

7. The compound of claim 6 , or a pharmaceutically acceptable salt thereof, wherein T 2 is —C═.

8. The compound of claim 6 , or a pharmaceutically acceptable salt thereof, wherein T 2 is —N═.

9. The compound of claim 6 , or a pharmaceutically acceptable salt thereof, wherein R 16 is selected from hydrogen, methyl, fluoro, cyano, methoxy, and acetyl.

10. The compound of claim 9 , or a pharmaceutically acceptable salt thereof, wherein R 16 is hydrogen or methyl.

11. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 3 is hydrogen, cyano, fluoro, chloro, or methyl.

12. The compound of claim 11 , or a pharmaceutically acceptable salt thereof, wherein R 3 is hydrogen or fluoro.

13. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 4 and R 6 are independently chosen from hydrogen, pyridinyl, halo and optionally substituted lower alkyl.

14. The compound of claim 13 , or a pharmaceutically acceptable salt thereof, wherein R 4 is hydrogen, pyridinyl, trifluoromethyl, or fluoro.

15. The compound of claim 13 , or a pharmaceutically acceptable salt thereof, wherein R 6 is hydrogen, chloro, fluoro, methyl, or trifluoromethyl.

16. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 13 is hydrogen, halo, hydroxyl, or lower alkyl.

17. The compound of claim 16 , or a pharmaceutically acceptable salt thereof, wherein R 13 is hydrogen or fluoro.

18. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein n is one.

19. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein n is two.

20. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein n is three.

21. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 6 and R 7 are independently hydrogen or methyl.

22. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 6 and R 7 are hydrogen.

23. The compound of claim 18 , or a pharmaceutically acceptable salt thereof, wherein R 6 is methyl and R 7 is hydrogen.

24. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 3 , R 4 , R 5 , and R 13 are hydrogen.

25. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein one of R 3 , R 4 , R 5 , and R 13 is halo, methyl or cyano and the others are hydrogen.

26. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein two of R 3 , R 4 , R 5 , and R 13 are halo or cyano and the others are hydrogen.

27. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein

R 2 is pyridin-3-yl which is optionally substituted with lower alkyl; phenyl which is optionally substituted with halo; optionally substituted pyrimidin-5-yl, or optionally substituted isoxazol-3-yl;

R 3 is hydrogen or fluoro;

R 4 is hydrogen, pyridinyl or fluoro;

R 5 is hydrogen or fluoro;

R 6 and R 7 are independently hydrogen or methyl; and

R 13 is hydrogen or fluoro.

28. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein

R 2 is pyridin-3-yl which is optionally substituted with lower alkyl; phenyl which is optionally substituted with halo; optionally substituted pyrimidin-5-yl; or optionally substituted isoxazol-3-yl;

R 3 is hydrogen or fluoro;

R 4 is hydrogen, pyridinyl or fluoro;

R 5 is hydrogen or fluoro;

R 6 and R 7 are independently hydrogen or methyl; and

R 13 is hydrogen or fluoro,

wherein one of R 3 , R 4 , and R 5 is not hydrogen.

29. A pharmaceutical composition comprising a pharmaceutically acceptable excipient, carrier or adjuvant and a compound of claim 1 , or a pharmaceutically acceptable salt thereof.

30. A method of treating heart failure in a mammal which method comprises administering to a mammal in need thereof a therapeutically effective amount of a compound of claim 1 , or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition comprising said compound or pharmaceutically acceptable salt thereof.

31. The method of claim 30 wherein the heart failure is congestive heart failure.

32. The method of claim 30 wherein the heart failure is systolic heart failure.