S1P modulating agents

1. A compound selected from the group consisting of:

1-((6-(trans-4-tert-butylcyclohexyloxy)quinazolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-(1-(6-(trans-4-tert-butylcyclohexyloxy)naphthalen-2-yl)-2,2,2-trifluoroethyl)piperidine-4-carboxylic acid;

1-((6-(4-isopropylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(cis-4-tert-butylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(4-(trifluoromethyl)cyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(4-ethylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(4-butylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[4.5]decan-8-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(cis-4-ethylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(trans-4-ethylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(trans-4-tert-butylcyclohexyloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-(6-(trans-4-tert-butylcyclohexyloxy)-2-naphthoyl)piperidine-4-carboxylic acid;

1-((6-((4-tert-butylcyclohexylidene)methyl)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((2-(trans-4-tert-butylcyclohexyloxy)quinolin-6-yl)methyl)piperidine-4-carboxylic acid;

1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-ethyl-piperidine-4-carboxylic acid;

1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-propyl-piperidine-4-carboxylic acid;

1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-3-methyl-piperidine-4-carboxylic acid;

1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-phenyl-piperidine-4-carboxylic acid;

1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-perhydro-azepine-4-carboxylic acid;

1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-hydroxy-piperidine-4-carboxylic acid;

{1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-piperidin-4-yl}-acetic acid;

1-[7-(trans-4-tert-butyl-cyclohexyloxy)-isoquinolin-3-ylmethyl]-piperidine-4-carboxylic acid;

1-((6-(trans-4-tert-butylcyclohexyloxy)naphthalen-2-yl)methyl)-4-methylpiperidine-4-carboxylic acid;

1-((6-(cyclopentyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(cycloheptyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(tetrahydro-2H-pyran-4-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[5.5]undecan-3-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[3.5]nonan-7-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-piperidine-2-carboxylic acid;

1-((6-((trans-4-(tert-Butyl)cyclohexyl)oxy)-1,2,3,4-tetrahydronaphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-phenylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-(tert-pentyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(tert-butyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)-3-methylpiperidine-4-carboxylic acid;

1-((6-(((1R,2S,5R)-2-isopropyl-5-methylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((4,4-dimethylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((4-propylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-cyclobutoxynaphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-(1-(6-((trans-4-(tert-butyl)cyclohexyl)oxy)naphthalen-2-yl)ethyl)piperidine-4-carboxylic acid;

1-((6-((4-(tert-butyl)cyclohexyl)methyl)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((tetrahydrofuran-3-yl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(cyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(cyclohexyloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-methylcyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-ethylcyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(tert-pentyl)cyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(trifluoromethyl)cyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((4,4-dimethylcyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[3.5]nonan-7-yloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[5.5]undecan-3-yloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-ethylcyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[2.5]octan-6-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[4.5]decan-8-yloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((3,3,5-trimethylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-isopropylcyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((3-methylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((4-(tert-pentyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-(ethoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((octahydro-1H-inden-5-yl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(spiro[2.5]octan-6-yloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((3,4-dimethylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-(methoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-(tert-butoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-(isobutoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(tert-butoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(isobutoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(propoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((2-methylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-phenylcyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(isopropoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((cis-4-(propoxymethyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(tert-butyl)cyclohexyl)oxy)quinolin-2-yl)methyl)piperidine-3-carboxylic acid;

1-((6-((4,4-difluorocyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((2-methylcyclopentyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((4-(2-hydroxypropan-2-yl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((3-methylcyclopentyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-(bicyclo[3.1.0]hexan-3-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-isopropylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid;

1-((6-((trans-4-(tert-butyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4,4-dicarboxylic acid;

2-(1-((6-((trans-4-(tert-butyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidin-2-yl)acetic acid;

1-((6-((4,4-dimethylcyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-3-carboxylic acid;

1-((6-((4,4-dimethylcyclohexyl)oxy)naphthalen-2-yl)methyl)-4-methylpiperidine-4-carboxylic acid;

1-((6-((4,4-dimethylcyclohexyl)oxy)naphthalen-2-yl)methyl)-4-ethylpiperidine-4-carboxylic acid;

1-[6-(Bicyclo[2.2.1]hept-5-en-2-yloxy)-naphthalen-2-ylmethyl]-piperidine-4-carboxylic acid;

1-[6-(1,3,3-Trimethyl-bicyclo[2.2.1]hept-2-yloxy)-naphthalen-2-ylmethyl]-piperidine-4-carboxylic acid;

1-[2-(4-tert-Butyl-cyclohexyloxy)-quinoxalin-6-ylmethyl]-piperidine-4-carboxylic acid;

1-[2-(4-tert-Butyl-cyclohexyloxy)-quinazolin-6-ylmethyl]-piperidine-4-carboxylic acid;

1-[7-(4-tert-Butyl-cyclohexyloxy)-[1, 8]naphthyridin-3-ylmethyl]-piperidine-4-carboxylic acid; and

1-((6-(((trans-4-(trimethylsilyl)cyclohexyl)oxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid,

or a pharmaceutically acceptable salt thereof.

2. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein the compound is selective for the S1P4 receptor.

3. The compound of claim 1 , wherein the compound has a greater affinity for the S1P4 receptor, by at least 5-fold, than for S1P1 receptor, S1P2 receptor, S1P3 receptor, or S1P5 receptor.

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

5. A method for the treatment of a pathological condition or symptom in a mammal, comprising administering to said mammal an effective amount of a compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein the pathological condition is multiple sclerosis, an autoimmune disease, a chronic inflammatory disorder, asthma, an inflammatory neuropathy, arthritis, transplantation rejection, Crohn's disease, ulcerative colitis, lupus erythematosis, psoriasis, an ischemia-reperfusion injury, a solid tumor, a tumor metastasis, a vascular disease, a pain condition, an acute viral disease, an inflammatory bowel condition, insulin-dependent diabetes, or non-insulin dependent diabetes.

6. The compound of claim 1 , wherein the compound is 1-((6-(trans-4-tert-butylcyclohexyloxy)quinazolin-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

7. The compound claim 1 , wherein the compound is 1-(1-(6-(trans-4-tert-butylcyclohexyloxy)naphthalen-2-yl)-2,2,2-trifluoroethyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

8. The compound of claim 1 , wherein the compound is 1-((6-(spiro[4.5]decan-8-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

9. The compound of claim 1 , wherein the compound is 1-((6-(cis-4-ethylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

10. The compound of claim 1 , wherein the compound is 1-((6-(trans-4-tert-butylcyclohexyloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

11. The compound of claim 1 , wherein the compound is 1-(6-(trans-4-tert-butylcyclohexyloxy)-2-naphthoyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

12. The compound of claim 1 , wherein the compound is 1-((6-((4-tert-butylcyclohexylidene)methyl)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

13. The compound of claim 1 , wherein the compound is 1-((2-(trans-4-tert-butylcyclohexyloxy)quinolin-6-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

14. The compound of claim 1 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-3-methyl-piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

15. The compound of claim 1 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-phenyl-piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

16. The compound of claim 1 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-perhydro-azepine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

17. The compound of claim 1 , wherein the compound is {1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-piperidin-4-yl}-acetic acid, or a pharmaceutically acceptable salt thereof.

18. The compound of claim 1 , wherein the compound is 1-[7-(trans-4-tert-butyl-cyclohexyloxy)-isoquinolin-3-ylmethyl]-piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

19. The compound of claim 1 , wherein the compound is 1-((6-(cyclopentyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

20. The compound of claim 1 , wherein the compound is 1-((6-(tetrahydro-2H-pyran-4-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

21. The compound of claim 1 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-piperidine-2-carboxylic acid, or a pharmaceutically acceptable salt thereof.

22. The method of claim 5 , wherein the pathological condition is multiple sclerosis.

23. The method of claim 22 , wherein the compound is 1-((6-(trans-4-tert-butylcyclohexyloxy)quinazolin-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

24. The method claim 22 , wherein the compound is 1-(1-(6-(trans-4-tert-butylcyclohexyloxy)naphthalen-2-yl)-2,2,2-trifluoroethyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

25. The method of claim 22 , wherein the compound is 1-((6-(spiro[4.5]decan-8-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

26. The method of claim 22 , wherein the compound is 1-((6-(cis-4-ethylcyclohexyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

27. The method of claim 22 , wherein the compound is 1-((6-(trans-4-tert-butylcyclohexyloxy)quinolin-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

28. The method of claim 22 , wherein the compound is 1-(6-(trans-4-tert-butylcyclohexyloxy)-2-naphthoyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

29. The method of claim 22 , wherein the compound is 1-((6-((4-tert-butylcyclohexylidene)methyl)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

30. The method of claim 22 , wherein the compound is 1-((2-(trans-4-tert-butylcyclohexyloxy)quinolin-6-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

31. The method of claim 22 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-3-methyl-piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

32. The method of claim 22 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-4-phenyl-piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

33. The method of claim 22 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-perhydro-azepine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

34. The method of claim 22 , wherein the compound is {1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-piperidin-4-yl}-acetic acid, or a pharmaceutically acceptable salt thereof.

35. The method of claim 22 , wherein the compound is 1-[7-(trans-4-tert-butyl-cyclohexyloxy)-isoquinolin-3-ylmethyl]-piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

36. The method of claim 22 , wherein the compound is 1-((6-(cyclopentyloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

37. The method of claim 22 , wherein the compound is 1-((6-(tetrahydro-2H-pyran-4-yloxy)naphthalen-2-yl)methyl)piperidine-4-carboxylic acid, or a pharmaceutically acceptable salt thereof.

38. The method of claim 22 , wherein the compound is 1-[6-(4-tert-butyl-cyclohexyloxy)-naphthalen-2-ylmethyl]-piperidine-2-carboxylic acid, or a pharmaceutically acceptable salt thereof.