Immunosuppressant compounds and compositions

1. A compound of Formula I:

in which:

n is 1, 2 or 3;

A is chosen from —X 1 C(O)OR 6 , —X 1 OP(O)(OR 6 ) 2 , —X 1 P(O)(OR 6 ) 2 , —X 1 S(O) 2 OR 6 , —X 1 P(O)(R 6 )OR 6 and 1H-tetrazol-5-yl; wherein X 1 is chosen from a bond and C 1-3 alkylene; and each R 6 is independently chosen from hydrogen and C 1-6 alkyl;

X is a bond or is chosen from C 1-4 alkyelene, —X 1 OX 2 —, —X 1 NR 7 X 2 —, —X 1 C(O)NR 7 X 2 —, —X 1 NR 7 C(O)X 2 —, —X 1 S(O)X 2 —, —X 1 S(O) 2 X 2 —, —X 1 SX 2 — and C 2-9 heteroarylene; wherein X 1 and X 2 are independently chosen from a bond and C 1-3 alkylene; R 7 is chosen from hydrogen and C 1-6 alkyl; and any heteroarylene of X is optionally substituted by a member of the group chosen from halo and C 1-6 alkyl;

Y is C 6-10 aryl, wherein any aryl of Y can be optionally substituted with 1 to 3 radicals chosen from halo, hydroxy, cyano, nitro, C 1-6 alkyl, C 1-6 alkoxy, halo-substituted C 1-6 alkyl and halo-substituted C 1-6 alkoxy;

R 1 is chosen from C 6-10 aryl and C 2-9 heteroaryl; wherein any aryl or heteroaryl of R 1 is substituted by a radical chosen from C 6-10 arylC 0-4 alkyl, C 2-9 heteroarylC 0-4 alkyl, C 3-8 cycloalkylC 0-4 alkyl, or C 3-8 heterocycloalkylC 0-4 alkyl; wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl group of R 1 can be optionally substituted by one to five radicals chosen from halo, C 1-6 alkyl, C 1-6 alkoxy, halo-substituted-C 1-6 alkyl and halo-substituted-C 1-6 alkoxy; and any alkyl group of R 1 can optionally have a methylene replaced by an atom or group chosen from —S—, —S(O)—, —S(O) 2 —, —NR 7 — and —O—; wherein R 7 is chosen from hydrogen or C 1-6 alkyl;

R 2 , R 3 , R 4 and R 5 are independently chosen from hydrogen, C 1-6 alkyl, halo, hydroxy, C 1-6 alkoxy, halo-substituted C 1-6 alkyl and halo-substituted C 1-6 alkoxy; and the pharmaceutically acceptable salts, hydrates, solvates, isomers and prodrugs thereof.

2. The compound of claim 1 in which R 1 is phenyl, naphthyl, furanyl or thienyl substituted by C 6-10 arylC 0-4 alkyl, C 2-9 heteroarylC 0-4 alkyl, C 3-8 cycloalkylC 0-4 alkyl, C 3-8 heterocycloalkylC 0-4 alkyl or C 1-6 alkyl; wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl group of R 1 can be optionally substituted by one to five radicals chosen from halo, C 1-6 alkyl, C 1-6 alkoxy, halo-substituted-C 1-6 alkyl and halo-substituted-C 1-6 alkoxy; and any alkyl group of R 1 can optionally have a methylene replaced by an atom or group chosen from —S—, —S(O)—, —S(O) 2 —, —NR 7 — and —O—; wherein R 7 is hydrogen or C 1-6 alkyl.

3. The compound of claim 1 in which Y is phenyl; and X is a bond or is chosen from —X 1 OX 2 — and C 4-6 heteroarylene; wherein X 1 and X 2 are independently chosen from a bond and C 1-3 alkylene; wherein any heteroarylene of X is optionally substituted by a member of the group chosen from halo and C 1-6 alkyl.

4. The compound of claim 1 in which R 1 is chosen from:

wherein the asterisk is the point of attachment of R 1 with X; m is chosen from 1 and 2; R 12 is selected from hydrogen, C 6-10 arylC 0-4 alkyl, C 2-9 heteroarylC 0-4 alkyl, C 3-8 cycloalkylC 0-4 alkyl, or C 3-8 heterocycloalkylC 0-4 alkyl; wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl group of R 12 can be optionally substituted by one to three radicals chosen from halo, C 1-6 alkyl, C 1-6 alkoxy, halo-substituted-C 1-6 alkyl and halo-substituted-C 1-6 alkoxy; and any alkyl group of R 12 can optionally have a methylene replaced by an atom or group chosen from —S—, —S(O)—, —S(O) 2 —, —NR 10 — and —O—; wherein R 10 is hydrogen or C 1-6 alkyl; and R 13 is chosen from halo, C 1-6 alkyl, C 1-6 alkoxy, halo-substituted-C 1-6 alkyl and halo-substituted-C 1-6 alkoxy.

5. The compound of claim 1 in which A is —(CH 2 ) 2 C(O)OH; and R 2 , R 3 , R 4 and R 5 are hydrogen.

6. The compound of claim 5 in which n is 1 or 2; Y is phenyl; and X is a bond or selected from [1,2,4]oxadiazole, —CH 2 O—, —OCH 2 —, isoxazoles and [1,3,4]oxadiazole.

7. The compound of claim 6 in which R 1 is selected from:

wherein R 12 is selected from hydrogen, phenyl and cyclohexyl; wherein any phenyl or cyclohexyl of R 12 is optionally substituted with methyl; and R 13 is selected from trifluoromethyl, methyl and ethyl.

8. The compound of claim 7 selected from 3-{6-[3-(2-trifluoromethyl-biphenyl-4-yl)-[1,2,4]oxadiazol-5-yl]-3,4-dihydro-1H-isoquinolin-2-yl}-propionic acid, 3-[6-(2-trifluoromethyl-biphenyl-4-yloxymethyl)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid, 3-{5-[5-(2-trifluoromethyl-biphenyl-4-yl)-isoxazol-3-yl]-1,3-dihydro-isoindol-2-yl}-propionic acid, 3-{5-[5-(2-trifluoromethyl-biphenyl-4-yl)-[1,2,4]oxadiazol-3yl]-1,3-dihydro-isoindol-2-yl}-propionic acid, 3-{5-[5-(2-trifluoromethyl-biphenyl-4-yl)-[1,3,4]oxadiazol-2-yl]-1,3-dihydro-isoindol-2-yl}-propionic acid, 3-{7-[5-(2-trifluoromethyl-biphenyl-4-yl)-[1,2,4]oxadiazol-3-yl]-3,4-dihydro-1H-isoquinolin-2-yl}-propionic acid, 3-{6-[5-(2-trifluoromethyl-biphenyl-4-yl)-[1,2,4]oxadiazol-3-yl]-3,4-dihydro-1H-isoquinolin-2-yl}-propionic acid, 3-{6-[5-(2-trifluoromethyl-biphenyl-4-yl)-[1,3,4]oxadiazol-2-yl]-3,4-dihydro-1H-isoquinolin-2-yl}-propionic acid, 3-[6-(3-trifluoromethyl-benzyloxy)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid, 3-[6-(4-cyclohexyl-3-trifluoromethyl-benzyloxy)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid, 3-[6-(2-trifluoromethyl-biphenyl-4-ylmethoxy)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid, 3-[7-(4-cyclohexyl-3-trifluoromethyl-benzyloxy)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid, 3-[6-(4-cyclohexyl-3-methyl-phenoxymethyl)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid, 3-[6-(4-cyclohexyl-3-ethyl-phenoxymethyl)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid, 3-[6-(2-ethyl-biphenyl-4-yloxymethyl)-3,4-dihydro-1H-isoquinolin-2-yl]-propionic acid and 3-[6(2-ethyl-3′-methyl-biphenyl-4-yloxymethyl)-3,4-dihydro-1H-isoquinolin-2yl]-propionic acid.

9. A pharmaceutical composition comprising a therapeutically effective amount of a compound of claim 1 in combination with a pharmaceutically acceptable excipient.

10. A method for for preventing or treating acute or chronic transplant rejection in a subject comprising administering to the subject in need thereof an effective amount of a compound of claim 1 , or a pharmaceutically acceptable salt thereof.

11. A compound selected from 3-[2-(2-trifluoromethyl-biphenyl-4-yl)-5,7-dihydro-oxazolo[4,5-f]isoindol-6-yl]-propionic acid and the pharmaceutically acceptable salts thereof.