Immunosuppressant compounds and compositions

1. A compound of Formula I:

in which:

n is 1 or 2;

A is chosen from —C(O)OR 9 , —OP(O)(OR 9 ) 2 , —P(O)(OR 9 ) 2 , —S(O) 2 OR 9 , —P(O)(R 9 )OR 9 and 1H-tetrazol-5-yl; and R 9 is chosen from hydrogen and C 1-6 alkyl;

X is a bond or is chosen from C 1-4 alkylene, —X 1 OX 2 —, —X 1 NR 10 X 2 —, —X 1 C(O)NR 10 X 2 —, —X 1 NR 10 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 10 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 selected from:

wherein R 11 is hydrogen or C 1-6 alkyl; and the left and right asterisks of Y indicate the point of attachment between either —C(R 2 )(R 3 )— and X of Formula I or between X and —C(R 2 )(R 3 )— of Formula I, respectively; and Y can be optionally substituted with 1 to 3 radicals chosen from chloro, fluoro, methyl, ethyl, cyano and bromo;

R 1 is chosen from C 6-10 aryl and C 2-9 heteroaryl; wherein any aryl or heteroaryl of R 1 is optionally 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, 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 1 to 3 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 10 — and —O—; wherein R 10 is chosen from hydrogen or C 1-6 alkyl;

R 2 , R 3 , R 5 , R 6 , R 7 and R 8 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;

R 4 is chosen from hydrogen and C 1-6 alkyl; or R 7 and either R 2 , R 4 or R 5 together with the atoms to which R 2 , R 4 , R 5 and R 7 are attached forms a 4 to 7 member ring; wherein said 4 to 7 member ring is saturated or partially unsaturated; and the pharmaceutically acceptable salts thereof.

2. The compound of claim 1 in which R 1 is phenyl, naphthyl furanyl, or thienyl optionally 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 10 — and —O—; wherein R 10 is hydrogen or C 1-6 alkyl.

3. 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 hydrogen, 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 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.

4. The compound of claim 1 in which A is —C(O)OH; R 2 , R 3 , R 5 , R 6 and R 8 are hydrogen; R 7 is chosen from hydrogen and fluoro; R 4 is chosen from hydrogen and C 1-6 alkyl; or R 7 and R 4 together with the atoms to which R 7 and R 4 are attached forms azetidine.

5. The compound of claim 4 in which X is chosen from a bond, —NH— and —N(CH 3 )—; and R 1 is chosen from:

wherein m is chosen from 1 and 2; R 12 is hydrogen, phenyl, piperidinyl, 2-methyl-butyl, 3-methyl-butyl, cyclohexyl, cyclohexyl-oxy, cyclopentyl-oxy, sec-butoxy, tetrahydropyranyl, phenoxy, benzo[1,3]dioxolyl, naphthyl, 2,2-dimethyl-pentyl, butyl, benzo[b]furanyl, benzyl, phenethyl, phenyl-ethenyl, 1-phenyl-ethyl and cyclopropyl; wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl group of R 12 can be optionally substituted by one to three radicals chosen from fluoro, isobutyl, 2-methyl-butyl, trifluoromethyl, chloro, methyl, trifluoromethoxy and methoxy; and R 13 is chosen from trifluoromethyl, trifluoromethoxy, methyl, fluoro, chloro and methoxy.

6. The compound of claim 5 chosen from: 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-thieno[2,3-b]pyridin-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-2,3-dihydro-1H-isoindol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-benzooxazol-5-ylmethyl]-amino}-propionic acid, 1-[2-(4-Isobutyl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-azetidine-3-carboxylic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-benzofuran-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-benzothiazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(2′-Fluoro-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(3′-Fluoro-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2′-Chloro-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Phenoxy-3-trifluoromethyl-phenyl)-benzooxazol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2′-Fluoro-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Cyclohexyl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(5′-Fluoro-2′-methyl-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 2-Fluoro-3-{[2-(2′-fluoro-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[5,7-Dichloro-2-(2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(3′-Chloro-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[5-Chloro-2-(2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[5-Bromo-2-(2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Isobutyl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Benzo[1,3]dioxol-5-yl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Cyclohexyl-3-fluoro-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Fluoro-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(3′-Chloro-4′-fluoro-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-sec-Butyl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[5-Ethyl-2-(2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Naphthalen-2-yl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 1-{2-[4-(2,2-Dimethyl-propyl)-3-trifluoromethyl-phenyl]-benzooxazol-6-ylmethyl}-azetidine-3-carboxylic acid, 3-{[2-(4-Butyl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Benzofuran-2-yl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-({2-[4-(2,6-Difluoro-benzyl)-3-trifluoromethyl-phenyl]-benzooxazol-6-ylmethyl}-amino)-propionic acid, 3-{[2-(4-Phenethyl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Styryl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-({2-[4-(1-Phenyl-ethyl)-3-trifluoromethyl-phenyl]-benzooxazol-6-ylmethyl}-amino)-propionic acid, 3-{[2-(5′-Fluoro-2′-methoxy-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-methyl-amino}-propionic acid, 3-{[2-(5′-Fluoro-2′-methoxy-2-trifluoromethyl-biphenyl-4-yl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(3-Trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-tert-Butyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 1-[2-(2-Fluoro-5-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-azetidine-3-carboxylic acid, 3-{[5-Chloro-2-(3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 1-[2-(2-Fluoro-5-trifluoromethyl-phenyl)-benzooxazol-5-ylmethyl]-azetidine-3-carboxylic acid, 1-[2-(2-Fluoro-5-trifluoromethyl-phenyl)-benzofuran-5-ylmethyl]-azetidine-3-carboxylic acid, 3-{[2-(4-Chloro-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Cyclopropyl-3-trifluoromethyl-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Fluoro-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(3-Fluoro-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Fluoro-phenyl)-benzooxazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Cyclohexyl-3-trifluoromethyl-phenyl)-benzofuran-5-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Cyclohexyl-3-trifluoromethyl-phenyl)-2,3-dihydro-1H-isoindol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(4-Cyclohexyl-3-trifluoromethyl-phenyl)-2H-isoindol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-benzothiazol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-benzothiazol-7-ylmethyl]-amino}-propionic acid, 3-{[2-(3-Trifluoromethyl-phenyl)-benzothiazol-7-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-yl)-2H-indazol-6-ylmethyl]-amino}-propionic acid, 3-{[2-(5-Fluoro-2-trifluoromethyl-biphenyl-4-yl)-2H-indazol-6-ylmethyl]-amino}-propionic acid, 1-[2-(5-Fluoro-2-trifluoromethyl-biphenyl-4-yl)-2H-indazol-6-ylmethyl]-azetidine-3-carboxylic acid, 1-[2-(2-Trifluoromethyl-biphenyl-4-yl)-1H-benzoimidazol-5-ylmethyl]-azetidine-3-carboxylic acid, 3-{[3-Methyl-2-(2-trifluoromethyl-biphenyl-4-yl)-3H-benzoimidazol-5-ylmethyl]-amino}-propionic acid, 3-{[1-Methyl-2-(2-trifluoromethyl-biphenyl-4-yl)-1H-benzoimidazol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-ylmethyl)-2,3-dihydro-1H-isoindol-5-ylmethyl]-amino}-propionic acid, 3-{[2-(2-Trifluoromethyl-biphenyl-4-ylamino)-benzooxazol-5-ylmethyl]-amino}-propionic acid, 3-({2-[Methyl-(2-trifluoromethyl-biphenyl-4-yl)-amino]-benzooxazol-5-ylmethyl}-amino)-propionic acid, 3-{[4-Oxo-2-(2-trifluoromethyl-biphenyl-4-yl)-4H-chromen-7-ylmethyl]-amino}-propionic acid, 3-{[4-Oxo-2-(2-trifluoromethyl-biphenyl-4-yl)-4H-chromen-6-ylmethyl]-amino}-propionic acid and 1-[4-Oxo-2-(2-trifluoromethyl-biphenyl-4-yl)-4H-chromen-6-ylmethyl]-azetidine-3-carboxylic acid.

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

8. A method for 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.