Quinoline and quinazoline derivatives having affinity for 5HT1-type receptors

1. A compound of formula (Ib):

wherein:

R 1 is halogen, cyano, C 1-6 alkyl, C 1-6 alkoxy, haloC 1-6 alkoxy or haloC 1-6 alkyl;

X is N or CH;

R 3 and R 4 are independently hydrogen, C 1-6 alkyl, C 1-6 alkylsulfonyl, a group having the formula (IIa):

wherein A is oxygen or sulfur, D is —(CH 2 ) t —, —(CH 2 ) t O— or —O(CH 2 ) t —, wherein t is 0, 1, 2, 3 or 4; and E is C 1-6 alkyl; C 3-7 cycloalkyl, optionally substituted by one or more substituents independently selected from halogen, hydroxy, oxo, C 1-6 alkyl, cyano, CF 3 , OCF 3 , C 1-6 alkoxy and C 1-6 alkanoyl; or aryl, optionally substituted by one or more substituents independently selected from halogen, C 1-6 alkyl, CF 3 , cyano, hydroxy, C 1-6 alkanoyl, and C 1-6 alkoxy;

or a group having formula (IIb)

wherein A is oxygen or sulfur, D is —(CH 2 ) t —, —(CH 2 ) t O— or —O(CH 2 ) t —, wherein t is 0,1, 2, 3 or 4; and E is C 1-6 alkyl; C 3-7 cycloalkyl, optionally substituted by one or more substituents independently selected from halogen, hydroxy, oxo, C 1-6 alkyl, cyano, CF 3 , OCF 3 , C 1-6 alkoxy and C 1-6 alkanoyl; or aryl optionally substituted by one or more substituents independently selected from halogen, C 1-6 alkyl, CF 3 , cyano, hydroxy, C 1-6 alkanoyl, and C 1-6 alkoxy;

or R 3 and R 4 , together with the nitrogen atom to which R 3 and R 4 are attached, combine to form a 3-7 membered monocyclic heterocyclic group or a 8-11 membered bicyclic heterocyclic group, wherein each group is optionally substituted by one or more substituents selected from halogen, oxo, C 1-6 alkyl, cyano, CF 3 , C 1-6 alkoxy, C 1-6 alkanoyl, aryl and arylC 1-6 alkyl, wherein the aryl and arylC 1-6 are further optionally substituted by one or more halogen, oxo, C 1-6 alkyl, cyano, CF 3 , C 1-6 alkoxy and C 1-6 alkanoyl;

or pharmaceutically acceptable salt thereof.

2. The compound or salt according to claim 1 , wherein when R 3 and R 4 , together with the nitrogen atom to which R 3 and R 4 are attached, combine to form a 3-7 membered monocyclic heterocyclic group optionally substituted by 1 to 4 substituents, which may be the same or different, and which are selected from halogen, oxo, C 1-6 alkyl, cyano, CF 3 , C 1-6 alkoxy and C 1-6 alkanoyl, the heterocyclic group is selected from the group consisting of aziridinyl, azetidinyl, pyrrolidinyl, imidazolidinyl, pyrazolidinyl, isothiazolidinyl, thiazolidinyl, pyrrolyl, pyrrolinyl, pyrazolinyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, piperidyl, piperazinyl, morpholinyl, azepinyl and azepanyl.

3. The compound or salt according to claim 1 , wherein, R 3 and R 4 , together with the nitrogen atom to which R 3 and R 4 are attached, combine to form a 3-7 membered monocyclic heterocyclic group selected from

wherein w is 0, 1, 2, 3 or 4 and R is independently halogen, oxo, C 1-6 alkyl, cyano, CF 3 , C 1-6 alkoxy, C 1-6 alkanoyl, aryl and arylC 1-6 alkyl, wherein the aryl and arylC 1-6 alkyl are further optionally substituted by one or more halogen, oxo, C 1-6 alkyl, cyano, CF 3 , C 1-6 alkoxy and C 1-6 alkanoyl.

4. The compound or salt according to claim 1 , wherein, R 3 and R 4 , together with the nitrogen atom to which R 3 and R 4 are attached, combine to form a 8-11 membered bicyclic heterocyclic group, selected from

wherein w is 0, 1, 2, 3 or 4 and R is independently halogen, oxo, C 1-6 alkyl, cyano, CF 3 , C 1-6 alkoxy, C 1-6 alkanoyl, aryl or arylC 1-6 alkyl, wherein the aryl and the arylC 1-6 alkyl are further optionally substituted by one or more halogen, oxo, C 1-6 alkyl, cyano, CF 3 , C 1-6 alkoxy or C 1-6 alkanoyl.

5. The compound or salt according to claim 1 , wherein E is a 5- to 7-membered monocyclic aromatic ring wherein one or more of the carbon atoms in the ring is optionally replaced by a heteroatom independently selected from nitrogen, oxygen and sulfur, wherein the ring is optionally substituted by one or more substituents independently selected from oxo, halogen, C 1-6 alkyl, CF 3 , cyano, hydroxy, C 1-6 alkanoyl, and C 1-6 alkoxy; or E is a 9- to 10- membered bicyclic aromatic ring, wherein one or more of the carbon atoms in the ring is optionally replaced by a heteroatom independently selected from nitrogen, oxygen and sulfur, wherein the ring is optionally substituted by one or more substituents independently selected from oxo, halogen, C 1-6 alkyl, CF 3 , cyano, hydroxy, C 1-6 alkanoyl, and C 1-6 alkoxy.

6. A compound which is:

3-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-1,3-oxazolidin-2-one;

N-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-N′-phenylurea;

N-[2-(methyloxy)phenyl]-N′-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)urea;

2,4-dimethyl-N-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-1,3-thiazole-5-carboxamide;

2-fluoro-N-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)benzamide;

1-methyl-3-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-2-imidazolidinone;

1-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-2,4-imidazolidinedione;

1-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-1,3-dihydro-2H-imidazol-2-one;

1-methyl-3-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-1,3-dihydro-2H-imidazol-2-one;

4,4-dimethyl-1-(3-{2-[4-(2-methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-2-imidazolidinone;

or a pharmaceutically acceptable salt thereof.

7. A method of treatment of depression or anxiety in a mammal in need thereof which comprises administering to the mammal an effective amount of the compound or salt according to claim 1 .

8. A pharmaceutical composition comprising the compound or salt according to claim 1 , and a pharmaceutically acceptable carrier or excipient.

9. A process for preparing a pharmaceutical composition comprising mixing the compound or salt according to claim 1 and a pharmaceutically acceptable carrier or excipient.

10. A method of treatment of depression or anxiety in a mammal in need thereof which comprises administering to the mammal an effective amount of the compound or salt according to claim 6 .

11. A pharmaceutical composition comprising the compound or salt according to claim 6 , and a pharmaceutically acceptable carrier or excipient.

12. A process for preparing a pharmaceutical composition comprising mixing the compound or salt according to claim 6 and a pharmaceutically acceptable carrier or excipient.