Patent ID: 8026258

Claim:
A method of treating a disease selected from the group consisting of acute or chronic pain and anxiety in a patient comprising administering to said patient a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein m is 0, 1, 2 or 3; n is 0, 1, 2 or 3; X is oxygen, sulfur, SO or SO 2 ; R 1 and R 2 are independently of one another hydrogen or C 1-3 alkyl; or R 1 and R 2 together form a group —(CH 2 ) p —, where p represents an integer ranging from 1 to 5 such that n+p is an integer ranging from 2 to 5; R 3 is hydrogen, fluorine, hydroxyl or methyl; R 4 is a group of formula CHR 5 CONHR 6 ; wherein R 5 is hydrogen or C 1-6 alkyl; and R 6 is hydrogen, C 1-6 alkyl, C 3-7 cycloalkyl or C 3-7 cycloalkyl-C 1-6 alkylene; and Y is selected from phenyl, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, triazinyl, thiazolyl, naphthyl, quinolinyl, isoquinolinyl, phthalazinyl, quinazolinyl, quinoxalinyl, naphthyridinyl, cinnolinyl, benzofuranyl, dihydrobenzofuranyl, benzothienyl, dihydrobenzothienyl, indolyl, isoindolyl, indolinyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, benzotriazolyl, benzoxadiazolyl and benzothiadiazolyl; said Y is optionally substituted by one or more substituents Y 2 , which are identical to or different from one another, or by Y 3 ; wherein Y 2 is halogen, cyano, nitro, C 1-8 alkyl, C 1-8 alkoxy, C 1-8 thioalkyl, C 1-8 fluoroalkyl, C 1-8 fluoroalkoxy, C 1-8 fluorothioalkyl, C 3-7 cycloalkyl, C 3-7 cycloalkyloxy, C 3-7 cycloalkyl-C 1-8 alkylene, C 3-7 cycloalkyl-C 1-8 alkyloxy, hydroxyl, NR 7 R 8 , NHCOR 7 , NHSO 2 NR 7 , COR 8 , CO 2 R 7 , CONR 7 R 8 , SO 2 R 7 , SO 2 NR 7 R 8 , —O—(C 1-3 alkylene)-O—, phenyloxy, phenylthio, phenyl-C 1 -C 8 alkylene, phenyl-C 1 -C 8 alkyloxy or phenyl-C 1 -C 8 alkylthio group; Y 3 is selected from phenyl, pyridinyl, pyrimidinyl, pyrazinyl or pyridazinyl; said Y 3 is optionally substituted by one or more substituents selected from Y 2 which are identical to or different from one another; R 7 and R 8 are independently of one another hydrogen or C 1-6 alkyl; or R 7 and R 8 with the nitrogen atom carrying them form an azetidine, pyrrolidine, piperidine, morpholine, thiomorpholine, azepine or piperazine ring optionally substituted by C 1-3 alkyl or benzyl; with the proviso that, when R 1 and R 2 are independently of one another hydrogen or C 1-3 alkyl, m+n>1.