Patent ID: 6841560

Claim:
A method of treatment for the prophylaxis of disorders treatable or preventable with anti-convulsive agents, migraine, neuralgia, trigeminal neuralgia, neuropathic pain, dental pain, and cancer pain comprising administering to the sufferer in need thereof a prophylactic amount of a compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein: Q is a monocyclic or bicyclic aryl or heteroaryl ring; R 1 is hydrogen, C 1-6 alkyl (optionally substituted by hydroxy or C 1-4 alkoxy), C 1-6 alkenyl, C 1-6 alkynyl, C 1-6 alkylCO—, formyl, CF 3 CO— or C 1-6 alkylSO 2 —; R 2 is hydrogen, hydroxy or up to three substituents selected from halogen, NO 2 , CN, N 3 , CF 3 O—, CF 3 S—, CF 3 CO—, trifluoromethyldiazirinyl, C 1-6 alkyl, C 1-6 alkenyl, C 1-6 alkynyl, C 1-6 perfluoroalkyl, C 3-6 cycloalkyl, C 3-6 cycloalkyl-C 1-4 alkyl-, C 1-6 alkylO—, C 1-6 alkylCO—, C 3-6 cycloalkylO—, C 3-6 cycloalkylCO—, C 3-6 cycloalkyl-C 1-4 alkylO—, C 3-6 cycloalkyl-C 1-4 alkylCO—, acetoxy, phenyl, phenoxy, benzyloxy, benzoyl, phenyl-C 1-4 alkyl-, C 1-6 alkylS—, C 1-6 alkylSO 2 —, (C 1-4 alkyl) 2 NSO 2 —, (C 1-4 alkyl)NHSO 2 —, (C 1-4 alkyl) 2 NCO—, (C 1-4 alkyl)NHCO— or CONH 2 ; or —NR 3 R 4 where R 3 is hydrogen or C 1-4 alkyl, and R 4 is hydrogen, C 1-4 alkyl, formyl, —CO 2 C 1-4 alkyl or —COC 1-4 alkyl; or two R 2 groups together form a carbocyclic ring that is saturated or unsaturated and unsubstituted or substituted by —OH or ═O; and X is hydrogen, halogen, C 1-6 alkoxy, C 1-6 alkyl, amino or trifluoroacetylamino; provided: when X is hydrogen, R 2 is not 2-alkoxy; and when X is halogen the compound of formula (I) is not N-(7-iodo-2-methyl-1,2,3,4-tetrahydroisoquinolin-5-yl)-5-benzoyl-2-methoxybenzamide, N-(7-iodo-1,2,3,4-tetrahydroisoquinolin-5-yl)-5-benzoyl-2-methoxybenzamide, N-(5-iodo-1,2,3,4-tetrahydroisoquinolin-7-yl)-5-benzoyl-2-methoxybenzamide, N-(5-iodo-1,2,3,4-tetrahydroisoquinolin-7-yl)-2-methoxy-4-trifluoromethyldiazirinylbenzamide, N-(5-iodo-1,2,3,4-tetrahydroisoquinolin-7-yl)-2-methoxy-5-trifluoromethyldiazirinylbenzamide, N-(7-iodo-1,2,3,4-tetrahydroisoquinolin-5-y)-2-methoxy-5-trifluoromethyldiazirinylbenzamide or N-(8-fluoro-2-methyl-1,2,3,4-tetrahydroisoquinolin-5-yl)-4-t-butyl-2-methoxybenzamide.