NEW DERIVATIVES OF BENZIMIDAZOLE AND IMIDAZOPYRIDINE AND THEIR APPLICATION AS MEDICINES

摘要

1,2-Disubstituted 6-(aminomethyl, aminocarbonyl or aminocarbonylalkyl)-benzimidazole derivatives (or imidazo-pyridine derivative analogs) (I) are new. Benzimidazole or imidazo-pyridine derivatives of formula (I), in the form of racemates, enantiomers or combinations of enantiomers in all proportions, and their salts are new. [Image] A : CH 2, CO or CO-CR aR b; X : N or CH; R a and R bH or R; R : 1-6C alkyl; R 1H or alkyl; R 2alkyl; or NR 1R 2heterobicycloalkyl or heterocycloalkyl, optionally substituted (os) by one or more R; R 3-(CH 2) p-Z 3, -CO-Z' 3, -CH(OH)-Z' 3 or -CONH-Z'' 3; Z 3R, OR, COR, COOR, CONHR, cycloalkyl, heterocycloalkyl, aryl or heteroaryl (where cycloalkyl and heterocycloalkyl are os by one or more R or oxy; and aryl is os by one or more of halo, NO 2 or -(CH 2) p-V 3-Y 3); or 1,3-benzodioxolyl, 1,4-benzodioxanyl or maleimido; V 3O, S, CO, COO, NHCO, CONR' 3, NHCONR' 3 or direct bond; Y 3H or R (os by one or more halo); Z' 3aryl (os by one or more of halo, NO 2 or -(CH 2) p-V' 3-Y 3); V' 3O, CO, COO, NHCO, CONR' 3 or direct bond; R' 3H, R or OR; Z'' 3H, -A 3-COOR, -A 3-CONHR or -A 3-OR; A 31-6C linear or branched hydrocarbon chain or arylene; p : 0-4; R 4-(CH 2) s-R' 4; R' 4heterocycloalkyl or heteroaryl (both containing at least one N and os by R); or -NW 4W' 4; W 4H or alkyl; W' 4-(CH 2) s-Z 4; Z 4H, alkyl or cycloalkyl; s : 0-6; and alkyl moieties have 1-8C and cycloalkyl moieties 3-7C unless specified otherwise. An independent claim is also included for the preparation of (I). ACTIVITY : Anorectic; immunomodulator; tranquilizer; antidepressant; analgesic; vasotropic; dermatological; antiinflammatory; antiseborrheic; cytostatic; neuroprotective. MECHANISM OF ACTION : Melanocortin receptor agonist or antagonist. In particular (I) are ligands for melanocortin MC4 receptors. Most compounds (I) have K i values of less than micromolar in MC4 receptor affinity assays (no specific values for individual compounds are given in the source material).