title: [Calcium modulators of the anellated dihydropyridine type. Synthesis and pharmacologic action].
abstract: The anellated dihydropyridines 4a-l can be gained by Hantzsch-like synthesis from 5,5-dimethylcyclohexanedione (1), the aromatic aldehydes 2a-l and methyl-beta-aminocrotonate (3). Cyclisation of the side chains with bromosuccinimide or pyridiniumbromideperbromide leads to the octahydrofuro[3,4-b]chinoline-diones 4m-p. Structures of type 4 are characterized by the spectroscopic data. Positive inotropic effects, caused by calcium agonism, are exerted by the tested substances at the isolated, electrically stimulated left guinea pig atrium, 4j being the most potent with an intrinsic activity of 0.79, compared with ethyl 4-[2-(difluoromethoxy)phenyl]-1, 4,5,7-tetrahydro-2-methyl-5-oxo-furo[3,4-b]pyridine-3-carboxylate. BaCl2-induced contractions at the guinea pig ileum are suppressed dose-dependently.
authors.affiliation: Institut für Pharmazie der Johannes Gutenberg-Universität Mainz.
authors.forename: U
authors.initials: U
authors.lastname: Rose
mesh_terms: D000818:Animals; D002121:Calcium Channel Blockers / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D004095:Dihydropyridines / Q000138:chemical synthesis*; D004558:Electric Stimulation; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D009130:Muscle, Smooth / Q000187:drug effects
chemical_list: D002121:Calcium Channel Blockers; D004095:Dihydropyridines
vernacular_title: Kalzium-Modulatoren vom Typ anellierter Dihydropyridine. Synthese und pharmakologische Wirkung.