title: Pyridazines 91. Synthesis of substituted tri- and tetracyclic compounds bearing a pyridazine core and their biological evaluation as antimycobacterial agents.
abstract: Starting from substituted 3,6-dichloropyridazine-4-carboxamides (2, 3) tri- and tetracyclic compounds (4, 5) could be smoothly prepared. Structural modifications of interest with regard to biological activity were performed by N-alkylation and reductive dehalogenation. The new substituted heterocyclic compounds were screened as antimycobacterial agents; the influence of the substitution pattern on activity is discussed.
authors.affiliation: Institute of Pharmacy, Department of Pharmaceutical Chemistry, University of Innsbruck, Austria.
authors.forename: G
authors.initials: G
authors.lastname: Heinisch
authors.forename: B
authors.initials: B
authors.lastname: Matuszczak
authors.forename: K
authors.initials: K
authors.lastname: Planitzer
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D000995:Antitubercular Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D006571:Heterocyclic Compounds / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D008055:Lipids / Q000737:chemistry / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D009169:Mycobacterium tuberculosis / Q000187:drug effects; D011724:Pyridazines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D000995:Antitubercular Agents; D006571:Heterocyclic Compounds; D008055:Lipids; D011724:Pyridazines