title: Antibacterial effect of some substituted tricyclic quinazolines and their synthetic precursors.
abstract: Eleven substituted tricyclic quinazolines and their synthetic precursors were tested for antibacterial effects. 3-Chloromethylcarbonyl-2-methylquinazolin-4-thione and 5-phenyl-2,3-dihydro-1,2,4-triazolo[4,3-c]quinazolin-3-one had the highest antibacterial effect against Bacillus subtilis, the MIC values being 50 mg/L. Two tested derivatives were more active against Pseudomonas aeruginosa than ampicillin, the IC50 values being 80 and 100 mg/L. The most effective derivatives contained in the structure generally pharmacologically active chromophores--methyl group in position 2 and a chloromethyl configuration on the carbonyl group in position 3.
authors.affiliation: Department of Biochemistry and Microbiology, Faculty of Chemical Technology, Slovak University of Technology, Bratislava, Slovakia.
authors.forename: S
authors.initials: S
authors.lastname: Jantová
authors.forename: K
authors.initials: K
authors.lastname: Spirková
authors.forename: S
authors.initials: S
authors.lastname: Stankovský
authors.forename: P
authors.initials: P
authors.lastname: Duchonová
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D001412:Bacillus subtilis / Q000187:drug effects; D001419:Bacteria / Q000187:drug effects*; D004926:Escherichia coli / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D011799:Quinazolines / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D011799:Quinazolines