title: Non-steroidal anti-inflammatory agents: synthesis of novel benzopyrazolyl, benzoxazolyl and quinazolinyl derivatives of 4(3 H)-quinazolinones.
abstract: Four novel series of 4(3 H)-quinazolinone derivatives have been synthesized by cyclization of the intermediate 3-aryl-2-(6-aryl-2-cyclohexen-1-on-5-yl)-4(3 H)-quinazolinones 3a-f with hydrazine, phenylhydrazine, hydroxylamine and thiourea. The products are 3-aryl-2-(6-aryl-3-methyl-1 H-4,5-dihydrobenzo[d]pyrazol-4-yl)-4(3 H)-quinazolinones 4a-f; 3-aryl-2-(6-aryl-3-methyl-1-phenyl-1 H-4,5-dihydrobenzo[d]pyrazol-4-yl)-4(3 H)-quinazolinones 4g-1; 3-aryl-2-(6-aryl-3-methyl-4,5-dihydrobenzo[d]-1,2-oxazol-4-yl)-4(3 H)-quinazolinones 5a-f, and 3-aryl-2-(7-aryl-4-methyl-5,6-dihydro-2(1 H)thioxoquinazolin-5-yl)-4(3 H)-quinazolinones 6a-f. Some of these compounds showed anti-inflammatory activity comparable to or higher than that of the reference compound proquazone.
authors.affiliation: Pharmaceutical Chemistry Department, Faculty of Pharmacy, University of Alexandria, Egypt.
authors.forename: A A
authors.initials: AA
authors.lastname: Bekhit
authors.forename: M A
authors.initials: MA
authors.lastname: Khalil
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000138:chemical synthesis* / Q000494:pharmacology; D001583:Benzoxazoles / Q000138:chemical synthesis* / Q000494:pharmacology; D006099:Granuloma / Q000188:drug therapy / Q000473:pathology; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D013058:Mass Spectrometry; D011799:Quinazolines / Q000138:chemical synthesis* / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D001583:Benzoxazoles; D011799:Quinazolines