title: Synthesis and anti-inflammatory activity of 3,3a-dihydro-2H,9H-isoxazolo [3,2-b] [1,3]benzoxazin-9-ones and related compounds.
abstract: A series of 3,3a-dihydro-2H,9H-isoxazolo[3,2-b]-[1,3]benzoxazin-9-ones was synthesized and evaluated for anti-inflammatory, antipyretic and analgesic activity. Since many of these compounds exhibited promising activity, particularly in the anti-inflammatory tests, a number of homologous 2,3,4,4a-tetrahydro-10H-1,2-oxazino[3,2-b]-[1,3]benzoxazin-10-ones and one 3,4,5,5a-tetrahydro-2H, 11H,-1,2-oxazepino [3,2-b][1,3]benzoxazin-11-one, the 9-chloro analog, were also prepared and evaluated. The expanded ring members were generally less active than the tricyclic compounds containing the isoxazolidine ring.
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000138:chemical synthesis*; D001169:Arthritis, Experimental / Q000503:physiopathology; D005334:Fever / Q000503:physiopathology; D007249:Inflammation / Q000503:physiopathology; D007555:Isoxazoles / Q000138:chemical synthesis / Q000494:pharmacology; D008297:Male; D010078:Oxazines / Q000138:chemical synthesis* / Q000494:pharmacology; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D007555:Isoxazoles; D010078:Oxazines