title: Pharmacologically active sulfoximides: 5-hexyl-7-)S-methylsulfonimidoly) xanthone-2-carboxylic acid, a potent antiallergic agent.
abstract: The antiallergic activity of some xanthone derivatives containing a sulfoximide substitutent has been investigated. While 2-(S-methylsulfonimidoyl)xanthone itself was found to be inactive, a series of 7-(S-methylsulfonimidoly)-xanthone-2-carboxylic acids showed good levels of activity in the passive cutaneous anaphylaxis screen. N-Substituted sulfoximide derivatives were, without exception, less active than the corresponding unsubstituted compounds. The activity of the 7-(S-methylsulfonimidoyl)xanthone-2-carboxylic acids could be enhanced by the introduction of an alkyl or alkoxy substituent at C-5. As a result of these studies, 5-hexyl-7(S-methylsulfonimidoyl)xanthone-2-carboxylic acid has been selected for further investigation as an antipasthmatic agent.
mesh_terms: D000818:Animals; D006967:Hypersensitivity / Q000188:drug therapy*; D007097:Imines / Q000138:chemical synthesis / Q000494:pharmacology; D008297:Male; D010323:Passive Cutaneous Anaphylaxis / Q000187:drug effects; D051381:Rats; D013329:Structure-Activity Relationship; D013454:Sulfoxides / Q000138:chemical synthesis* / Q000494:pharmacology; D014966:Xanthenes / Q000138:chemical synthesis / Q000494:pharmacology
chemical_list: D007097:Imines; D013454:Sulfoxides; D014966:Xanthenes