title: 11-Oxo-11H-pyrido[2,1-b]quinazoline-8-carboxylic acid, an orally active antiallergy agent.
abstract: A new series of 11-oxo-11H-pyrido[2,1-b]quinazolinecarboxylic acids and related analogues has been synthesized and evaluated as potential antiallergy agents. In the rat PCA test, 11-oxo-11H-pyrido[2,1--b]quinazoline-8-carboxylic acid is orally active and more potent than cromolyn sodium or doxantrazole intravenously.
mesh_terms: D000818:Animals; D006168:Guinea Pigs; D006633:Histamine Antagonists / Q000138:chemical synthesis; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D010323:Passive Cutaneous Anaphylaxis / Q000187:drug effects*; D011799:Quinazolines / Q000138:chemical synthesis* / Q000494:pharmacology; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D006633:Histamine Antagonists; D011799:Quinazolines