title: Antiallergic agents. 3. N-(1H-tetrazol-5-yl)-2-pyridinecarboxamides.
abstract: A series of N-tetrazolylpyridinecarboxamides was prepared and evaluated for antiallergic activity by the passive cutaneous anaphylaxis (PCA) assay. From the structure-activity relationships (SAR) of this class of compounds, it was revealed that the N-tetrazolylcarbamoyl group as an acidic functionality is required to be at the 2-position of the pyridine nucleus and that the phenyl group as a subtituent is not necessarily required for activity. 6-Methyl-N-(1H-tetrazol-5-yl)-2-pyridinecarboxamide (36) showed good oral activity and low toxicity.
mesh_terms: D000818:Animals; D001681:Biological Assay; D055598:Chemical Phenomena; D002621:Chemistry; D006967:Hypersensitivity / Q000188:drug therapy*; D009536:Niacinamide / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology; D010323:Passive Cutaneous Anaphylaxis / Q000187:drug effects; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D009536:Niacinamide; C040360:6-methyl-N-(1H-tetrazol-5-yl)-2-pyridinecarboxamide