title: Pyrrolnitrin analogues. IX. Synthesis and biological activity of 1-tolyl-3-nitrophenyl-5-methylpyrazole-4-carboxylic acids and 1-tolyl-3-methyl-5-nitrophenylpyrazole-4-carboxylic acids.
abstract: The syntheses of all the possible 1-tolyl-3-nitrophenyl-5-methylpyrazole-4-carboxylic acids, 1-tolyl-3-methyl-5-nitrophenylprazole-4-carboxylic acids and of the corresponding carboxylates are reported. Several 1,3- and 1,5-diarylpyrazole derivatives were subjected to in vitro antibacterial screenings. Some acids showed activity against some strains of gram-positive bacteria. The results are discussed on the basis of structure-activity relationships.
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis*; D001419:Bacteria / Q000187:drug effects*; D055598:Chemical Phenomena; D002621:Chemistry; D008826:Microbial Sensitivity Tests; D009578:Nitrobenzenes / Q000138:chemical synthesis* / Q000494:pharmacology; D011720:Pyrazoles / Q000138:chemical synthesis* / Q000494:pharmacology; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D009578:Nitrobenzenes; D011720:Pyrazoles