title: Trifluoromethylcontaining sulfanilamides. I. Synthesis and in vitro antibacterial activity.
abstract: In a wider research directed to improve pharmacological profiles of known anti-infective agents by introducing fluorine or trifluoromethyl groups, some sulfanilamides trifluoromethylsubstituted on N1 ring, were synthesized and examined for their in vitro activity against gram-positive and gram-negative bacteria. Two N1-trifluoromethylphenyl-sulfanilamides, 1 and 4, exhibited MIC values, against all tested bacteria, similar or lower than those of the "classical" sulfanilamides, assayed in comparison. The new sulfanilamide 4 appears to be the more interesting: in fact, the presence of p-aminobenzoic acid (PABA) in culture medium did not influence its MIC values and no synergy was observed with trimethoprim, suggesting mechanism of action different from that of known sulfanilamides.
authors.affiliation: Dipartimento Farmaco-chimico, Facoltà di Farmacia, Villaggio SS. Annunziata, Messina, Italy.
authors.forename: M G
authors.initials: MG
authors.lastname: Vigorita
authors.forename: R
authors.initials: R
authors.lastname: Ottanà
authors.forename: G
authors.initials: G
authors.lastname: Bisignano
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002855:Chromatography, Thin Layer; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008826:Microbial Sensitivity Tests; D013055:Spectrophotometry, Infrared; D013424:Sulfanilamides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D014295:Trimethoprim / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D013424:Sulfanilamides; D014295:Trimethoprim