| Autor: |
Tsemeugne J; Laboratory of Applied Synthetic Organic Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon.; Department of Organic Chemistry, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon., Sopbué Fondjo E; Laboratory of Applied Synthetic Organic Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon., Tamokou JD; Laboratory of Microbiology and Antimicrobial Substances, Department of Biochemistry, Faculty of Science, University of Dschang, P.O. Box 067, Dschang, Cameroon., Rohand T; Laboratory of Analytical and Molecular Chemistry, Polydisciplinary Faculty of Safi, Cadi Ayyad University, Route Sidi Bouzid, BP 4162, 46000 Marrakech-Safi, Morocco., Ngongang AD; Laboratory of Applied Synthetic Organic Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon., Kuiate JR; Laboratory of Microbiology and Antimicrobial Substances, Department of Biochemistry, Faculty of Science, University of Dschang, P.O. Box 067, Dschang, Cameroon., Sondengam BL; Department of Organic Chemistry, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon. |
| Abstrakt: |
A new trisazo dye has been synthesized by coupling the diazonium ion of 3-amino-4H thieno[3,4-c][1]benzopyran-4-one with 2- tert -butyl-4-methoxyphenol. The newly prepared trisazo dye was characterized by its physical, elemental, and spectroscopic data. 2D-NMR (COSY, HSQC, and HMBC) techniques were used to secure the structural assignments. The new trisazo dye (compound 7 ) along with precursors 3 , 4 , and 6 was screened by microdilution susceptibility assay for antibacterial and antifungal activities towards eight bacterial strains and three yeasts selected on the basis of their relevance as human pathogens. The results showed that compound 7 (MIC = 2-128 μ g/mL) was the most active as compared with its precursors. The most resistant microorganisms were V. cholerae NB2 and V. cholerae SG24, whereas the most sensitive microorganism was C. neoformans. The overall results of this study indicated that compound 7 had the greatest potential value against both yeasts and multidrug-resistant bacteria, so further investigation is warranted. |
