Browsing by Author "Bamigboye, M. O."

Now showing 1 - 6 of 6
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    Chelation, Characterization and Antimicrobial screening of Mixed Isoniazid - Vitamin C complexes
    (Faculty of Natural Sciences, Al- Hikmah University, Ilorin, Nigeria, 2017-05-04) Bamigboye, M. O.; Obaleye, J. A.; Lawal, A.; Babamale, H. F.; Ajibola, A. A.; Adimula, V. O.; Lawal, M.
    In this study, mixed Zn(II), Cu(II), Co(II) complexes of Isoniazid and vitamin C were synthesized and characterized by melting point, conductivity measurement, Fourier Transform Infra-red (FT-IR), Atomic Absorption Spectroscopy and elemental analyses. The bonding nature of the mixed parent ligands and the structure of the complexes were based on analytical and spectroscopic techniques. The complexes were proposed to have the formula [M1L1L2(Cl2)], [M2L1L2(SO4)], [M3L1L2(Cl2)] where M1 = Zn(II), M2 = Cu(II), M3= Co (II) L1= Isoniazid and L2 = Vitamin C. The infra-red data relate to the results of the most informative and indicative region. The result of spectra data confirmed that the two ligands were bidentate in their mode of coordination with the metal ions. The complexes are in octahedral geometry and the molar conductance was found to be non-electrolytic in nature. Antimicrobial test was carried out against four bacterial species namely Bacillus subtilus, Staphylococuss aureus, Escherichia coli and Pseudomonas aeroginosa. All the complexes showed higher antibacterial activity at the same concentration against the microorganisms used compared to the ligands
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    Issa, A
    (2019-11-22) Lawal, A.; Issa A.; Rajee, A. O.; Mamman, A.; Saadu, H. O.; Bamigboye, M. O.; Babamale, H. F.; Osuniran W.; Busari, H. K.
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    Mixed Isonicotinylhydrazide – pyridoxine Metal omplexes: Synthesis, Characterization and Antimicrobial activity
    (The Library and Publications Committee, University of Ilorin, Ilorin, Nigeria., 2016-05-07) Lawal, M,; Obaleye, J. A.; Lawal, A.; Bamigboye, M. O.; Rajee, A. O.; Babamale, H. F.; Nnabuike, G. G.
    Some mixed metal complexes of isonicotinylhydrazide – pyridoxine have been synthesised and characterised by physical and spectroscopic studies such as melting point, conductivity measurement, TLC, FT-IR and UV-visible spectroscopy. The antimicrobial activities of the metal complexes were investigated against some clinical isolates of Eschericha Coli, Klebsiella Pneumonia, Pseudomonas aureginosa and Stapylococcus species using the agar well diffusion method. The result of the spectroscopic studies revealed that both isoniazid and pyridoxine behave as neutral bidentate ligands. The Isonicotinylhydrazide ligand coordinated through the carboxyl oxygen and amine nitrogen while pyridoxine coordinated through the oxygen of the hydroxyl group and nitrogen of the pyridine group. The result of antimicrobial activity shows that the metal complexes displayed higher inhibitory activity against the tested organisms than the parent ligands
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    Solvent Free Synthesis, Characterization and Antibacterial Studies of Urea and Thiourea Metal Complexes
    (Faculty of Pure and Applied Sciences, Ladoke Akintola University of Technology, Ogbomoso, Nigeria, 2016-10-25) Lawal, A.; Nnabuike, G. G.; Obaleye, J. A.; Bamigboye, M. O.; Lawal, M.
    Solvent-based synthesis as well as Liquid Assisted Grinding (LAG) synthesis of urea and thiourea complexes is described for comparison purposes. The resulting complexes of both methods of syntheses were characterized using melting points, conductivity values, spectroscopic data (IR, UV-Visible) and antibacterial activity study. Spectral data of the complexes synthesized by LAG method was found to be similar to those synthesized by conventional synthesis. All the ligands were found to be monodentate and all the complexes exhibited tetrahedral and square-planar geometry. The LAG method was carried out by introducing a few drops of solvent. The method is faster with a better yield compared to solvent- based method. The antimicrobial study of the ligands and the complexes was carried out against Gram-positive (Staphylococus aureus and Bacilius subtilis) and Gram-negative bacteria (Eschericia. coli). The antibacterial activity study of the complexes showed that they possessed higher inhibitory activity than their parent ligands at concentration of 200 μgml-1.
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    Some non toxic metal-based drugs for selected prevalent tropical pathogenic diseases
    (Springer and US National Library of medicine, National Institute of Health, 2016-11-30) Amolegbe, S. A.; Akinremi, C. A.; Adewuyi, S.; Lawal, A.; Bamigboye, M. O.; Obaleye, J. A.
    Metal coordination of bioorganic compounds from both natural and synthetic products is not only gaining recognition in drug design and medicinal inorganic chemistry research, also they are being considered in the improvement of the bioactivity of drugs. What is done in this paper is a review of recent advances in the study of coordinationdriven drug delivery, i.e., metal-based drugs (MBDs). The role of some late first row transition metal ions namely Fe, Cu and Zn in the biological activities of metallodrugs such as antimalarials and antimicrobials are highlighted. It was revealed that the interaction between these bio-essential transition metal ions and the organic drugs could enhance the diagnostic and therapeutic potentials of such formed drugs. This is because such interactions were proved to have improved the stability, bioavailability and cell delivery functions of the metallodrugs. Emphasizing on the challenge of metal ions toxicity, the researchers concluded on the need for the development of MBDs to combat drug resistant parasites without causing injury to normal cells. This would be of significance in addressing the concern World Health Organisation of ameliorating the increasing mortality rate in developing countries.
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    Synthesis, Characterization and Biological activity of Metal Complexes Mixed Citric acid and Amodiaquine
    (Faculty of Science, Bayero University Kano. Nigeria, 2017-05-20) Lawal, A.; Olowude, S.; Bamigboye, M. O.; Sa`ad, H. O.; Nnabuike, G. G.; Yunus-Issa, M. T.; Amolegbe, S. A.
    A range of d-block transition metals complexes of mixed amodiaquine and citric acid have been synthesized and characterised using microanalytical technique , elemental analysis, FT-IR spectroscopy and magnetic measurement. The results of the analytical and spectroscopic data revealed that both amodiaquine and citric acid acted as bidentate ligands in the ir mode of coordination with the metal ions.The citric acid bound through the carbonyl (C=O) and hydroxyl groups to the metal ions while, amodiaquine coordinated through the nitrogen atom of the amine and oxygen donor atom of hydroxyl group; resulted in structures with octahedral geometry. Percentage composition and magnetic Bohr moment data indicated that all metal complexes were paramagnetic. Molar conductance measurement indicates that the complexes are non-electrolytes in nature. The antimicrobial activity of the ligands and their mixed complexes was carried out against g(+)Pseudomonas aeruginosa, g(+)E. coli, g( +)Klebsiella pneumonia, g(+)Staphylococcus aureus and g(+)Candida using Muller Hinton diffusion method. The citric acid and amodiaquine result showed low or moderate value from (0.6-0.8) for all the metal complexes with the exception of the Cu(II) complex having inhibitory zones ranging from 1-0-1. 3 , 0 . 7 - 0 . 9 at 200 ppm respectively. Moreover, the free ligands were found being less active compared with their mixed complexes.