SPECTRO-ANALYTICAL, COMPUTATIONAL AND BIOLOGICAL STUDIES ON 4-PYRIDINE CARBOXALDEHYDE-3-HYDROXY-5-(HYDROXY METHYL)-2-METHYL HYDRAZONE HYDROCHLORIDE AND ITS CU (II) COMPLEXCA
Journal Title: International Journal of Pharmacy and Pharmaceutical Sciences - Year 2014, Vol 6, Issue 8
Abstract
Objective: The title compound 4-pyridine carboxaldehyde 3-hydroxy-5-(hydroxy methyl)-2-methyl hydrazone (PCHHMMH) hydrochloride an analogue of Pyridoxal isonicotinoyl hydrazone PIH, is an iron chelator. The PCHHMMH has potential donor sites suitable for metal ion binding, the study on structural aspects of the compound and its copper complex are explored. With a view to understand biological importance of title compounds, antimicrobial and cytotoxic studies were planned.Methods: In the present study the spectroanalytical techniques employed were pH-metry, spectrophotometry, IR, 1H & 13C-NMR, UV-Vis, ESR, Magnetic measurements, TGA and SEM. The computational method employed is HyperChem 7.5 software. The antimicrobial studies were carried out by agar disc diffusion method for antibacterial studies against Gram positive and Gram negative bacteria. The cytotoxic potential was measured by Sulforhodamine B (SRB) method against selected tumor cells.Results: The equilibrium studies by employing pH-metric method inferred the dissociation of two protons in it. Further titration in presence of Cu (II) ion, it is confirmed the release of two protons from title compound and formation of corresponding complex. The orientations of frontier orbitals for molecular and ionized forms of compound were computed to understand the electronic properties. The Cu (II) PCHHMMH complex was characterized by spectroanalytical methods and screened for, antimicrobial and cytotoxic activities.Conclusion: As the structural features are important to understand the chemical behavior of metal complexes, in the present study copper complex was synthesized and characterized by employing various spectro-analytical tools viz; IR, 1H & 13C-NMR, UV-Vis, ESR, Magnetic measurements, TGA and SEM. Further the antimicrobial and cytotoxic activities were evaluated and correlated with computed QSAR data.Â
Authors and Affiliations
Eshwari K. , Mamtha P. , Ravi M. , Aparna B. , P. Harilatha Reddy, Ch. Sarala Devi
Keywords
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