Dayananda S. Badiger
Karnatak University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Dayananda S. Badiger.
European Journal of Medicinal Chemistry | 2010
Rekha S. Hoonur; Basavaraj R. Patil; Dayananda S. Badiger; Ramesh S. Vadavi; Kalagouda B. Gudasi; Prasad Dandawate; Mahesh M. Ghaisas; Subhash Padhye; Munirathinam Nethaji
Five-coordinate, neutral transition metal complexes of newly designed pyridine-2-ethyl-(3-carboxylideneamino)-3-(2-phenyl)-1,2-dihydroquinazolin-4(3H)-one (L) were synthesized and characterized. The structure of ligand is confirmed by single crystal X-ray diffraction studies. The compounds were evaluated for the anti-inflammatory activity by carrageenan-induced rat paw edema model while their analgesic activity was determined by acetic acid-induced writhing test in mice wherein the transition metal complexes were found to be more active than the free ligand.
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2010
Rekha S. Hunoor; Basavaraj R. Patil; Dayananda S. Badiger; Ramesh S. Vadavi; Kalagouda B. Gudasi; V. M. Chandrashekhar; Iranna S. Muchchandi
Co(II), Ni(II), Cu(II) and Zn(II) complexes with a new heterocyclic Schiff base derived by the condensation of isonicotinoylhydrazide and 3-acetylcoumarin have been synthesized. ¹H, ¹³C and 2D HETCOR NMR analyses confirm the formation of title compound and existence of the same in two isomeric forms. The metal complexes were characterized on the basis of various spectroscopic techniques like electronic, EPR, IR, ¹H and ¹³C NMR studies, elemental analysis, magnetic properties and thermogravimetric analysis, and also by the aid of molar conductivity measurements. It is found that the Schiff base behaves as a monobasic tridentate ligand coordinating in the imidol form with 1:1 metal to ligand stoichiometry. Trigonal bipyramidal geometry has been assigned for Ni(II) and Cu(II) complexes, while tetrahedral for Co(II) and Zn(II) complexes. The compounds were subjected to antimicrobial and anti-tubercular activity screening using serial broth dilution method and Minimum Inhibitory Concentration (MIC) is determined. Zn(II) complex has shown significant antifungal activity with an MIC of 6.25 μg/mL while Cu(II) complex is noticeable for antibacterial activity at the same concentration. Anti-TB activity of the ligand has enhanced on complexation with Co(II) and Ni(II) ions.
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2011
Ramesh S. Vadavi; Rashmi V. Shenoy; Dayananda S. Badiger; Kalagouda B. Gudasi; L. Gomathi Devi; Munirathinam Nethaji
The coordinating behavior of a new dihydrazone ligand, 2,6-bis[(3-methoxysalicylidene)hydrazinocarbonyl]pyridine towards manganese(II), cobalt(II), nickel(II), copper(II), zinc(II) and cadmium(II) has been described. The metal complexes were characterized by magnetic moments, conductivity measurements, spectral (IR, NMR, UV-Vis, FAB-Mass and EPR) and thermal studies. The ligand crystallizes in triclinic system, space group P-1, with α=98.491(10)°, β=110.820(10)° and γ=92.228(10)°. The cell dimensions are a=10.196(7)Å, b=10.814(7)Å, c=10.017(7)Å, Z=2 and V=1117.4(12). IR spectral studies reveal the nonadentate behavior of the ligand. All the complexes are neutral in nature and possess six-coordinate geometry around each metal center. The X-band EPR spectra of copper(II) complex at both room temperature and liquid nitrogen temperature showed unresolved broad signals with g(iso)=2.106. Cyclic voltametric studies of copper(II) complex at different scan rates reveal that all the reaction occurring are irreversible.
Letters in Organic Chemistry | 2012
Shrinath S. Machakanur; Basavaraj R. Patil; Dayananda S. Badiger; Aishakhanam H. Pathan; Kalagouda B. Gudasi; Sim Wan Annie Bligh
A series of novel symmetric triazine hydrazones [N3C3(-OC6H4-p-C(CH3)=N-NH-C(O)-C6H4-p-X)3] (X = H, Br, Cl, F, OH, OCH3, CH3, NO2, NH2) were prepared in excellent yields by a three-fold condensation reaction of 2,4,6- tris(4-acetylphenoxy)-1,3,5-triazine with p-substituted benzoic acid hydrazides [NH2-NH-C(O)-C6H4-p-X]. The structures were confirmed by FT-IR, 1H, 13C, 2D-HMQC NMR and mass spectrometry (MALDI-TOF).
Journal of Molecular Structure | 2012
Shrinath S. Machakanur; Basavaraj R. Patil; Dayananda S. Badiger; Raghavendra P. Bakale; Kalagouda B. Gudasi; S.W. Annie Bligh
Applied Organometallic Chemistry | 2011
Rekha S. Hunoor; Basavaraj R. Patil; Dayananda S. Badiger; Ramesh S. Vadavi; Kalagouda B. Gudasi; V. M. Chandrashekhar; Iranna S. Muchchandi
Inorganica Chimica Acta | 2012
Dayananda S. Badiger; Rekha S. Hunoor; Basavaraj R. Patil; Ramesh S. Vadavi; Chandrashekhar V. Mangannavar; Iranna S. Muchchandi; Yogesh P. Patil; Munirathinam Nethaji; Kalagouda B. Gudasi
Chemical & Pharmaceutical Bulletin | 2010
Rekha S. Hunoor; Basavaraj R. Patil; Dayananda S. Badiger; Ramesh S. Vadavi; Kalagouda B. Gudasi; Chandrashekhar Venkaraddy Magannavar; Iranna Sangappa Muchandi
Applied Organometallic Chemistry | 2015
Rekha S. Hunoor; Basavaraj R. Patil; Dayananda S. Badiger; V. M. Chandrashekhar; Iranna S. Muchchandi; Kalagouda B. Gudasi
Journal of Molecular Structure | 2011
Basavaraj R. Patil; Shrinath S. Machakanur; Dayananda S. Badiger; Rekha S. Hunoor; Kalagouda B. Gudasi; Munirathinam Nethaji; S.W. Annie Bligh