1. Department of Studies and Research in Chemistry, Vijayanagara Sri Krishnadevaraya University, Bellary, India;
2. Department of Chemistry, University College of Science, Tumkur University, Tumakuru , India;
3. Apotex Pharmachem India Pvt Ltd., Bangalore, India;
4. Department of Chemistry, University of Kalyani, Kalyani, India;
5. Prof. C.N.R Rao Centre for Advanced Materials Research, Tumkur University, Tumkur, India