1. Department of P.G. Studies and Research in Industrial Chemistry, Jnanasahyadri, Kuvempu University, Shimoga, India;
2. Department of P.G. Studies and Research in Chemistry, Jnanasahyadri, Kuvempu University, Shimoga, India;
3. Department of Pharmaceutical Chemistry, NGSM Institute of Pharmaceutical Sciences, NITTE, Mangalore, India