1. Department of Chemistry, Bio-Research and Characterization Centre, School of Science, RK University , Rajkot- 360 020 , Gujarat , India
2. Department of Chemistry, Chemistry Research Laboratory, Saurashtra University , Rajkot- 360 005 , Gujarat , India
3. Department of Pharmaceutical Chemistry, School of Pharmacy, Vishwakarma University , Pune , Maharashtra, 411 048 , India