1. a Centre for Phytomedicine and Medicinal Organic Chemistry, Institute of Chemical Sciences, University of Peshawar , Peshawar – 25120 , Pakistan
2. b International Center for Chemical Sciences, HEJ Research Institute of Chemistry, University of Karachi , Karachi – 75270 , Pakistan
3. c Nuclear Medicine Research Laboratory, University of Peshawar , Peshawar – 25120 , Pakistan