Acknowledgements
The authors are thankful to the Head, Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India, for providing the laboratory facilities, Dhanji P. Rajani, microcare laboratory, Surat for in vitro antimalarial activity, U.G.C., New Delhi for providing financial assistance of UGC BSR grant number C/2013/BSR/Chemistry/59 and “BSR UGC One Time Grant,” vide UGC letter No.F.19-119/2014 (BSR).