1. Department of Chemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
2. Department of Chemistry, Central University of Rajasthan, Bandarsindari, Distt. Ajmer-305801, Rajasthan, India
3. Department of Pharmacology, A.T. Still University of Health Sciences, Kirksville, Missouri 63501, United States
4. Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, Missouri 63110, United States