1. Department of BioMolecular Sciences and Research Institute of Pharmaceutical Sciences School of Pharmacy University of Mississippi University MS 38677 USA
2. LS3MN2E CERNE2D Faculty of Science Mohammed V University in Rabat Rabat 10056 Morocco
3. Natural Products Utilization Research Unit United States Department of Agriculture Agricultural Research Service University MS 38677 USA
4. National Center for Natural Products Research School of Pharmacy University of Mississippi University MS 38677 USA
5. Current Address: National Institute on Drug Abuse National Institutes of Health North Bethesda MD 20852 USA