1. National Peanut Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Dawson, Georgia 39842, United States
2. National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
3. Natural Products Utilization Research Unit, Agricultural Research Service, United States Department of Agriculture, University of Mississippi, University, Mississippi 38677, United States
4. Department of Medicinal Chemistry, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
5. Mosquito and Fly Research Unit, Center for Medical, Agricultural, and Veterinary Entomology, Agricultural Research Service, United States Department of Agriculture, Gainesville, Florida 32608, United States
6. Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States