1. USDA-ARS, Natural Products Utilization Research Unit; Thad Cochran Center; University MS 38677 USA
2. Department of Applied Chemistry; Graduated School of Agriculture; Kindai University; 3327-204 Nakamachi Nara City Nara 631-8505 Japan
3. National Center for Natural Products Research; School of Pharmacy; University of Mississippi; MS 38677 USA