1. Department of Pharmacognosy and National Center for Natural Products Research, Department of Pharmacology, School of Pharmacy, and Department of Chemistry & Biochemistry, University of Mississippi, University, Mississippi 38677, Center of Marine Biotechnology, University of Maryland Biotechnology Institute, Suite 236 Columbus Center, Baltimore, Maryland 21202, Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii 96822, and Bruker BioSpin, 15 Fortune Drive, Billerica, Massachusetts 01821