1. Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo, 200 West Kawili Street, Hilo, Hawaii 96720, United States
2. Cancer Biology Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, Hawaii 96813, United States
3. Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina
4. Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas (IPNA-CSIC), 38206 La Laguna, Tenerife, Spain
5. Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
6. Department of Biology, Washington University in St. Louis, One Brookings Drive, St. Louis, Missouri 63130, United States