1. Department of Interdisciplinary Studies of Natural Environment, Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima 739-8521, Japan, Natural Products Research Laboratories, School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, School of Pharmacy, Shanghai Medical University, Shanghai, People's Republic of China, Faculty of Sciences, Naruto University of Education, Takashima, Naruto, Tokushima, 772-8502, Japan, and Faculty of Pharmaceutical...