1. Faculty of Pharmaceutical Sciences, University of Tokushima, Shomachi 1-78, Tokushima 770-8505, Japan, Faculty of Sciences, Naruto University of Education, Takashima, Naruto, Tokushima, 772-8502, Japan, School of Pharmacy, Shanghai Medical University, 138 Yi Xue Yuan Road, Shanghai 200032, People's Republic of China, BBI-Biotech Research Laboratories, Perry Parkway, Gaithersburg, Maryland 20877, and Natural Products Laboratory, School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina...