1. School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand, and Institute for Environmental Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan