Affiliation: | a Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan b Temko Corporation, 4-27-4 Honcho, Nakano, Tokyo 164-0012, Japan c Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand |