1. Faculty of Pharmaceutical Sciences, University of Tokushima, Shomachi 1-78, Tokushima 770-8505, Japan, Faculty of Pharmaceutical Sciences, Kyoto University, Yoshida Sakyoku, Kyoto 606-8501, Japan, Faculty of Integrated Arts and Sciences, University of Tokushima, Josanjima, Tokushima 770-8501, Japan, and Academy of Sciences, Uzbekistan Institute of Botany, F. Khodzhaev, St. 32, 700143 Tashkent, Uzbekistan