1. Laboratory of Medicinal Bioresources, Graduate School of Medicine and Pharmaceutical Sciences for Research, University of Toyama, Sugitani, Toyama 930-0194, Japan
2. Laboratory of Plant Gene Expression, Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji 611-0011, Japan
3. Institute of Pharmacognosy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
4. Department of Chemical and Biological Engineering, Akita National College of Technology, Iijimabunkyo-cho, Akita 011-8511, Japan
5. Laboratory of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, University of Tokyo, Tokyo 113-0033, Japan