1. Research & Development Division, Oryza Oil & Fat Chemical Co., Ltd., 1 Numata, Kitagata-cho, Ichinomiya, Aichi 493-8001, Japan, Health Sciences Research and Development Laboratories, POLA Chemical Industries, Inc., 560 Kashio-cho, Totsuka-ku, Yokohama, 244-0812, Japan, Department of Pharmacognosy, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Tsushima, Okayama 700-8530, Japan, and College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama...