1. Department of Pharmacognosy and Phytochemistry, Meiji Pharmaceutical University, Noshio 2-522-1, Kiyose-shi, Tokyo 204-8588, Japan, Department of Analytical Biochemistry, Meiji Pharmaceutical University, Noshio 2-522-1, Kiyose-shi, Tokyo 204-8588, Japan, and Department of Genome Biology, Kinki University School of Medicine, Ohno-Higashi 377-2, Osaka-Sayama-shi, Osaka 589-8511, Japan