1. Department of Pharmacognosy
and Phytochemistry, Meiji Pharmaceutical University, Noshio 2-522-1, Kiyose-shi, Tokyo 204-8588, Japan
2. Department of Analytical Biochemistry, Meiji Pharmaceutical University, Noshio 2-522-1, Kiyose-shi,
Tokyo 204-8588, Japan
3. Department
of Microbiology, Meiji Pharmaceutical University, Noshio 2-522-1, Kiyose-shi,
Tokyo 204-8588, Japan
4. X-ray
Research Laboratory, Rigaku Corporation, Matsubara-cho 3-9-12, Akishima-shi,
Tokyo 196-8666, Japan