1. Graduate
School of Biomedical Sciences, Nagasaki University, 1-14 Bukyo-machi, Nagasaki 852-8521, Japan
2. Graduate
School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
3. Osaka University of Pharmaceutical Sciences, Osaka 569-1094, Japan
4. Division
of Organic Chemistry, National Institute of Health Sciences, Tokyo 158-8501, Japan
5. Department
of Pharmaceutical Sciences, Nihon Pharmaceutical University, Saitama 362-0806, Japan