1. Department of Natural Medicine Chemistry; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 P. R. China
2. College of Science and Technology; Nihon University; 1-8-14 Kanda Surugadai Chiyoda-ku, Tokyo 101-8308 Japan
3. Ichimaru Pharcos Company Ltd.; 318-1 Asagi Motosu-shi, Gifu 501-0475 Japan
4. Akihisa Medical Clinic; 1086-3 Kamo Sanda-shi, Hyogo 669-1311 Japan