1. Institute for Chemical Research Kyoto University Gokasho, Uji, Kyoto 611-0011 Japan
2. Department of Chemistry and Research Center for Smart Molecules Rikkyo University 3-34-1 Nishi-ikebukuro Toshima-ku, Tokyo 171-8588 Japan
3. Department of Pharmaceutical Sciences International University of Health and Welfare 137-1 Enokizu Okawa, Fukuoka 831-8501 Japan