1. Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
2. Department of Cytology and Histology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama, Okayama 700-8558, Japan
3. Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
4. Comprehensive Education and Research Center, Kobe Pharmaceutical University, Kobe 658-8558, Japan
5. Laboratory of Organic Chemistry for Life Science, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-cho, Higashinada, Kobe, Hyogo 658-8558, Japan
6. Research Organization for Science and Technology, Ritsumeikan University, Shiga 525-8577, Japan