1. Graduate
School of Pharmaceutical Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
2. Department
of Chemistry, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
3. Chemical
Genomics Research Group, RIKEN CSRS, Wako, Saitama 351-0198, Japan