1. EaStCHEM School of Chemistry, University of St. Andrews, St.
Andrews, Fife, KY16 9ST, U.K.
2. Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
3. Department of Chemistry,
Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan
4. Department of Chemistry, Graduate School
of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan