1. Department of Chemistry, Gunma University, Kiryu Gunma 376-8515 Japan, Department of Chemistry, Kyushu Kyoritsu University, Jiyugaoka, Yahatanishi-ku, Fukuoka 807-8585 Japan, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 Japan, and School of High Technology for Human Welfare, Tokai University, Numazu, Shizuoka 410-0395 Japan