1. Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu, Fukuoka 808-0135, Japan
2. Division of Applied Chemistry and Biochemistry, National Institute of Technology Tomakomai College, 443 Nishikioka, Tomakomai, Hokkaido 059-1275, Japan