1. Department of Industrial Chemistry; Faculty of Engineering; Tokyo University of Science; Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
2. Graduate School of Pharmaceutical Sciences; Hokkaido University; Sapporo 060-0812 Japan
3. Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
4. Department of Chemistry; Graduate School of Science; Tohoku University; Aoba-ku Sendai 980-8578 Japan