1. Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
2. Chemical Materials Development Department, TANAKA KIKINZOKU KOGYO K.K., Tsukuba Technical Center, 22 Wadai, Tsukuba, Ibaraki 300-4247, Japan
3. Bio Chemical Development Department, TANAKA KIKINZOKU KOGYO K.K., Hiratsuka Technical Center, 2-73, Shinmachi, Hiratsuka, Kanagawa 254-0076, Japan