1. Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan, Sankyo Organic Chemicals Co., Ltd., 3-13-1 Kuji, Takatsu-ku, Kawasaki 213-0032, Japan, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Japan, and Faculty of Engineering, Gunma University, Tenjincyo, Kiryu 376-8515, Japan