1. School of Pharmacy, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan, College of Science and Technology, Nihon University, 1-8-14, Kanda-surugadai, Chiyodaku 101-8308, Japan, and Department of Pharmacy, Jikei University, School of Medicine Hospital, 3-19-18, Nishi-shinbashi, Minatoku, Tokyo 105-8471, Japan