1. Center for Drug Discovery, Graduate School of Pharmaceutical
Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
2. Department of Physical Biochemistry, School
of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
3. Tsukuba Research Center, Taiho Pharmaceutical Co., Ltd., 3 Okubo, Tsukuba, Ibaraki 300-2611, Japan