1. Department of Pharmacotherapeutics, Graduate School of Pharmacy and Pharmaceutical Sciences; Fukuyama University; 985-1 Sanzo, Higashimura-cho Fukuyama Hiroshima 729-0251 Japan
2. Department of Pharmacotherapeutics; Fukuyama University; 985-1 Sanzo, Higashimura-cho Fukuyama Hiroshima 729-0251 Japan
3. Department of Physical Chemistry for Bioactive Molecules; Fukuyama University; 985-1 Sanzo, Higashimura-cho Fukuyama Hiroshima 729-0251 Japan
4. Department of Natural Product Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences; Fukuyama University; 985-1 Sanzo, Higashimura-cho Fukuyama Hiroshima 729-0251 Japan