1. Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, P. R. China
2. Department
of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P. R. China
3. College
of Pharmacy, Natural Medicine Research Institute, Mokpo National University, 1666 Youngsan-ro, Muan-gun, Jeonnam 534-729, Korea