1. Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education and Yunnan Province, School of Chemical Science and TechnologyYunnan University Kunming 650091 P.R. China
2. Laboratory of Molecular Genetics of Aging and TumorsMedical SchoolKunming University of Science and Technology Kunming 650500 P.R. China
3. Biomedical DepartmentYunnan Cancer Hospital, Third Affiliated Hospital of Kunming Medical University Kunming 650118 P.R. China
4. Institute of Drug Research and DevelopmentKunming Pharmaceutical Corporation Kunming 650100 P.R. China
5. Department of AnorectalKunming Municipal Hospital of Traditional Chinese Medicine Kunming 650011 P.R. China