1. Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, China;
2. School of Chemistry and Environment, Yunnan Minzu University, Kunming 650031, China;
3. School of Chinese Pharmacy, Yunnan University of Chinese Medicine, Kunming 650500, China;
4. Yunnan Tobacco Company, Yuxi Branch, Yuxi 653100, China;
5. College of Pharmacy, Guilin Medical University, Guilin 541199, China