1. Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China
2. Yunnan Academy of Tobacco Agricultural Sciences, Kunming 650021, China
3. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
4. Yunnan Tobacco Company of China National Tobacco Corporation, Kunming 650011, China