1. Key
Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic
Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, People’s Republic of China
2. Key Laboratory
of Tobacco Chemistry of Yunnan Province, China Tobacco Yunnan Industrial
Co., Ltd, Kunming 650231, Yunnan, People’s Republic of China
3. Chemistry
and Chemical Engineering College, Chongqing University, Chongqing 400030, People’s Republic of China
4. Department
of Medicinal Chemistry and Pharmacognosy and WHO Collaborating Center
for Traditional Medicine, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States