1. Natural Products Laboratory, International Joint Laboratory of Tea Chemistry and Health Effects, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, People’s Republic of China
2. School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
3. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People’s Republic of China