1. Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, People’s Republic of China
2. Hainan Branch of the Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Haikou 570311, People’s Republic of China
3. Key Laboratory of Medicinal and Edible Plant Resources of Hainan Province, Hainan Institute of Science and Technology, Haikou 571126, People’s Republic of China