1. Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China, Institute of Tropical Biological Science and Biotechnology, Chinese Academy of Tropical Agricultural Science, Haikou 571101, People’s Republic of China, and State Key Laboratory of Phytochemistry and Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People’s Republic of China