1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People’s Republic of China, Graduate School of the Chinese Academy of Sciences, Beijing 100049, People’s Republic of China, Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, People’s Republic of China, and College of Pharmaceutical Sciences, Dali University, Dali 671002, Yunnan, People’s Republic of China