1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, The 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, and State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, The Chinese Academy of Sciences, Shanghai, 201203, People’s Republic of China