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;
Yunnan Institute of Medical Material;
Kunming 650111;
People’s Republic of China;
Key Laboratory of Medicinal Chemistry for Natural Resource;
Ministry of Education and Yunnan Province;
School of Chemical Science and Technology;
Yunnan University;
Kunming 650091;
People’s Republic of China;
Jiangsu Nhwa Pharmaceutical Co.;
Ltd;
Xuzhou 221009;
People’s Republic of China;
Alstonia scholaris; Indole alkaloids; Acute toxicity; Sub-chronic toxicity; Beagle dog; Non-observed-adverse-effect-level;