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;