The extraction of Tephroseris kirilowii (Turcz.) Holub. by 60% ethanol, which mainly contained alkaloids and flavonoids, possessed inhibitory effects on leukemia LUIO cells. To further determine the pharmacological activity and toxicity of T. kirilowii and select its effective compositions, its alkaloids were analysed, the LDso value of its total alkaloids was determined, and the anti-tumor effects of an alkaloid from the plant were researched in the study.
1. The extraction of total alkaloids a...