本文报告从地锦草(Euphorbia humifusa willa)的地上全草分离得到三种黄酮甙E_Ⅰ、E_Ⅲ、E_Ⅴ,经鉴定E_Ⅰ、E_Ⅴ为山奈素甙,E_Ⅲ为槲皮素甙。将总黄酮水解后,分离得甙元山奈素及槲皮素。除槲皮素在地锦草有报导外,E_Ⅰ、E_Ⅲ、E_Ⅴ及山奈素均未见在此植物中报导。 地锦草的醋酸乙酯提取部分表现由于控制嘌呤系统转换酶活性而达到抗寄生虫的作用。 This paper reports that three flavonoids E_I, E_III, and E_V were isolated from the whole plant of Euphorbia humifusa willa. E_I and E_V were identified as kaempferol and E_III were quercetin. After the total flavonoids were hydrolyzed, amycin and quercetin were isolated. In addition to quercetin reported in Euphorbia decemline, E_I, E_III, E_V, and Kaempferol have not been reported in this plant. The ethyl acetate extract from Euphorbia gracilis showed antiparasitic effects due to the control of purine system converting enzyme activity.