目的:对苜蓿地上部分的化学成分进行研究。方法:利用各种色谱技术进行分离,根据化合物的光谱数据(IR、UV、MS、1H-NMR、13C-NMR)和化学方法鉴定其结构。结果:从苜蓿地上部分中分离得到两个化合物,分别鉴定为大豆皂苷Ⅰ(Ⅰ)、黄芪皂苷Ⅴ(Ⅱ);降脂实验结果表明此化合物的混合物具有降脂作用。结论:化合物Ⅰ、Ⅱ均为首次从苜蓿地上部分分离得到,且此类化合物具有良好的降脂活性。 Objective: To study the chemical composition of the aerial part of earthworm. Methods: Various chromatographic techniques were used for separation. Their structures were identified by spectral data (IR, UV, MS, 1H-NMR, 13C-NMR) and chemical methods of the compounds. RESULTS: Two compounds were isolated from the aerial part of the alfalfa, which were identified as soyasaponin I (I) and astragaloside V (II). The lipid-lowering test results showed that the mixture of this compound has lipid-lowering effect. CONCLUSION: Compounds I and II were isolated from the aerial part of the indica for the first time, and these compounds had good lipid-lowering activity.