Objective: To research the chemical constituents from the aerial parts of Medicago sativa.
Methods: Various column chromatographies were emoployed to isolate and purify the constituents. Their structures were elucidated by spectral analysis (IR, UV, MS, 1H-NMR, 13C-NMR) and chemical evidence.
Results: Two constituents were obtained and identified as soysaponin I (I), azukisaponin V (II).
Conclusion: These two compounds are isolated from the arial parts of Mesicago sativa for the first time. Moreover,the compounds are found to have hypolipidemic activity.