[Study on the chemical constituents from the aerial parts of Medicago sativa and their hypolipidemic activity].

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.