Studies on Medicago lupulina saponins. 1. Isolation and identification of sapogenins from M. lupulina tops

Piotr M. Górski, Marian Jurzysta, Stanisław Burda, Wiesław A. Oleszek, Michał Płoszyński

Abstract


Saponins from M. lupulina tops were investigated for the first time. Eight aglycones were found in the acid hydrolysates of saponins. All of the aglycones were isolated. On the basis of chromatography, mass spectrometry and infrared spectrometry the aglycanes were identified as soyasapogenols B, C, D, E, F and medicagenic acid. Two new aglycones were also isolated and identified as pentacyclic triterpens of β-amyrin structure. Both possess a methyl ester group which is rarely present in nature.

Keywords


Medicago lupulina; sapogenins; identification

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DOI: https://doi.org/10.5586/asbp.1984.047

Journal ISSN:
  • 2083-9480 (online)
  • 0001-6977 (print; ceased since 2016)
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Publisher
Polish Botanical Society