Separation and characterization of homopipecolic acid isoflavonoid ester derivatives isolated from Ononis spinosa L. root

Nóra Gampe, András Darcsi, László Kursinszki, S. Béni

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Spiny restharrow root (Ononis spinosa L.) and its preparations are mainly used for the treatment of urinary infections or bladder stones in numerous countries. Spiny restharrow root is rich in isoflavonoids (formononetin, calycosin and pseudobaptigenin), pterocarpans (medicarpin and maackiain) and dihydroisoflavonoids (onogenin and sativanone), which metabolites are present as glucosides, glucoside malonates, glucoside acetates and free aglycones in the root. The in-depth analysis of tandem mass spectrometric (MS) and high-resolution MS (HR-MS) data revealed the presence of nitrogen-containing compounds in the root extracts. An ion-exchange-based purification and a preparative-scale reversed phase chromatographic isolation procedure was developed for the characterization of these new natural products. For the unambiguous identification of the isolated compounds NMR experiments were carried out. The thorough characterization confirmed the presence of six piperidin-2-yl-acetic acid (homopipecolic acid) esters of isoflavonoid glucosides. This is the first report of homopipecolic acid esters isolated from higher plants.

Original languageEnglish
Pages (from-to)21-28
Number of pages8
JournalJournal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences
Volume1091
DOIs
Publication statusPublished - Aug 1 2018

Keywords

  • Homopipecolic acid
  • HPLC-MS/MS
  • Isoflavonoid
  • Leguminosae
  • NMR
  • Ononis spinosa L.
  • Piperidin-2-yl-acetic acid

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Cell Biology

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