Cardenolide glycosides from Elaeodendron australe var. integrifolium

Phytochemistry. 2014 Feb:98:160-3. doi: 10.1016/j.phytochem.2013.11.024. Epub 2013 Dec 19.

Abstract

Extracts from dried leaf and stems of Elaeodendron australe var. integrifolium (Celastraceae) collected in South East Queensland, Australia, were active in an assay that measured Ca(2+) driven expression of IL-2/luciferase designed to identify inhibitors of the ICRAC channel. Bioassay-guided isolation using C18 and polyamide column chromatography, HPLC (Phenyl and C18) and centrifugal partition chromatography (CPC) led to the isolation of digitoxigenin (1) and three cardenolide glycosides, glucoside 2, quinovoside 3 and the new natural product xyloside 4, as the active components with low nM activity in the reporter assay.

Keywords: Cardenolide; Celastraceae; Centrifugal partition chromatography; Elaeodendron australe var. integrifolium; Interleukin-2 (IL-2)/luciferase inhibitor; Ion channel; Na(+)/K(+)-ATPase.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Calcium Channels / metabolism*
  • Cardenolides / chemistry
  • Cardenolides / isolation & purification
  • Cardenolides / pharmacology*
  • Celastraceae / chemistry*
  • Dose-Response Relationship, Drug
  • Glycosides / chemistry
  • Glycosides / isolation & purification
  • Glycosides / pharmacology*
  • Molecular Conformation
  • Plant Leaves / chemistry
  • Plant Stems / chemistry
  • Structure-Activity Relationship

Substances

  • Calcium Channels
  • Cardenolides
  • Glycosides