Bulletin of the Chemical Society of Ethiopia (Apr 2007)

<b>Sigmoiside E: A new antibacterial triterpenoid saponin from <i>Erythrina sigmoidea</i> (Hua)</b>

  • J. Kouam,
  • X. Siewe Noundou,
  • Laure B. Kouitcheu Mabeku,
  • A. Meli Lannang,
  • M. Iqbal Choudhary,
  • Z.T. Fomum

Journal volume & issue
Vol. 21, no. 3
pp. 373 – 378

Abstract

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Chemical analysis of the stem bark of Erythrina sigmoidea (Leguminoseae) yielded two known isoflavones, 6,8-diprenylgenisteine (3) and warangalone (4) as well as a new triterpenoid saponin designated sigmoiside E (1). Its structure was established by chemical and spectroscopic means as 16-O-β-D-galactopyranosyl maniladiol (1). Sigmoiside E exhibited antibacterial activity against gram-negative bacteria.

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