African Journal of
Pure and Applied Chemistry

  • Abbreviation: Afr. J. Pure Appl. Chem.
  • Language: English
  • ISSN: 1996-0840
  • DOI: 10.5897/AJPAC
  • Start Year: 2007
  • Published Articles: 357

Full Length Research Paper

Anthocyanidin 3-galactosides from flowers of Abrus canescens Bak

Robert Byamukama1, George Ogweng2, Monica Jordheim3, Øyvind M. Andersen3 and Bernard T. Kiremire1*
1Chemistry Department, Makerere University, P. O. Box 7062, Kampala, Uganda. 2Chemistry Department, Kyambogo University, P. O. Box 1, Kyambogo- Kampala, Uganda. 3Department of Chemistry, University of Bergen, Allegt.41, 5007 Bergen, Norway.
Email: [email protected]

  •  Accepted: 26 July 2011
  •  Published: 30 September 2011

Abstract

Three anthocyanins, the 3-galactoside of delphinidin (1) (8.5 %), petunidin (2) (9.2 %) and malvidin (3) (73.8 %) were isolated from the deep red-purple flowers of Abrus canescensby a combination of chromatographic techniques. Their structures were elucidated by on-line diode array detection chromatography and homo- and hetero-nuclear magnetic resonance (NMR) techniques.

 

Key words: Abrus canescens, Fabaceae, anthocyanin, malvidin 3-galactoside, petunidin 3-galactoside, delphinidin 3-galactoside, taxonomy.