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Planta Med 1989; 55(6): 556-558
DOI: 10.1055/s-2006-962094
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© Georg Thieme Verlag Stuttgart · New York

(+)-Catechin-5-galloyl Ester as a Novel Natural Polyphenol from the Bark of Acacia nilotica of Sudanese Origin1

S. A. Khalid2 , S. M. Yagi2 , P. Khristova3 , Helmut Duddeck4
  • 2Department of Pharmacognosy, Faculty of Pharmacy, University of Khartoum, P. O. Box 1996, Khartoum, Sudan
  • 3Department of Forestry, Faculty of Agriculture, University of Khartoum, P. O. Box 32, Khartoum, Sudan
  • 4Ruhr-Universität Bochum, Fakultät für Chemie, Postfach 102148, D-4630 Bochum 1, Federal Republic of Germany
1 Dedicated to the late Prof. H. M. Elamin as a token for our great gratitude for his encouragement and pioneering work on Sudan Acacias
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Publication History

1988

Publication Date:
24 January 2007 (online)

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Abstract

From the bark of Acacia nilotica subsp. tomentosa a novel polyphenol, (+)-catechin-5-galloyl ester (5), was isolated along with gallic acid (1), its methyl ester (2), naringenin (3), and (+)-catechin (4). The structure of 5 was determined by use of mass spectrometry as well as 1H- and 13C-NMR spectroscopy.