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Planta Med 1994; 60(2): 178-180
DOI: 10.1055/s-2006-959446
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© Georg Thieme Verlag Stuttgart · New York

Erysenegalenseins H and I: Two New Isoflavones from Erythrina senegalensis 1

J. Wandji2 , Z. Tanee Fomum2 , F. Tillequin3 , A. L. Skaltsounis3 , M. Koch3
  • 2Department of Organic Chemistry, University of Yaounde, P. O. Box 812 Yaounde, Cameroon
  • 3Laboratoire de Pharmacognosie, U.R.A. au C.N.R.S. N° 1310, Université René Descartes, Faculté de Pharmacie, 4 Avenue l'observatoire, F-75006 Paris, France
1 Part 26 in the series “Erythrina studies”
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Publication History

1993

1993

Publication Date:
04 January 2007 (online)

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Abstract

In addition to the known Compounds senegalensin, lupinifolin, erythrisenegalone, and auriculatin, two new isoflavones named erysenegalensein H and erysenegalensein I were isolated from the dichloromethane extract of the stem bark of Erythrina senegalensis DC. On the basis of spectroscopic methods their structures were elucidated as 5,2′,4′-trihydroxy-8-(γ,γ-dimethylallyl)-2″-hydroxyisopropyldihydrofurano[4″,5″:6,7]-isoflavone and 5,2′,4′-trihydroxy-8-(γ,γ-dimethylallyl)-3″-hydroxy-2″,2″-dimethyldihydropyrano [5″,6″:6,7]-isoflavone, respectively.

Key words

Erythrina senegalensis DC - Leguminosae - erysenegalensein H - erysenegalensein I - isoflavones