QUAFRINOIC ACIDS: TWO NEW TRITERPENIODS FROM QUASSIA AFRICANA STEM BARK

EO Ajaiyeoba; HC Krebs

doi:10.4314/njnpm.v7i1.11704

Nigerian Journal of Natural Products and Medicine
Journal / Nigerian Journal of Natural Products and Medicine / Vol. 7 (2003) / Articles

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Published:

Jul 23, 2004

DOI:

10.4314/njnpm.v7i1.11704

Keywords:

africana Simaroubaceae triterpenoids Quafrinoic acids

Issue

Vol. 7 (2003)

Section

Articles

EO Ajaiyeoba

Department of Pharmacognosy, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria

HC Krebs

ZA fur Endokrinologie & Chemie Analytik, Tiererzthiche Hochschule, Bischofsholer Damm 15, 30713 Hannover, Germany.

Abstract

From the stem bark of Quassia africana, two new triterpenoids with the ursolic acid skeleton, characterized as 3-oxo-urs-12-en-27a, 28di-oic acid and its dihydro derivative, 3β-urs-12-en-27α, 28di-oic acid have been isolated. The structures were determined using spectroscopic techniques.

KEY WORDS: Quassia africana; Simaroubaceae; triterpenoids; Quafrinoic acids

Nigerian Journal of Natural Products and Medicine Vol.7 2003: 39-41

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EO Ajaiyeoba

HC Krebs

Abstract

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