QUAFRINOIC ACIDS: TWO NEW TRITERPENIODS FROM QUASSIA AFRICANA STEM BARK
AbstractFrom 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