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New triterpenoids with antibacterial activity from Zizyphus joazeiro

Schuhly, W. ; Heilmann, Jörg ; Calis, I. ; Sticher, O.


The stem bark of the Brazilian medicinal plant Zizyphus joazeiro C. Mart. was phytochemically investigated. Three known compounds (betulinic, ursolic and alphitolic acid) and three new derivatives of betulinic acid, 7 beta-(4-hydroxybenzoyloxy)-betulinic acid, 7 beta-(4-hydroxy-3'-methoxybenzoyloxy)-betulinic acid and 27-(4-hydroxy-3'-methoxybenzoyloxy)-betulinic acid which showed a considerable ...


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