The stem barks of the plant Hymenocardia acida Tul. (Hymenocardiaceae) has yielded five triterpenoids which were identified by spectroscopic methods as friedelan-3-one, betulinic acid, lupeol, β-sitosterol, stigmasterol and the fatty acid, oleic acid. These compounds are being reported for this plant material for the first time.
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Igoli et al. (2008) studied this question.
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