Betulinic, ursolic and oleanolic acids isolated from the aerial parts of Eriope blanchetii (Lamiaceae) were subjected to different esterification reactions, yielding 12 C-3 position ester derivatives. All compounds were identified using spectroscopic techniques, such as IR, 1H-NMR and MS. The derivatives were further investigated for their antioxidant level, Artemia salina lethality and antimicrobial activity.
This work describes the isolation and quantification of rotenoids from crude organic extracts of different parts of Clitoria fairchildiana R. A. Howard (Leguminosae) by HPLC-DAD. The lipid composition and the Artemia salina cytotoxic activities of the isolates were also conducted. Clitoriacetal (1), 6deoxyclitoriacetal (2), stemonal and stemonone were isolated by chromatographic procedures and identified by usual spectroscopic and spectrometric techniques. Clitoriacetal and 6-deoxyclitoriacetal were not found in all parts of the plant, such as leaves and petals, but in the roots they occur in higher concentration. The activity against brine shrimp revealed that the root extract (LD 50 = 158 ppm) was the more active.
| www.revistafitos.far.fiocruz.br Avaliação do potencial antioxidante e anti-Helicobacter pylori in vitro de extratos de plantas medicinais utilizadas popularmente na região amazônica COMUNICAÇÃO BREVE QUÍMICA Antifungal activities of rotenoids from seeds and roots of Clitoria fairchildiana Atividade antifúngica dos rotenoides das sementes e raiz de Clitoria fairchildiana
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