Constituintes químicos e atividade antioxidante de Byrsonima gardneriana (Malpighiaceae)

The phytochemical investigation of Byrsonima gardneriana led to the isolation of five triterpenes and one flavonoid: D:B-Friedoolean-5-en-3-one (1), friedoolean-14-en-3-one (2), friedelan-3-one (3), lup-20(29)-en-3-ol (4), 3β-hydroxiolean-12-ene (5) and 3,3',4',5,7-pentahydroxyflavan (6)....

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Bibliographic Details
Published in:Química Nova 2013, Vol.36 (4), p.524-527
Main Authors: Rolim, Thaísa Leite, Wanderley, Flávia Talita de Sousa, Cunha, Emídio Vasconcelos Leitão da, Tavares, Josean Fechine, Oliveira, Adriana Maria Fernandes de, Assis, Temilce Simões de
Format: Article
Language:English
Subjects:
antioxidant activity
Byrsonima gardneriana
triterpenes
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Summary:The phytochemical investigation of Byrsonima gardneriana led to the isolation of five triterpenes and one flavonoid: D:B-Friedoolean-5-en-3-one (1), friedoolean-14-en-3-one (2), friedelan-3-one (3), lup-20(29)-en-3-ol (4), 3β-hydroxiolean-12-ene (5) and 3,3',4',5,7-pentahydroxyflavan (6). Their structures were assigned based on spectroscopic analyses, including two-dimensional NMR techniques and comparison with published spectral data. Antioxidant activities of ethanol extract and phases were measured using the 1,2-diphenyl- 2-picryl-hydrazyl (DPPH) free radical scavenging assay, evaluation of total phenolic content and trolox equivalent antioxidant capacity (TEAC).
ISSN:0100-4042
1678-7064
DOI:10.1590/S0100-40422013000400007