Constituintes químicos e atividade antioxidante de Byrsonima gardneriana (Malpighiaceae) Chemical constituents and antioxidant activity of 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 2013-01, Vol.36 (4), p.524-527
Main Authors: Thaísa Leite Rolim, Flávia Talita de Sousa Wanderley, Emídio Vasconcelos Leitão da Cunha, Josean Fechine Tavares, Adriana Maria Fernandes de Oliveira, Temilce Simões de Assis
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