Records of Natural Products

Records of Natural Products

Antioxidant Activities of Hydrolysable Tannins and Flavonoid Glycosides Isolated from Eugenia uniflora L.

Yazarlar: Gilmara A. C. Fortes, Ariadne G. Carvalho, Ruver R. F. Ramalho, Antônio J. R. da Silva, Pe H. Ferri Suzana C. Santos

Cilt 9 , Sayı 2 , 2015 , Sayfalar 251 - 256

Konular:-

Anahtar Kelimeler:Hydrolysable tannins,Camptothin A,Desmanthin-1,Pitanga ,DPPH,ORAC assay

Özet: Aphytochemical investigation of Eugenia uniflora ’s leaf extract resulted in the isolation of eleven phenolic compounds: 2,3-di-O-galloyl- b - D -glucose (1), 1,2,3,4,6-penta-O-galloyl- b - D -glucose (2), gemin D (3), hippomanin A (4), oenothein B (5), eugeniflorin D 2 (6), camptothin A (7), afzelin (8), quercitrin (9), myricitrin, (10) and desmanthin-1 (11). These compounds were identified by spectroscopic methods including 1D- and 2D-NMR, UV, IR, and TOF/MS. Compounds 1, 2, 3, 4, 7, 8, 9, and 11 were isolated from this species for the first time. Ten isolates were evaluated for antioxidant activity by DPPH free radical and Oxygen Radical Absorbance Capacity (ORAC-Fluorecein) assay . Dimeric tannins, oenothein B (5), eugeniflorin D 2 (6), and camptothin A (7) showed a remarkable radical scavenging capacity.

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@article{2015, title={Antioxidant Activities of Hydrolysable Tannins and Flavonoid Glycosides Isolated from Eugenia uniflora L.}, volume={9}, number={251–256}, publisher={Records of Natural Products}, author={Gilmara A. C. Fortes, Ariadne G. Carvalho, Ruver R. F. Ramalho, Antônio J. R. da Silva, Pedro H. Ferri  Suzana C. Santos}, year={2015} }
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Gilmara A. C. Fortes, Ariadne G. Carvalho, Ruver R. F. Ramalho, Antônio J. R. da Silva, Pedro H. Ferri  Suzana C. Santos. (2015). Antioxidant Activities of Hydrolysable Tannins and Flavonoid Glycosides Isolated from Eugenia uniflora L. (Vol. 9). Vol. 9. Records of Natural Products.
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Gilmara A. C. Fortes, Ariadne G. Carvalho, Ruver R. F. Ramalho, Antônio J. R. da Silva, Pedro H. Ferri  Suzana C. Santos. Antioxidant Activities of Hydrolysable Tannins and Flavonoid Glycosides Isolated from Eugenia Uniflora L. no. 251–256, Records of Natural Products, 2015.
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