New antioxidant C-glucosylxanthones from the stems of Arrabidaea samydoides


Autoria(s): Pauletti, P. M.; Castro-Gamboa, I; Silva, DHS; Young, MCM; Tomazela, D. M.; Eberlin, M. N.; Bolzani, Vanderlan da Silva
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/10/2003

Resumo

Three new C-glucosylxanthones, 2-(2'-O-trans-caffeoyl)-C-beta-D-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (1), 2-(2'-O-trans-cinnamoyl)-C-beta-D-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (2), and 2-(2'-O-trans-coumaroyl)-C-beta-D-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (3), were isolated from the stems of Arrabidaea samydoides, in addition to three known C-glucosylxanthones, mangiferin (4), 2-(2'-O-benzoyl)-C-beta-D-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (5), and muraxanthone (6). Their chemical structures were assigned on the basis of MS and 1D and 2D NMR experiments. Xanthones 1-6 showed moderate free radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) as well as antioxidant activity evidenced by redox properties measured on ElCD-HPLC.

Formato

1384-1387

Identificador

http://dx.doi.org/10.1021/np030100t

Journal of Natural Products. Washington: Amer Chemical Soc, v. 66, n. 10, p. 1384-1387, 2003.

0163-3864

http://hdl.handle.net/11449/37138

10.1021/np030100t

WOS:000186237800018

Idioma(s)

eng

Publicador

Amer Chemical Soc

Relação

Journal of Natural Products

Direitos

closedAccess

Tipo

info:eu-repo/semantics/article