Antioxidant Potential of Natural and Synthesised Polyprenylated Hydroquinones
作者:Leto-A Tziveleka、Angeliki P Kourounakis、Panos N Kourounakis、Vassilios Roussis、Constantinos Vagias
DOI:10.1016/s0968-0896(01)00346-7
日期:2002.4
The metabolites 2-octaprenyl-1,4-hydroquinone (1) and 2-(24-hydroxy)-octaprenyl-1,4-hydroquinone (2), isolated from the sponge Ircinia spinosula. along with a series of synthetic derivatives, were evaluated for their antioxidant capacity, in order to establish a potential relationship between structural characteristics and antioxidant activity. The antioxidant potential of both natural and synthesised compounds was evaluated in vitro by their ability: (1) to interact with the stable free 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) and (2) to inhibit the peroxidation, induced by the Fe++/ascorbate system, of heat inactivated hepatic microsomal membrane lipids. Metabolite 1 presented a strong interaction with DPPH and had a moderate effect on lipid peroxidation. while metabolite 2 interacted extensively with DPPH and exhibited a significant effect against lipid peroxidation. All derivatives retaining the free 1,4-hydroquinone system maintained fully or partly the free radical scavenging capacity. (C) 2002 Elsevier Science Ltd. All rights reserved.
Bouzbouz, Samir; Kirschleger, Bernard; Villieras, Jean, Bulletin de la Societe Chimique de France, 1997, vol. 134, # 1, p. 67 - 84
作者:Bouzbouz, Samir、Kirschleger, Bernard、Villieras, Jean