Stictic acid derivatives from the lichen Usnea articulata and their antioxidant activities - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Natural Products Année : 2007

Stictic acid derivatives from the lichen Usnea articulata and their antioxidant activities

Résumé

Two new beta-orcinol depsidones, 1 and 2, together with 13 known compounds were isolated from the lichen Usnea articulata. The structures of 1 and 2 were elucidated by spectroscopic analyses and those of known compounds by comparison of their spectroscopic data with literature values or by direct comparison with authentic standards. Compounds 1, 2, and 5 exhibited moderate antiradical activity in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The depsidones 4 and 5 showed better superoxide anion scavenging activity (IC50 = 566 and 580 microM, respectively) than quercetin (IC50 = 754 microM).

Domaines

Chimie

Dates et versions

hal-01470076 , version 1 (17-02-2017)

Identifiants

Citer

Françoise Lohézic-Le Dévéhat, Sophie Tomasi, John A. Elix, Aurélie Bernard, Isabelle Rouaud, et al.. Stictic acid derivatives from the lichen Usnea articulata and their antioxidant activities. Journal of Natural Products, 2007, 70, pp.1218-1220. ⟨10.1021/np070145k⟩. ⟨hal-01470076⟩
109 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More