1-1-diphenyl-2-picrylhydrazyl has been researched along with stictic-acid* in 1 studies
1 other study(ies) available for 1-1-diphenyl-2-picrylhydrazyl and stictic-acid
| Article | Year |
|---|---|
Stictic acid derivatives from the lichen Usnea articulata and their antioxidant activities.
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). Topics: Antioxidants; Biphenyl Compounds; Depsides; Free Radical Scavengers; Heterocyclic Compounds, 4 or More Rings; Indonesia; Inhibitory Concentration 50; Lactones; Molecular Structure; Oxepins; Picrates; Quercetin; Superoxides; Usnea | 2007 |