Journal
PLANTA MEDICA
Volume 73, Issue 1, Pages 93-96Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2006-957071
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Chromatographic separation of a methanolic extract from his pseudopumila rhizomes led to the isolation of two new natural compounds, irilone 4 -O-[beta-D-glucopyranosyl-(1 -> 6)-beta-D-glucopyranoside] and isoscutellarein 6-C-beta-D-glucopyranoside, along with 9 isoflavonoids and 4 flavonoids. Their structures were determined on the basis of spectroscopic evidence. Isolated compounds were evaluated for their antioxidant activity using the luminol-dependent chemiluminescence assay, with quercetin as a positive control. Irilone 4'-O-beta-D-glucopyranoside and kaempferol 3-O-[alpha-L-rhamnopyranosyl-(1 -> 6)-beta-D-glucopyranoside] showed significant antioxidant activity.
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