An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity
AbstractA novel dimer of piceatannol glycoside, named rheumaustralin (1) was isolated from the underground parts of the ethnomedicinal plant Rheum austral (Polygonaceae) collected from Tibet together with 17 known compounds, including rheumin (2), 2,5-dimethyl-7-hydroxychromone (3), 2,5-dimethylchromone-7-O-β-d-glucopyranoside (4), 7-hydroxy-2-(2'-hydroxypropyl)-5-methylchromone (5), torachrysone (6) torachrysone-8-O-β-d-glucopyranoside (7), 4-(4'-hydroxyphenyl)-2-butanone-4'-O-β-d-glucopyranoside (8), amabiloside (9), N-trans-feruloyl tyramine (10), chrysophanol (11), aloe-emodin (12), emodin (13), physcion (14), physcion-1-O-β-d-glucopyranoside (15), emodin-8-O-β-d-glucopyranoside (16), d-catechin (17) and gallic acid (18). Their structures were determined by combined spectroscopic methods and by comparison of their spectral data with those reported in literature. Compounds 1–10 were tested for their ability to scavenge 1, 1-diphenyl-2-picrylhydrazyl (DPPH) radical. View Full-Text
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Hu, L.; Chen, N.-N.; Hu, Q.; Yang, C.; Yang, Q.-S.; Wang, F.-F. An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity. Molecules 2014, 19, 11453-11464.
Hu L, Chen N-N, Hu Q, Yang C, Yang Q-S, Wang F-F. An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity. Molecules. 2014; 19(8):11453-11464.Chicago/Turabian Style
Hu, Lin; Chen, Na-Na; Hu, Qun; Yang, Cui; Yang, Qing-Song; Wang, Fang-Fang. 2014. "An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity." Molecules 19, no. 8: 11453-11464.