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An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity

A 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...

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Autores principales: Hu, Lin, Chen, Na-Na, Hu, Qun, Yang, Cui, Yang, Qing-Song, Wang, Fang-Fang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6271410/
https://www.ncbi.nlm.nih.gov/pubmed/25093985
http://dx.doi.org/10.3390/molecules190811453
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author Hu, Lin
Chen, Na-Na
Hu, Qun
Yang, Cui
Yang, Qing-Song
Wang, Fang-Fang
author_facet Hu, Lin
Chen, Na-Na
Hu, Qun
Yang, Cui
Yang, Qing-Song
Wang, Fang-Fang
author_sort Hu, Lin
collection PubMed
description A 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.
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spelling pubmed-62714102018-12-27 An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity Hu, Lin Chen, Na-Na Hu, Qun Yang, Cui Yang, Qing-Song Wang, Fang-Fang Molecules Article A 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. MDPI 2014-08-04 /pmc/articles/PMC6271410/ /pubmed/25093985 http://dx.doi.org/10.3390/molecules190811453 Text en © 2014 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Hu, Lin
Chen, Na-Na
Hu, Qun
Yang, Cui
Yang, Qing-Song
Wang, Fang-Fang
An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity
title An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity
title_full An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity
title_fullStr An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity
title_full_unstemmed An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity
title_short An Unusual Piceatannol Dimer from Rheum austral D. Don with Antioxidant Activity
title_sort unusual piceatannol dimer from rheum austral d. don with antioxidant activity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6271410/
https://www.ncbi.nlm.nih.gov/pubmed/25093985
http://dx.doi.org/10.3390/molecules190811453
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