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DOI: 10.1055/s-2007-981619
© Georg Thieme Verlag KG Stuttgart · New York
Two New Benzofurans from Gastrodia elata and their DNA Topoisomerases I and II Inhibitory Activities
Publication History
Received: February 16, 2007
Revised: July 14, 2007
Accepted: August 20, 2007
Publication Date:
20 September 2007 (online)
![](https://www.thieme-connect.de/media/plantamedica/200712/lookinside/thumbnails/10.1055-s-2007-981619-1.jpg)
Abstract
Two new benzofurans, 1-furan-2-yl-2-(4-hydroxyphenyl)-ethanone (1) and 5-(4-hydroxybenzyloxymethyl)-furan-2-carbaldehyde (2), together with five known compounds, 4-hydroxybenzyl methyl ether (3), 5-(hydroxymethyl)-furfural (4), gastrodin (5), β-sitosterol (6) and β-sitosterol glucoside (7) were isolated from the rhizome of Gastrodia elata Blume. In DNA topoisomerase I and II inhibition assays in vitro at a concentration of 20 μM, 1 showed potent inhibitory activity, 66 % and 71 % inhibition, respectively, compared to the positive control compounds, camptothecin and etoposide, 71 % and 22 % inhibition, respectively. All of these compounds exhibited weak or no cytotoxicities against human colon carcinoma cell line (HT-29), human breast carcinoma cell line (MCF-7) and human hepatocellular carcinoma cell line (HepG-2).
Key words
Gastrodia elata - Orchidaceae - benzofurans - topoisomerases I and II inhibition
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Prof. Dr. Jong-Keun Son
College of Pharmacy
Yeungnam University
Gyongsan 712-749
Republic of Korea
Phone: +82-53-810-2817
Fax: +82-53-810-4654
Email: jkson@yu.ac.kr
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