Sesquiterpene O-naphthoquinones from the root bark of Ulmus davidiana

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Title
Sesquiterpene O-naphthoquinones from the root bark of Ulmus davidiana
Author(s)
Jong Pyung KimWon Gon Kim; H Koshino; J Jung; Ick Dong Yoo
Bibliographic Citation
Phytochemistry, vol. 43, no. 2, pp. 425-430
Publication Year
1996
Abstract
Three new sesquiterpene ortho-naphthoquinones, davidianones A, B and C, together with four known compounds, mansonones E, F, H and I, were isolated from the root bark of Ulmus davidiana. On the basis of spectral data including pulse field gradient two-dimensional NMR spectroscopy, the structures of new compounds were established as 3-hydroxymethyl-6,9- dimethylnaphtho(1,8-b,c)pyran-7,8-dione, 6-methoxycarbonyl-3,9- dimethylnaphtho(1.8-b,c)pyran-7,8-dione, 6-dimethoxymethyl-3,9- dimethylnaphtho(1,8-b,c)pyran-7,8-dione, respectively. Their antioxidative activities were evaluated by a thiobarbituric acid method using rat liver microsomes, with mansonone F showing the greatest activity.
Keyword
davidianones A-Croot barksesquiterpene o- naphthoquinonesulmaceaeulmus davidianaantioxidative activity
ISSN
0031-9422
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/0031-9422(96)00279-8
Type
Article
Appears in Collections:
Ochang Branch Institute > Natural Product Research Center > 1. Journal Articles
Division of Research on National Challenges > Infectious Disease Research Center > 1. Journal Articles
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