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Title 

Sesquiterpene O-naphthoquinones from the root bark of Ulmus davidiana

Authors 

Jong Pyung KimWon Gon KimH KoshinoJ JungIck Dong Yoo

Publisher 

Elsevier

Issue Date 

1996

Citation 

Phytochemistry, vol. 43, no. 2, pp. 425-430

Keywords 

antioxidative activitydavidianones A-Croot barksesquiterpene o- naphthoquinonesulmaceaeulmus davidiana1,4 naphthoquinone derivative3 hydroxymethyl 6,9 dimethylnaphtho[1,8 b,c]pyran 7,8 dione6 dimethoxymethyl 3,9 dimethylnaphtho[1,8 b,c]pyran 7,8 dione6 methoxycarbonyl 3,9 dimethylnaphtho[1,8 b,c]pyran 7,8 dione

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.

ISSN 

0031-9422

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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