Ehretianone, a Novel Quinonoid Xanthene from Ehretia buxifolia with Antisnake Venom Activity
- 1 January 1996
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Natural Products
- Vol. 59 (7) , 664-667
- https://doi.org/10.1021/np960355p
Abstract
Ehretianone (1), a new quinonoid xanthene, together with known sterols, was isolated from a MeOH extract of the root bark of Ehretia buxifolia. The structure of ehretianone was elucidated as 7-hydroxy-9a alpha-(3-methylbut-2-enyl)-4a alpha,9 alpha-(2-methylprop-2-enyl)-4a, 9a-dihydro-1,4-dioxoxanthene on the basis of spectroscopic data and X-ray crystallographic analysis. The antisnake venom activity of ehretianone against Echis carinatus venom in mice is also reported.Keywords
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