Venalstonine and Dioxokopsan Derivatives from Kopsia fruticosa.
β Scribed by Toh-Seok Kam; Yeun-Mun Choo
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 12 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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Two new indole alkaloids, viz., arboloscine (1), the first example of a secoleuconoxine, and pericidine (5), an oxidized derivative of pericine (6), were obtained as minor alkaloids from the stem-bark extract of the Malayan Kopsia species, K. arborea. Their structures were established by spectroscop
Three chromonocoumarins ( = 6H,7H- [ l]benzopyrano [4.3-6][ l]benzopyran-6,7-diones) 1-3 have been isolated from the leaves and the root bark of Polygala fruticosa BERG. (syn. Polygala oppositifolia L.; Polygalaceae). The structure of frutinone A (1) was established by X-ray diffraction analysis. Th