- Cytotoxic quassinoids and tirucallane-type triterpenes from the woods of Eurycoma longifolia
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New cytostatic quassinoids, 6α-hydroxyeurycomalactone (1), longilactone (2) and 14,15β-dihydroxyklaineanone (3) were isolated from the woods of Eurycoma longifolia (Simaroubaceae) with three cytotoxic quassinoids, 11-dehydroklaineanone (4), eurycomalactone (5) and 5,6-dehydroeurycomalactone (6), and with seven cytotoxic tirucallane-type triterpenes, niloticin (7), dihydroniloticin (8), piscidinol A (9), bourjotinolone A (10), 3-episapelin A (11), melianone (12) and hispidone (13). All of them showed potent cytotoxic activity against P388 and KB cells.
- Itokawa,Kishi,Morita,Takeya
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p. 1053 - 1055
(2007/10/02)
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