Cytotoxic and antibacterial sesquiterpenes from Thespesia populnea.
2008
Eight new sesquiterpenoids, named populene A−H (1−8), were isolated from dichloromethane extracts of the wood and dark heartwood of Thespesia populnea, together with 11 known compounds (9−19). Their structures were determined on the basis of spectroscopic analyses. The cytotoxic activity of isolated compounds was evaluated against four cancer cell lines: MCF-7, HeLa, HT-29, and KB. Mansonone E (11) and (+)-gossypol (18) showed significant activities. Their antibacterial properties against Bacillus subtilis, Staphylococcus aureus, and Enterococcus faecalis are also presented.
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