Six new cembranoids, laevigatlactones A-F (1-6), and the known compound neocrotocembraneic acid (7) were isolated from leaves of Croton laevigatus. Their structures were elucidated on the basis of spectroscopic analysis, and that of 1 was confirmed by X-ray crystallography. Compound 2 exhibited modest cytotoxicity against HeLa cells, with an IC(50) value of 38.4 microM.
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| http://dx.doi.org/10.1021/np100044t | DOI Listing |
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