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  • Title: Bioactive sesquiterpene lactones from Centaurea species and their cytotoxic/cytostatic activity against human cell lines in vitro.
    Author: Koukoulitsa E, Skaltsa H, Karioti A, Demetzos C, Dimas K.
    Journal: Planta Med; 2002 Jul; 68(7):649-52. PubMed ID: 12143004.
    Abstract:
    Sesquiterpene lactones isolated from the aerial parts of various species of the genus Centaurea were examined for their in vitro cytotoxic/cytostatic activity against five human cell lines (i. e., DLD1, SF268, MCF7, H460 and OVCAR3). Compounds 1 - 4 were isolated from C. zuccariniana, 5 and 6 from C. achaia, 7 from C. thessala ssp. drakiensis and compounds 8 and 9 from C. deusta. Compound 1, 8alpha- O-(3,4-dihydroxy-2-methylenebutanoyloxy)dehydromelitensine was found to be the most active, exhibited a considerable growth inhibiting activity against three of the cell lines tested, while compound 5 8alpha- O-(3-hydroxy-2-methylenepropanoyl)dehydromelitensin exhibited a growth inhibiting effect against most of the tested cell lines. A new eudesmanolide (8alpha-hydroxysonchucarpolide, 4) was isolated from C. zuccariniana and its structure was elucidated by spectroscopic methods.
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