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  • Title: Cytotoxic activity of natural labdanes and their semi-synthetic modified derivatives from Croton oblongifolius.
    Author: Sommit D, Petsom A, Ishikawa T, Roengsumran S.
    Journal: Planta Med; 2003 Feb; 69(2):167-70. PubMed ID: 12624826.
    Abstract:
    Labda-7,12( E),14-triene-17-oic acid, previously isolated from Croton oblongifolius, and its derivatives were investigated for cytotoxicity against five human tumor cell lines. Six of these compounds, labda-7,12( E),14-triene-17-al, 17-hydroxylabda-7,12( E),14-triene, 17-acetoxylabda-7,12( E),14-triene, 15-hydroxylabda-7,13( E)-diene-17,12-olide, labda-7,13( E)-diene-17,12-olide, and 12,17-dihydroxylabda-7,13( E)-diene showed non-specific, moderate, cytotoxicity against all cell lines, whereas the other compounds were inactive.
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