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  • Title: 4-Phenylcoumarins from Mesua elegans with acetylcholinesterase inhibitory activity.
    Author: Awang K, Chan G, Litaudon M, Ismail NH, Martin MT, Gueritte F.
    Journal: Bioorg Med Chem; 2010 Nov 15; 18(22):7873-7. PubMed ID: 20943395.
    Abstract:
    A significant acetylcholinesterase (AChE) inhibitory activity was observed for the hexane extract from the bark of Mesua elegans (Clusiaceae). Thus, the hexane extract was subjected to chemical investigation, which led to the isolation of nine 4-phenylcoumarins, in which three are new; mesuagenin A (1), mesuagenin C (3), mesuagenin D (4) and one new natural product; mesuagenin B (2). The structures of the isolated compounds were characterized by spectroscopic data interpretation, especially 1D and 2D NMR. Four compounds showed significant AChE inhibitory activity, with mesuagenin B (2) being the most potent (IC(50)=0.7μM).
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