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  • Title: Alkaloids from the sponge Monanchora unguifera.
    Author: Gallimore WA, Kelly M, Scheuer PJ.
    Journal: J Nat Prod; 2005 Sep; 68(9):1420-3. PubMed ID: 16180828.
    Abstract:
    The bioassay-guided fractionation of the cytotoxic crude gum obtained from the Caribbean sponge Monanchora unguifera led to the isolation and characterization of the new compounds batzelladine J (1) and crambescidic acid (2) in addition to known guanidine alkaloids ptilomycalin A (3a), ptilocaulin (4), and isoptilocaulin (5). The structures of the compounds were elucidated by interpretation of the 1D and 2D NMR experiments. The chemotaxonomic implications of these findings are discussed.
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