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  • Title: ApoE secretion modulating bromotyrosine derivative from the Australian marine sponge Callyspongia sp.
    Author: Tian LW, Feng Y, Shimizu Y, Pfeifer TA, Wellington C, Hooper JN, Quinn RJ.
    Journal: Bioorg Med Chem Lett; 2014 Aug 01; 24(15):3537-40. PubMed ID: 24948562.
    Abstract:
    High throughput screening of a pre-fractionated natural product library identified 11 active fractions showing ApoE modulation activity. Mass-directed fractionation of one active crude extract from the Australian marine sponge Callyspongia sp. resulted in the isolation of 13 metabolites, including three new bromotyrosine derivatives, callyspongic acid (1), 3,5-dibromo-4-methoxyphenylpyruvic acid (2), N-acetyl-3-bromo-4-hydroxylphenylethamine (3), and ten known compounds (4-13). The structure elucidation of compounds 1-3 was based on their 1D and 2D NMR and MS spectroscopic data. 3,5-Dibromo-4-methoxyphenylpyruvic acid (2) showed weak activity in increasing the apolipoprotein E secretion from human CCF-STTG1 cells at the concentration of 40 μM.
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