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  • Title: seco-Abietane diterpenoids, a phenylethanoid derivative, and antitubercular constituents from Callicarpa pilosissima.
    Author: Chen JJ, Wu HM, Peng CF, Chen IS, Chu SD.
    Journal: J Nat Prod; 2009 Feb 27; 72(2):223-8. PubMed ID: 19193025.
    Abstract:
    Six new compounds, including five new seco-abietane diterpenoids, 12-deoxy-seco-hinokiol methyl ester (1), 12-deoxy-11,12-dihydro-seco-hinokiol methyl ester (2), callicarpic acid A (3), 9alpha-hydroxycallicarpic acid A (4), and callicarpic acid B (5), and a new phenylethanoid derivative, 4-hydroxyphenethyl tetradecanoate (6), have been isolated from the leaves and twigs of Callicarpa pilosissima, together with 14 known compounds (7-20). The structures of these new compounds were determined through analyses of physical data. 12-Deoxy-11,12-dihydro-seco-hinokiol methyl ester (2), callicarpic acid B (5), and alpha-tocopherol trimer B (15) exhibit antitubercular activities (MICs <or= 63.6 microM) against Mycobacterium tuberculosis H(37)Rv in vitro.
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