An extract of Petradoria pumila from the Natural Products Discovery Institute was found to have moderate antiplasmodial activity, with an IC value between 5 and 10 μg/mL. The four new diterpenoids petradoriolides A-D (1-4), the new benzotropolone petradoriolone (5), and the two known lignans 6 and 7 were isolated after bioassay-directed fractionation. The structures and stereochemistries of the new compounds were determined by interpretation of NMR spectroscopy, mass spectrometry, and ECD spectra. Among these compounds, petradoriolide C (3) displayed the most potent antiplasmodial activity, with an IC value of 7.3 μM.
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http://dx.doi.org/10.1021/acs.jnatprod.8b00135 | DOI Listing |
J Nat Prod
May 2018
Department of Chemistry and the Virginia Tech Center for Drug Discovery, M/C 0212 , Virginia Tech , Blacksburg , Virginia 24061 , United States.
An extract of Petradoria pumila from the Natural Products Discovery Institute was found to have moderate antiplasmodial activity, with an IC value between 5 and 10 μg/mL. The four new diterpenoids petradoriolides A-D (1-4), the new benzotropolone petradoriolone (5), and the two known lignans 6 and 7 were isolated after bioassay-directed fractionation. The structures and stereochemistries of the new compounds were determined by interpretation of NMR spectroscopy, mass spectrometry, and ECD spectra.
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