One new polyunsaturated acid (1), together with two known compounds, benzodipyran (2) and 7-hydroxy-2-(2-hydroxypropyl)-5-methylchromone (3) were isolated from the fermentation broth of the marine Streptomyces violans (strain HTTA-F04129). Their structures were elucidated on the basis of 1D and 2D NMR, HR-FAB-MS spectra, and IR spectra. Bioassay results showed that compound 1 possessed significant selective antitumor activity against A2780 cell line in vitro with IC50 value 4.36 μM and antibacterial activity against E. coli with MIC value of 25 μg/mL.
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ACKNOWLEDGMENT
This work was supported by the Natural Science Foundation of China (21102020), the National High Technology Research and Development Program (863 Program) of China (2011AA10A202-2), and the National Technologies R&D Program (2011BAE06B04).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2014, pp. 349–351.
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Huang, H., Cao, Y., Tian, L. et al. A New Polyunsaturated Acid from the Marine-Derived Streptomyces violans (No. HTTA-F04129). Chem Nat Compd 50, 402–404 (2014). https://doi.org/10.1007/s10600-014-0970-4
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DOI: https://doi.org/10.1007/s10600-014-0970-4