期刊
MARINE DRUGS
卷 12, 期 4, 页码 2079-2088出版社
MDPI AG
DOI: 10.3390/md12042079
关键词
Penicillium sp; Streptomyces fradiae; co-cultivation; secondary metabolites; cytotoxicity
资金
- NSFC [21172204, 41376148, 81373298]
- 973 of China [2010CB833804]
- 863 Program of China [2013AA092901, 2012AA092104]
- Special Fund for Marine Scientific Research in the Public Interest of China [2010418022-3]
Penicillium sp. WC-29-5 was co-cultured with Streptomycesfradiae 007 to produce five natural products (1-3, 4a and 4b) that were isolated and characterized by spectroscopic analysis. Interestingly, these compounds were found to be different from those produced in discrete fungal and bacterial controls. Among these compounds, the absolute configurations of compounds 4a and 4b were determined for the first time by X-ray single crystal diffraction experiments and electronic circular dichroism (ECD) calculations. An evaluation of the cytotoxic activities of these compounds revealed that 4b was moderately cytotoxic towards HL-60 and H1975 tumor cells with IC50 values of 3.73 and 5.73 mu M, respectively, whereas compound 4a was only moderately cytotoxic towards H1975 cells with an IC50 value of 3.97 mu M.
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