Journal
JOURNAL OF NATURAL PRODUCTS
Volume 79, Issue 9, Pages 2397-2402Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jnatprod.6b00639
Keywords
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Funding
- National Natural Science Foundation of China [21472251, 41276146]
- Science & Technology Plan Project of Guangdong Province of China [2013B021100011]
- Key Project of Natural Science Foundation of Guangdong Province [2016A040403091]
- Special Financial Fund of Innovative Development of Marine Economic Demonstration Project [GD2012-D01-001]
- China Postdoctoral Science Foundation [2013M542223]
- China's Marine Commonwealth Research Project [201305017]
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Two new chlorinated preussomerins, chloro-preussomerins A and B (1 and 2), together with nine known preussomerin analogues, 3-11, were obtained from the endophytic fungus Lasiodiplodia theobromae ZJ-HQ1. Their structures were elucidated by a combination of spectroscopic analyses. The absolute configurations of 1 and 2 were both determined by single-crystal X-ray diffraction using Cu K alpha radiation. Chloropreussomerins A and B (1 and 2) are the first chlorinated compounds in the preussomerin family, and preussomerin M (3) is reported for the first time as a natural product. Compounds 1 and 2 showed potent in vitro cytotoxicity against A549 and MCF-7 human cancer cell lines, with IC50 values ranging from 5.9 to 8.9 mu M, and compounds 4-7 exhibited significant bioactivity against A549, HepG2, and MCF-7 human cancer cell lines, with IC50 values of 2.5-9.4 mu M. In the antibacterial assay, compounds 1, 2, 5-7, and 11 exhibited significant activities against Staphylococcus aureus, with MIC values between 1.6 and 13 mu g/mL.
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