Cytotoxic Tetrahydroxanthone Dimers from the Mangrove-Associated Fungus Aspergillus versicolor HDN1009.

Cytotoxic Tetrahydroxanthone Dimers from the Mangrove-Associated Fungus Aspergillus versicolor HDN1009.
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DOI:
10.3390/md16090335
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发表时间:
2018-09-14
期刊:
影响因子:
5.4
通讯作者:
Zhang G
Zhang G
中科院分区:
医学2区
文献类型:
--
作者:
Yu G;Wu G;Sun Z;Zhang X;Che Q;Gu Q;Zhu T;Li D;Zhang G

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从红树林真菌 Aspergillus versicolor HDN1009 中分离出三种新的四氢氧杂蒽酮二聚体:5-epi-asperdichrome (1)、versixantones N (2) 和 O (3)。通过 NMR、HRMS 和圆二色性 (CD) 实验阐明了它们的结构,包括绝对构型。其中,化合物1是四氢氧杂蒽酮二聚体的第二个例子,它通过罕见的二芳基醚键形成二聚体,对副溶血弧菌、枯草芽孢杆菌、草分枝杆菌和铜绿假单胞菌表现出良好的抗菌活性,MIC值范围为100 μM至200 μM;而化合物2和3对五种癌细胞系(HL-60、K562、H1975、MGC803和HO-8910)表现出广泛的细胞毒性,IC50值范围为1.7 μM至16.1 μM。
Three new tetrahydroxanthone dimers, 5-epi-asperdichrome (1), versixanthones N (2), and O (3), were isolated from the mangrove-derived fungus Aspergillus versicolor HDN1009. Their structures, including the absolute configurations, were elucidated by NMR, HRMS, and circular dichroism (CD) experiments. Among them, compound 1 was the second example of tetrahydroxanthone dimers, which dimerized by a rare diaryl ether linkage and showed promising antibacterial activities against Vibrio parahemolyticus, Bacillus subtilis, Mycobacterium phlei, and Pseudomonas aeruginosa, with MIC values ranging from 100 μM to 200 μM; whilst compounds 2 and 3 exhibited extensive cytotoxicities against five cancer cell lines (HL-60, K562, H1975, MGC803, and HO-8910), with IC50 values ranging from 1.7 μM to 16.1 μM.
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影响因子: 5.4
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