Cytotoxic Polyketides with an Oxygen-Bridged Cyclooctadiene Core Skeleton from the Mangrove Endophytic Fungus Phomosis sp. A818.

Cytotoxic Polyketides with an Oxygen-Bridged Cyclooctadiene Core Skeleton from the Mangrove Endophytic Fungus Phomosis sp. A818.
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DOI:
10.3390/molecules22091547
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发表时间:
2017-09-14
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Shen Y
Shen Y
中科院分区:
其他
文献类型:
--
作者:
Zhang W;Zhao B;Du L;Shen Y

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植物内生微生物代表了一种尚未开发的新的生物活性天然产物资源。从一株红树林内生真菌Phomosis sp. A818中分离得到8种聚酮化合物。这些化合物的结构解析表明,它们在化学结构上具有一个明显的特征,即氧桥环辛烯核心骨架。构效关系的研究表明,化合物1和2中的α,β-不饱和δ-内酯部分对这些化合物的细胞毒活性至关重要。此外,化合物4可能是一种潜在的AMPK(5′-腺苷一磷酸激活蛋白激酶)激动剂。
Plant endophytic microorganisms represent a largely untapped resource for new bioactive natural products. Eight polyketide natural products were isolated from a mangrove endophytic fungus Phomosis sp. A818. The structural elucidation of these compounds revealed that they share a distinct feature in their chemical structures, an oxygen-bridged cyclooctadiene core skeleton. The study on their structure–activity relationship showed that the α,β-unsaturated δ-lactone moiety, as exemplified in compounds 1 and 2, was critical to the cytotoxic activity of these compounds. In addition, compound 4 might be a potential agonist of AMPK (5′-adenosine monophosphate-activated protein kinase).
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