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Ochrasperfloroid, an ochratoxin–ergosteroid heterodimer with inhibition of IL-6 and NO production from Aspergillus flocculosus 16D-1

机译:ch曲花,,曲霉-麦角类固醇异二聚体,可抑制絮状曲霉16D-1产生IL-6和NO的产生

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A novel ochratoxin–ergosteroid heterodimer, ochrasperfloroid ( 1 ), together with a known mycotoxin, ochratoxin A ( 2 ), were isolated from the sponge-derived fungus Aspergillus flocculosus 16D-1. The structure of 1 was determined on the basis of 1D/2D NMR, HRESIMS/MS, and LC-UV/MS analysis of its alkaline hydrolyzates, quantum-chemical ~(13) C NMR calculation, and comparison with literature data. Of note, the ergosteroid embedded in 1 is also a new structure. Ochrasperfloroid ( 1 ) showed potent inhibitory activity towards IL-6 production in lipopolysaccharide (LPS)-induced THP-1 cell line, with an IC _(50) value of 2.02 μM, and NO production in LPS-activated RAW264.7 macrophages, with an IC _(50) value of 1.11 μM.
机译:从海绵衍生的真菌曲霉曲霉16D-1中分离出一种新型曲霉毒素-麦角类固醇异二聚体曲霉(1)和一种已知的霉菌毒素曲霉毒素A(2)。 1的结构是根据1D / 2D NMR,HRESIMS / MS和其碱性水解产物的LC-UV / MS分析,〜(13)C NMR计算以及与文献数据比较确定的。值得注意的是,嵌入1的麦角类固醇也是一种新结构。 ch柏(1)在脂多糖(LPS)诱导的THP-1细胞系中表现出对IL-6产生的强抑制活性,IC _(50)值为2.02μM,在LPS激活的RAW264.7巨噬细胞中没有NO产生, IC _(50)值为1.11μM。

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