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采用基于特征的分子网络,利用Morinagamyces vermicularis的化学多样性

Karen Harms^1,2, Esteban Charria-Girón^1,2, Alberto Miguel Stchigel³

¹Department Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany.

Journal of natural products

|September 16, 2024

概括

研究人员探索了真菌Morinagamyces vermicularis,发现了新的thiodiketopiperazine化合物. 这些天然产品,硫醇D-G,显示中度到弱的抗真菌活性,有助于原始提取物.

科学领域:

自然产品化学自然产品化学
菌类学菌类学是指菌类学.
代谢学代谢学代谢学

背景情况:

*Morinagamyces vermicularis* (Schizotheciaceae家族,Ascomycota属) 进行了生物活性代谢物的选.
最初的查结果显示了moringadepsin和chaetone B,但这些并不能解释原始提取物的观察到的抗真菌活性.

研究的目的:

通过使用先进的分析技术,研究Morinagamyces vermicularis的二次代谢.
为了确定原油提取物的抗真菌活性,负责的化合物.

主要方法:

基于MS/MS的分子网络,用于全面的代谢物分析.
高分辨率质谱 (HRMS) 和核磁共振 (NMR) 用于结构阐明.
针对性准备的高性能液体染色学 (HPLC) 用于隔离.

主要成果:

一个主要的分子家族被假定通过手动MS/MS注释被确定为新的thiodiketopiperazines,与ChemWalker分析形成鲜明对比.
隔离了五种二次代谢物,包括四种新的二氧基基托皮佩拉зин衍生物 (硫醇D-G,化合物1-4) 和已知的硫醇A (化合物5).
化合物1-3和5对测试的菌株表现出中度到弱的抗真菌活性.

结论:

这项研究发现了来自Morinagamyces vermicularis*的新型thiodiketopiperazine衍生物.
隔离的化合物部分解释了真菌提取物观察到的抗真菌特性.
强调了基于NMR的全面结构阐释在代谢学研究中的关键作用.

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