分子网络和计算性NMR分析揭示了来自虫相关的Xylaria分离物中的六种聚基化杂交物
Seoung Rak Lee1,2, Marie Dayras3, Janis Fricke4
1School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
Communications chemistry
|June 7, 2024
概括
研究人员从虫相关的真菌中发现了新型真菌化合物 - - 糖素. 这些独特的多基化杂交物,包括含有罕见循环碳酸盐的西拉斯波林A,展示了真菌.
科学领域:
- 菌类学 菌类学是指菌类学.
- 自然产品化学 自然产品化学
- 化学生态化学生态学
背景情况:
- 菌是一种高度多样化的王国,具有巨大的未开发潜力,用于新型的二次代谢产物.
- 了解真菌的化学多样性对于生态和药理学应用至关重要.
- 与白相关的真菌代表了独特的自然产品的未经探索的来源.
研究的目的:
- 探索与白相关的真菌的化学多样性,特别是Xylaria属.
- 识别和描述具有潜在药理意义的新型二次代谢物.
- 为了阐明新发现的真菌化合物的生物合成途径.
主要方法:
- 利用MS/MS分子网络来消除真菌代谢物的复制.
- 通过HRMS2和NMR光谱学分离和鉴定了6种新的西拉斯波林衍生物.
- 采用计算方法 (化学转移计算,DP4+分析,TDDFT-ECD) 进行立体化学测定.
- 进行比较基因组学和转录基因组学以推断生物合成途径.
主要成果:
- 鉴定和分离了从Xylaria真菌中获得的六种以前未报告的拉斯波林衍生物.
- 确定了西拉斯波林的相对和绝对配置,包括具有罕见循环碳酸盐部分的西拉斯波林A.
- 通过单个X射线晶体学修改了基亚克雷莫利德B的配置.
- 在生产菌株X802.2中划定了拉斯波林的假定生物合成途径.
结论:
- 这项研究扩大了已知的真菌天然产品的化学多样性,特别是聚基混合物.
- 新型西拉斯波林具有独特的结构特征,表明其具有重要的生态和潜在的药理学作用.
- 生物合成途径的解为这些有价值的化合物的未来代谢工程提供了基础.
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