Boron NMR as a Method to Screen Natural Product Libraries for B-Containing Compounds.
Boron NMR as a Method to Screen Natural Product Libraries for B-Containing Compounds.
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DOI：
10.1021/acs.orglett.2c00885
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发表时间：
2022-05-06
期刊：
影响因子：
5.2
通讯作者：
MacMillan JB
中科院分区：
文献类型：
--
作者：
Macho JM;Blue RM;Lee HW;MacMillan JB
天然产物是用于生物医学和生物技术的生物相关代谢产物。已知天然产物的频繁重新分离质疑现有的发现模型是否仍然能够识别新的化合物。由于创新的基于NMR的筛选技术可以帮助克服这些挑战，我们将相位循环复合脉冲序列应用于11B NMR实验，以提高其筛选新含硼分子库的灵敏度。作为概念的证明，通过其硼信号，在粗品和增强的微生物级分中检测到无质体霉素和自诱导物-2。随后，随机选择21种天然植物和50种天然海洋微生物提取物的筛选，并使用优化的11B实验分析作为高通量发现方法的可行性。8个植物样品和13个微生物样品被鉴定为含硼，这表明由于缺乏适当的发现方法，天然来源的硼代谢物比以前已知的更高。因此，我们相信，这种优化的11B NMR实验可以作为一个强大的方法，快速，简便地发现新的含硼代谢物从各种天然来源。
Natural products are biologically relevant metabolites exploited for biomedicine and biotechnology. The frequent reisolation of known natural products questions whether existing discovery models are still capable of identifying novel compounds. As innovative NMR-based screening techniques can help overcome these challenges, we applied a phase cycling composite pulse sequence to 11B NMR experiments to enhance their sensitivity to screen libraries for novel boron-containing molecules. Aplasmomycin and autoinducer-2 were detected in crude and enhanced microbial fractions, via their boron signals, as proof of concept. Subsequently, a screen of 21 crude plant and 50 crude marine microbial extracts were chosen at random and analyzed with the optimized 11B experiment for feasibility as a high throughput discovery method. Eight of the plant samples and 13 of the microbial samples were identified as boron-containing, suggesting that there is a higher presence of boron metabolites available from natural sources than previously known due to a lack of appropriate discovery methods. As a result, we believe that this optimized 11B NMR experiment can serve as a robust method for quick and facile discovery of novel boron-containing metabolites from a variety of natural sources.
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