Lin Chen, Qin Jian-Chun, Zhang Yong-Gang, Ding Gang
Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100193 P. R. China
Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Henan Joint International Research Laboratory of Drug Discovery of Small Molecules, Huanghe Science and Technology College Zhengzhou Henan 450063 P. R. China.
RSC Adv. 2020 Jan 9;10(4):1946-1955. doi: 10.1039/c9ra10434h. eCollection 2020 Jan 8.
H-NMR spectra provide abundant diagnostic information including chemical shift values, splitting patterns, coupling constants, and integrals. Thus some key functional groups, and even planar structures could be elucidated on the basis of carefully analyzing the corresponding H NMR spectrum. In this paper, the different sub-types of chaetoglobosins are classified according to the structural features, of which the H NMR spectra are systematically summed up. Thus diagnostically analyzing the H-NMR spectra could identify possible sub-types of chaetoglobosins, which could be used for dereplication. According to the analysis of this report, it implies that different new sub-types or new sub-type combinations in the key skeleton of chaetoglobosins might exist in nature. More importantly, dereplication based on H NMR spectral analysis will not only provide a useful approach to determine the chaetoglobosins structures quickly, but also could set a good example for structural dereplication of other NPs.
氢核磁共振谱提供了丰富的诊断信息，包括化学位移值、裂分模式、耦合常数和积分。因此，通过仔细分析相应的氢核磁共振谱，可以阐明一些关键官能团，甚至平面结构。本文根据结构特征对不同亚型的毛壳菌素进行了分类，并对其氢核磁共振谱进行了系统总结。因此，对氢核磁共振谱进行诊断分析可以识别毛壳菌素可能的亚型，可用于去重复。根据本报告的分析，这意味着自然界中可能存在毛壳菌素关键骨架中的不同新亚型或新亚型组合。更重要的是，基于氢核磁共振谱分析的去重复不仅将提供一种快速确定毛壳菌素结构的有用方法，而且还可以为其他天然产物的结构去重复树立一个好榜样。
