基于液相色谱-光电二极管阵列-串联质谱的去重复化导向分离19,20-环氧细胞松弛素-N的一种新旋光异构体及其细胞毒性活性
LC-PDA-MS/MS-Based Dereplication Guided Isolation of a New Optical Isomer of 19,20-Epoxycytochalasin-N and Its Cytotoxic Activity.
作者信息
Kushwaha Manoj, Qayum Arem, Sharma Nisha, Abrol Vidushi, Choudhary Poonam, Murtaza Mohd, Singh Shashank K, Vishwakarma Ram A, Goutam Umesh, Jain Shreyans K, Jaglan Sundeep
机构信息
Fermentation & Microbial Biotechnology Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu 180001, India.
Department of Biotechnology, Guru Nanak Dev University, Amritsar 143001, Punjab, India.
出版信息
ACS Omega. 2022 Aug 10;7(33):29135-29141. doi: 10.1021/acsomega.2c03037. eCollection 2022 Aug 23.
The - extract was subjected to detailed liquid chromatography tandem mass spectrometry studies. A total of 38 peaks were annotated to / 508.26, / 510.28, / 524.26, / 526.28, / 540.26, / 542.27, and / 584.28 [M + H]. The accurate mass, mutually supported UV/vis spectra, and database search identified these compounds as cytochalasins. Systematic dereplication helped identify a peak at / 540.26 [M + H] as the new compound. Further, the identified compound was purified by high-performance liquid chromatography and characterized by 2D NMR to be 19,20-epoxycytochalasin N1, a new optical isomer of 19,20-epoxycytochalasin-N. It exhibited substantial cytotoxicity with IC values ranging from 1.34 to 19.02 μM. This study shows a fast approach for dereplicating and identifying novel cytochalasin metabolites in crude extracts.
该提取物进行了详细的液相色谱串联质谱研究。总共38个峰被注释为/ 508.26、/ 510.28、/ 524.26、/ 526.28、/ 540.26、/ 542.27和/ 584.28 [M + H]。精确质量、相互支持的紫外/可见光谱以及数据库检索将这些化合物鉴定为细胞松弛素。系统的去重复操作有助于将/ 540.26 [M + H]处的一个峰鉴定为新化合物。此外，通过高效液相色谱对鉴定出的化合物进行纯化，并通过二维核磁共振对其进行表征，确定其为19,20 - 环氧细胞松弛素N1，是19,20 - 环氧细胞松弛素 - N的一种新的光学异构体。它表现出显著的细胞毒性，IC值范围为1.34至19.02 μM。本研究展示了一种在粗提物中对新型细胞松弛素代谢物进行去重复和鉴定的快速方法。
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