Abstract

Oligostilbenes have attracted much interest due to their intricate structures and diverse bioactivities. In this study, two stilbene dimers, (−)-7,8-cis-ε-viniferin (1) and carasiphenol A (2), and two trimers, suffruticosol A (3) and suffruticosol C (4), were investigated by electrospray ionization ion-trap time-of-flight multistage mass spectrometry (ESI-IT-TOF-MSⁿ). Based on the MSⁿ study, the fragmentation pathways and diagnostic ions of four oligostilbenes in both positive and negative modes were proposed. The consecutive elimination of phenol (C₆H₆O) and resorcinol (C₆H₆O₂) moieties were the particular dissociation for oligostilbenes due to the presence of 1,2-diphenylethylene nucleus. The present MSⁿ fragmentation study will provide valuable information for the fast characterization of oligostilbenes from complicated natural mixtures.

Graphical Abstract

中文翻译：

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电喷雾串联质谱法对四种寡丁香的片段化研究

摘要

寡头戊二烯由于其复杂的结构和多种生物活性而引起了人们的极大兴趣。在这项研究中，二茋二聚物，（ - ） - 7,8-顺式- ε -viniferin（1）和carasiphenol A（2），和两个三聚体，suffruticosol A（3）和suffruticosol C（4）中，通过调查电喷雾电离离子阱飞行时间多级质谱（ESI-IT-TOF-MS ⁿ）。在MS ⁿ研究的基础上，提出了四种正，负两种寡苯乙烯的片段化途径和诊断离子。连续消除苯酚（C ₆ H ₆ O）和间苯二酚（C由于存在1，2-二苯基乙烯核，所以₆ H ₆ O ₂）部分是低聚对苯二酚的特定解离。目前的MS ⁿ裂解研究将为从复杂的天然混合物中快速鉴定寡苯乙烯类化合物提供有价值的信息。

图形概要