中文摘要：

目的：基于Discovery Studio软件研究五味子乙素的质谱裂解机制。方法：在正离子模式,用线性离子阱质谱得到五味子乙素的质谱图。结果：通过Discovery Studio解析五味子乙素多级质谱碎片,主要发生环的开裂,H2O,-CH3和-OCH3等自由基丢失。结论：本研究丰富五味子乙素的质谱裂解机制,为木脂素类成分的结构鉴定研究提供依据。

英文摘要：

This study was aimed to find the fragmentation pathways of Schisandrin B using the Discovery Studio by electrospray ionization mass spectrometry（ESI-MSn）.The first and multi-stage mass spectrum diagrams were obtained.The results showed that mass spectrometry fragments of Schisandrin B was analyzed under the positive mode,the cracking rings are mainly occurred,and free radicals such as H2O,-CH3 and-OCH3 were lost.It was concluded that this study enriched the mass spectral decomposition,and provided basis for the study on chemical constituents of lignan compounds.