质谱学报2011，Vol.32Issue(2)：77-81,5.
仿刺参皂苷类化合物的电喷雾负离子质谱裂解规律研究
Study on the Fragmentation Pathways of Triterpene Glycosides from Apostichopus japonicus Selenka by Negative Electrospray Ionization Mass Spectrometry
摘要
Abstract
The fragmentation pathways of four triterpene glycosides from Apostichopus japonicus Selenka were investigated in negative ion mode by ESI-Q-TOF MS. The [M-H]-ions were observed by ESI-MS, from which the molecular weights were obtained. The collision induced dissociation (CID) data of the [M- H]- ions provide fragmentation pathways of the triterpene glycosides. Results show that four compounds have the same fragmentation pathway. The cleavage is initiated by a loss of 18 (20)-lactone residue from the aglycon, then consecutively loses monosaccharide residue of sugar chain, and finally yields a signature ion peak at m/z 423. These characteristic fragmentations will be helpful in identifying the structures of triterpene glycosides.关键词
仿刺参/皂苷/质谱/裂解规律分类
化学化工引用本文复制引用
于林芳,徐杰,陈士国,薛勇,王静凤,李兆杰,薛长湖..仿刺参皂苷类化合物的电喷雾负离子质谱裂解规律研究[J].质谱学报,2011,32(2):77-81,5.基金项目
国家自然科学基金(31000795),海洋公益性行业科研专项(201105029),国际科技合作项目(2010DFA31330)资助 （31000795）
