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题名: Characterization of C-glycosyl quinochalcones in Carthamus tinctorius L. by ultraperformance liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry
作者: Jin, Yu1;  Zhang, Xiu-li1;  Shi, Hui2;  Xiao, Yuan-sheng1;  Ke, Yan-xiong2;  Xue, Xing-ya1;  Zhang, Fei-fang1;  Liang, Xin-miao1, 2
刊名: RAPID COMMUNICATIONS IN MASS SPECTROMETRY
发表日期: 2008-04-01
DOI: 10.1002/rcm.3468
卷: 22, 期:8, 页:1275-1287
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Analytical ;  Spectroscopy
研究领域[WOS]: Chemistry ;  Spectroscopy
英文摘要: C-Glycosyl quinochalcones are unique components in Carthamus tinctorius L. The reported C-glycosyl quinochalcones have the same quinochalcone skeleton with a hydroxyl group at the 5'-position and a glucose linked to this position with a carbon-carbon bond. In this study, the standard hydroxysafflor yellow A and water-extracted fraction of Carthamus tinctorius L. were analyzed by ultraperformance liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry (UPLC/Q-TOFMS) in both positive and negative ion modes. The fragmentation pathways of C-glycosyl quinochalcones were interpreted and validated by accurate mass measurement. Their fragmentation showed a special cleavage at the C-C bond except for the typical internal cleavage at the sugar moiety of other C-glycosyl flavonoids. In positive ion mode, cleavage of the 5'-glucose produced an [M+H-162](+) ion by a neutral loss, while cleavage of the 5'-glucose in negative ion mode led to an [M-H-163](-) ion by radical cleavage. The cleavage from the carbonyl group produced fragment ions containing an A or a B ring. The fragment ions containing an A ring were common product ions of seven compounds in both ion modes, and fragment ions containing the B ring were used to judge the different substituent groups at the 3'-position. The fragmentation patterns of seven structurally related C-glycosyl quinochalcones were analyzed systematically and the formation of the fragment ions in two modes is explained in detail in this report. UPLC/Q-TOFMS is an effective tool for characterizing a complex sample, which gives higher resolution separation and generates accurate mass measurement of the product ions. Copyright (c) 2008 John Wiley & Sons, Ltd.
关键词[WOS]: HYDROXYSAFFLOR-YELLOW-A ;  SAFFLOR YELLOW ;  FLOWER PETALS ;  FLAVONOIDS ;  DIFFERENTIATION ;  CONSTITUTION ;  PIGMENTS
语种: 英语
WOS记录号: WOS:000255362300024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140892
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Grad Sch, Dalian 116023, Peoples R China
2.E China Univ Chem Technol, Sch Pharm, Shanghai 200237, Peoples R China

Recommended Citation:
Jin, Yu,Zhang, Xiu-li,Shi, Hui,et al. Characterization of C-glycosyl quinochalcones in Carthamus tinctorius L. by ultraperformance liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry[J]. RAPID COMMUNICATIONS IN MASS SPECTROMETRY,2008,22(8):1275-1287.
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