Elucidation of the fragmentation pathways of a complex 3,7-O-glycosyl flavonol by CID, HCD, and PQD on an LTQ-Orbitrap Velos Pro hybrid mass spectrometer
文献类型：期刊论文
| 作者 | Yang Wenzhi; Wu Wanying ; Yang Min; Guo Dean
|
| 刊名 | Chinese Journal of Natural Medicines
 |
| 出版日期 | 2015 |
| 卷号 | 13期号:11页码:867-872 |
| 关键词 | Flavonol 3,7-O-glycoside LTQ-Orbitrap Fragmentation pathway |
| ISSN号 | 2095-6975 |
| 文献子类 | Article |
| 英文摘要 | The present study was designed to systematically investigate the ESI-MS~n behavior of a complex 3, 7-O-glycosyl flavonol, kaempferol 3-O-alpha-L-[2,3-di-O-beta-D-(6-E-p-coumaroyl)glucopyranosyl]-rhamnopyranosyl-7-O-alpha-L-rhamnopyranoside (KO) isolated from Epimedium wushanense, and to address the elimination priority among different glycosylation sites and different sugars/substituents. The direct-infusion ESI-MS~n experiment of KO was performed on a hybrid LTQ-Orbitrap Velos Pro mass spectrometer in both negative and positive ion modes by three different fragmentation mechanisms (CID, HCD, and PQD). The CID, HCD, and PQD analyses of KO exhibited remarkable discrimination in respect of the scan range, richness, and distribution of product ions through the entire spectra. KO experienced different fragmentation pathways between two ionization modes:the negative mode CID of KO eliminated the glycosyl portions (priority:7-sugar > 3-substituent and terminal substituents > inner sugar) and produced aglycone product ions at m/z 284.03/285.04; however, abundant sodium-adduct B~3_2 together with subsequent ~(i,j)X~3_0 cleavages were found characteristic for the positive mode CID-MS~n. The fragmentation pathways by CID for KO were proposed by analyzing the high accuracy ESI-MS~n data. Complementary structural information of KO regarding the aglycone and glycosyl portions was obtained by analyzing the ESI-MS~n data in both ionization modes. In conclusion, the LTQ-Orbitrap method facilitates highly reliable qualitative analysis of bioactive flavonoids with three alternative fragmentation modes. |
| 资助项目 | supported by Twelfth Five-Year National Science & Technology Support Program[00000000] ; Standardization of Traditional Chinese Medicines/Indigenous drugs sponsored by Chinese Academy of Sciences[00000000] |
| WOS研究方向 | Pharmacology & Pharmacy (provided by Clarivate Analytics) |
| 语种 | 英语 |
| CSCD记录号 | CSCD:5571112 |
| 源URL | [http://119.78.100.183/handle/2S10ELR8/269265]  |
| 专题 | 上海中药现代化研究中心 |
| 通讯作者 | Wu Wanying |
| 作者单位 | Shanghai Research Center for Modernization of Traditional Chinese Medicine, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, National Engineering Laboratory for TCM Standardization Technology. |
| 推荐引用方式 GB/T 7714 | Yang Wenzhi,Wu Wanying,Yang Min,et al. Elucidation of the fragmentation pathways of a complex 3,7-O-glycosyl flavonol by CID, HCD, and PQD on an LTQ-Orbitrap Velos Pro hybrid mass spectrometer[J]. Chinese Journal of Natural Medicines,2015,13(11):867-872. |
| APA | Yang Wenzhi,Wu Wanying,Yang Min,&Guo Dean.(2015).Elucidation of the fragmentation pathways of a complex 3,7-O-glycosyl flavonol by CID, HCD, and PQD on an LTQ-Orbitrap Velos Pro hybrid mass spectrometer.Chinese Journal of Natural Medicines,13(11),867-872. |
| MLA | Yang Wenzhi,et al."Elucidation of the fragmentation pathways of a complex 3,7-O-glycosyl flavonol by CID, HCD, and PQD on an LTQ-Orbitrap Velos Pro hybrid mass spectrometer".Chinese Journal of Natural Medicines 13.11(2015):867-872. |
入库方式： OAI收割
来源：上海药物研究所
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