| Mass spectrometry of 1,3- and 1,5-dicaffeoylquinic acids. | |
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MedLine Citation:
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PMID: 15103652 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Samples of 1,3- (1) and 1,5-dicaffeoylquinic acid (2) and their hexaacetate derivatives were examined using positive and negative electrospray ionization mass spectrometry and tandem mass spectrometry. Differences in the various spectra allow the discrimination of each of the isomers. Specific losses in the spectra of 2 also permit the identification of the site of substitution of one of the caffeic acid moieties as being at the 5-position. The spectra of 3,5- (3) and 4,5-dicaffeoylquinic (4) acids and their hexaacetate derivatives were compared with those of 1 and 2 and their derivatives, and differences in ion abundances or the presence/absence of specific ions can be used to identify uniquely each of the compounds. |
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Authors:
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Karl Schram; Petra Miketova; Jiri Slanina; Otakar Humpa; Eva Taborska |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of mass spectrometry : JMS Volume: 39 ISSN: 1076-5174 ISO Abbreviation: J Mass Spectrom Publication Date: 2004 Apr |
Date Detail:
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Created Date: 2004-04-22 Completed Date: 2004-07-21 Revised Date: 2009-10-08 |
Medline Journal Info:
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Nlm Unique ID: 9504818 Medline TA: J Mass Spectrom Country: England |
Other Details:
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Languages: eng Pagination: 384-95 Citation Subset: IM |
Copyright Information:
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Copyright 2004 John Wiley & Sons, Ltd. |
Affiliation:
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Department of Pharmacology/Toxicology, Division of Medicinal and Natural Products Chemistry, College of Pharmacy, University of Arizona, Tucson, Arizona 85721, USA. Schram@pharmacy.arizona.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cinnamates
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analysis*,
chemistry* Magnetic Resonance Spectroscopy Mass Spectrometry / methods* Molecular Conformation Quinic Acid / analogs & derivatives, analysis*, chemistry* Spectrometry, Mass, Electrospray Ionization / methods |
| Chemical | |
Reg. No./Substance:
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0/1,3-dicaffeoylquinic acid; 0/Cinnamates; 1884-23-7/cynarine; 77-95-2/Quinic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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