Mass spectrometry of 1,3- and 1,5-dicaffeoylquinic acids

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F04%3A00011442" target="_blank" >RIV/00216224:14110/04:00011442 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Mass spectrometry of 1,3- and 1,5-dicaffeoylquinic acids
Original language description
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 andtheir 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.
Czech name
Hmotnostní spektrometrie 1,3- and 1,5-dicaffeoylchinové kyseliny
Czech description
Vzorky 1,3-dicaffeoylchinové kyseliny a 1,5-dicaffeoylchinové kyseliny a jejich hexaacetylderivátů byly studovány pomocí pozitivní a negativní hmotnostní spektrometrie spojené s ionizací elektrosprejem a tandemovou hmotnostní spektrometrii. Rozdíly v různých spektrech umožňují rozlišení každého izomeru.

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CC - Organic chemistry
OECD FORD branch
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Project
<a href="/en/project/GA303%2F00%2FD062" target="_blank" >GA303/00/D062: Bioavailability and mechanism of antioxidant activity of phenolic acids and lignans</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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