Journal article
On-line identification of unstable catalpol derivatives from Jamesbrittenia fodina by LC-mS and LC-NMR.
- Cogne AL Institut de Pharmacognosie et Phytochimie, Université de Lausanne, CH-1015 Lausanne, Switzerland.
- Queiroz EF
- Wolfender JL
- Marston A
- Mavi S
- Hostettmann K
- 2003-04-16
Published in:
- Phytochemical analysis : PCA. - 2003
Chromatography, Liquid
Glucosides
Iridoid Glucosides
Iridoids
Magnetic Resonance Spectroscopy
Mass Spectrometry
Molecular Structure
Plant Components, Aerial
Scrophulariaceae
English
LC-UV-MS analysis of the methanol extract of Jamesbrittenia fodina O. M. Hilliard (Scrophulariaceae) revealed the presence of cinnamic ester derivatives. Two isomeric pairs of these constituents were detected, but could not be isolated. In order to identify these unstable compounds, LC-1H-NMR spectra were obtained for each individual isomer and standard NMR measurements were performed in-mixture. The spectra clearly demonstrated that the fractions consisted of mixtures of cis and trans cinnamoyl catalpol glycoside esters.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1002/pca.689
- PMID 12693629
- Persistent URL
- https://sonar.ch/global/documents/189491
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