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On-line identification of unstable catalpol derivatives from Jamesbrittenia fodina by LC-mS and LC-NMR.
- Source :
-
Phytochemical analysis : PCA [Phytochem Anal] 2003 Mar-Apr; Vol. 14 (2), pp. 67-73. - Publication Year :
- 2003
-
Abstract
- 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.
- Subjects :
- Glucosides metabolism
Iridoid Glucosides
Iridoids metabolism
Molecular Structure
Plant Components, Aerial chemistry
Chromatography, Liquid methods
Glucosides analysis
Glucosides chemistry
Iridoids analysis
Iridoids chemistry
Magnetic Resonance Spectroscopy methods
Mass Spectrometry methods
Scrophulariaceae chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 0958-0344
- Volume :
- 14
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Phytochemical analysis : PCA
- Publication Type :
- Academic Journal
- Accession number :
- 12693629
- Full Text :
- https://doi.org/10.1002/pca.689