Cascarosides A and B

Electron-impact and field desorption mass spectrometry, together with NMR and circular dichroism spectroscopy, were used to confirm that cascarosides A and B are C-10 isomers of 8-O-(β-D-glucopyranosy1) barbaloin. Several batches of cascarosides A and B were prepared and oxidatively hydrolyzed to al...

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Veröffentlicht in:	Journal of pharmaceutical sciences 1977-09, Vol.66 (9), p.1300-1303
Hauptverfasser:	Fairbairn, J.W., Evans, F.J., Phillipson, J.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anthraquinones - analysis Anthraquinones - isolation & purification Barbaloin derivatives-cascarosides A and B Barbaloin derivatives—cascarosides A and B electron-impact and field desorption mass spectrometric and NMR and circular dichroism spectroscopic structural identification Cascarosides A and B-electron-impact and field desorption mass spectrometric and NMR and circular dichroism spectroscopic structural identification Chemical Phenomena Chemistry Circular dichroism spectroscopy-structural identification of cascarosides A and B electron impact and field desorption-structural identification of cascarosides A and B electron-impact and field desorption mass spectrometric and NMR and circular dichroism spectroscopic structural identification Emodin - analysis Glucosides - analysis Glucosides - isolation & purification Hydrolysis Magnetic Resonance Spectroscopy Mass Spectrometry Mass spectrometry electron impact and field desorption—structural identification of cascarosides A and B NMR spectroscopy-structural identification of cascarosides A and B Mass spectrometry, electron impact and field desorption—structural identification of cascarosides A and B NMR spectroscopy-structural identification of cascarosides A and B Oxidation-Reduction Plants - analysis
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Beschreibung
Zusammenfassung:	Electron-impact and field desorption mass spectrometry, together with NMR and circular dichroism spectroscopy, were used to confirm that cascarosides A and B are C-10 isomers of 8-O-(β-D-glucopyranosy1) barbaloin. Several batches of cascarosides A and B were prepared and oxidatively hydrolyzed to aloe-emodin. The results are discussed in relation to the assay for cascara given in the European Pharmacopoeia, 1971.
ISSN:	0022-3549 1520-6017
DOI:	10.1002/jps.2600660924