Enantiomeric Excess of a Cruciferous Phytoalexin, Spirobrassinin, and Its Enantiomeric Enrichment in an Achiral HPLC System

Enantiomeric purity of a cruciferous phytoalexin, spirobrassinin (1), was determined by chiral HPLC analysis. The enantiomeric excesses of two natural spirobrassinin fractions separated by nonchiral chromatography were considerably different. A significant enantiomeric enrichment was observed during...

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Veröffentlicht in:	Journal of natural products (Washington, D.C.) D.C.), 2000-09, Vol.63 (9), p.1312-1314
Hauptverfasser:	Monde, Kenji, Harada, Nobuyuki, Takasugi, Mitsuo, Kutschy, Peter, Suchy, Mojmir, Dzurilla, Milan
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Biological and medical sciences Brassica - chemistry Chemistry Chromatographic methods and physical methods associated with chromatography Chromatography, High Pressure Liquid Exact sciences and technology General pharmacology Medical sciences Other chromatographic methods Pharmacognosy. Homeopathy. Health food Pharmacology. Drug treatments Plant Extracts - chemistry Sesquiterpenes Spectrum Analysis Spiro Compounds - chemistry Stereoisomerism Terpenes Thiazoles - chemistry
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Zusammenfassung:	Enantiomeric purity of a cruciferous phytoalexin, spirobrassinin (1), was determined by chiral HPLC analysis. The enantiomeric excesses of two natural spirobrassinin fractions separated by nonchiral chromatography were considerably different. A significant enantiomeric enrichment was observed during the nonchiral chromatographic separation of an artificial enantiomeric mixture of 1.
ISSN:	0163-3864 1520-6025
DOI:	10.1021/np000043t