title: Enantiomeric excess of a cruciferous phytoalexin, spirobrassinin, and its enantiomeric enrichment in an achiral HPLC system.
abstract: 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.
authors.affiliation: Institute for Chemical Reaction Science, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan. kmonde@icrs.tohoku.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Monde
authors.forename: N
authors.initials: N
authors.lastname: Harada
authors.forename: M
authors.initials: M
authors.lastname: Takasugi
authors.forename: P
authors.initials: P
authors.lastname: Kutschy
authors.forename: M
authors.initials: M
authors.lastname: Suchy
authors.forename: M
authors.initials: M
authors.lastname: Dzurilla
mesh_terms: D001937:Brassica / Q000737:chemistry; D002851:Chromatography, High Pressure Liquid; D010936:Plant Extracts / Q000737:chemistry*; D012717:Sesquiterpenes; D013057:Spectrum Analysis; D013141:Spiro Compounds / Q000737:chemistry*; D013237:Stereoisomerism; D013729:Terpenes; D013844:Thiazoles / Q000737:chemistry*; D000094162:Phytoalexins
chemical_list: D010936:Plant Extracts; D012717:Sesquiterpenes; D013141:Spiro Compounds; D013729:Terpenes; D013844:Thiazoles; C417935:spirobrassinin; D000094162:Phytoalexins