title: 3-Methylbutanoyl and 3-methylbut-2-enoyl disaccharides from green coffee beans (Coffea arabica).
abstract: Three 3-methylbutanoyl and 3-methylbut-2-enoyl disaccharides isolated from green coffee beans (Coffea arabica) were identified as 3-methylbutanoyl-1-O-beta-D-glucopyranosyl-beta-D-apiofuranoside, 3-methylbutanoyl-6-O-alpha-D-glucopyranosyl-beta-D-fructofuranoside, and 3-methylbut-2-enoyl-1-O-beta-D-glucopyranosyl-beta-D-apiofuranoside. The structures were established by one- and two-dimensional 1H and 13C NMR spectra as well as by ESI MS/MS spectra.
authors.affiliation: Lehrstuhl für Lebensmittelchemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Bernhard
authors.initials: B
authors.lastname: Weckerle
authors.forename: Tamás
authors.initials: T
authors.lastname: Gáti
authors.forename: Gábor
authors.initials: G
authors.lastname: Tóth
authors.forename: Peter
authors.initials: P
authors.lastname: Schreier
mesh_terms: D000215:Acylation; D002845:Chromatography / Q000379:methods; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D040503:Coffea / Q000737:chemistry*; D004187:Disaccharides / Q000737:chemistry* / Q000302:isolation & purification; D005002:Ethiopia; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D013058:Mass Spectrometry / Q000379:methods; D000442:Octanols / Q000737:chemistry; D000439:Pentanols / Q000737:chemistry*; D010936:Plant Extracts; D021241:Spectrometry, Mass, Electrospray Ionization; D013057:Spectrum Analysis
chemical_list: D004187:Disaccharides; D000442:Octanols; D000439:Pentanols; D010936:Plant Extracts