title: Hydroxyester disaccharides from fruits of cape gooseberry (Physalis peruviana).
abstract: The 3-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside of ethyl 3-hydroxyoctanoate and the diastereomeric 3-O-alpha-L-arabinopyranosyl-(1-->6)-beta-D-glucopyranosides of (3R) and (3S)-butyl 3-hydroxybutanoate, respectively, were isolated by chromatographic methods from fruits of cape gooseberry (Physalis peruviana) harvested in Colombia. Their structures were identified by ESI-MS/MS and NMR spectroscopy. The three glycoconjugates can be considered as immediate precursors of ethyl 3-hydroxyoctanoate and butyl 3-hydroxybutanoate, which are important aroma volatiles found in the fruit.
authors.affiliation: Departamento de Química, Universidad Nacional de Colombia, Bogotá AA 14490, Colombia.
authors.forename: Humberto
authors.initials: H
authors.lastname: Mayorga
authors.forename: Carmenza
authors.initials: C
authors.lastname: Duque
authors.forename: Holger
authors.initials: H
authors.lastname: Knapp
authors.forename: Peter
authors.initials: P
authors.lastname: Winterhalter
mesh_terms: D004187:Disaccharides / Q000737:chemistry* / Q000302:isolation & purification; D005638:Fruit / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D019657:Solanaceae / Q000737:chemistry*
chemical_list: D004187:Disaccharides