Hydroxyester disaccharides from fruits of cape gooseberry (Physalis peruviana).
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.
Mayorga
Humberto
H
Departamento de Química, Universidad Nacional de Colombia, Bogotá AA 14490, Colombia.
Duque
Carmenza
C
Knapp
Holger
H
Winterhalter
Peter
P
D004187:Disaccharides / Q000737:chemistry* / Q000302:isolation & purification; D005638:Fruit / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D019657:Solanaceae / Q000737:chemistry*
D004187:Disaccharides