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Hydroxyester disaccharides from fruits of cape gooseberry (Physalis peruviana)
Humberto Mayorga1, Carmenza Duque, Holger Knapp
1Departamento de Química, Universidad Nacional de Colombia, Bogotá AA 14490, Colombia.
Phytochemistry
|February 7, 2002
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.