Hydroxyester disaccharides from fruits of cape gooseberry (Physalis peruviana) |
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Authors: | Mayorga Humberto Duque Carmenza Knapp Holger Winterhalter Peter |
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Institution: | Departamento de Química, Universidad Nacional de Colombia, Bogotá AA 14490, Colombia. |
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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. |
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Keywords: | Physalis peruviana Solanaceae Uchuva Cape gooseberry Aroma precursors Glycosides Hydroxyester glycosides |
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