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Please use this identifier to cite or link to this item: http://hdl.handle.net/10451/3887

Title: Structural elucidation of natural 2-hydroxy di- and tricarboxylic acids and esters, phenylpropanoid esters, and a flavonoid from Autonoë madeirensis using gas-chromatographic/electron ionization, electrospray ionization and tandem mass spectrometric techniques
Authors: Dias, Catarina
Dias, Mário
Borges, Carlos
Almoster Ferreira, M. A.
Paulo, Alexandra
Nascimento, José
Keywords: Autonoë madeirensis
Scilla maderensis
di- and tricarboxylic acids and esters
hydroxycinnamic esters
apigenin diglucoside
Issue Date: 2003
Publisher: Wiley InterScience
Citation: J. Mass Spectrom. 2003; 38: 1240–1244
Abstract: The chemical composition of Autonoë madeirensis bulbs was characterized as part of a systematic phytochemical study of this species. The compounds reported were mainly identified on the basis of gas-chromatographic/electron ionization, electrospray ionization and tandem mass spectrometry. The structures of the pure compounds were also characterized by means of other physical and spectroscopic data (m.p., IR, UV, NMR). The compounds identified were 2-hydroxy di- and tricarboxylic acids and esters (malic acid, citric acid, and their methyl and ethyl esters), cis- and trans-hydroxycinnamic esters (methyl and ethyl p-coumarate, and methyl ferulate), and a new flavone diglucoside (7-O-[Beta-glucosyl-(1→2)-O-Beta-glucosyl]apigenin), the interglucosidic linkage (1→2) of which is, to the best of our knowledge, reported for the first time in a diglucoside of apigenin. The results may contribute to the chemotaxonomy of Autonoë genus and lead to a rapid tool for the systematic characterization of these compounds in plant extracts.
Peer Reviewed: yes
URI: http://dx.doi.org/10.1002/jms.554
http://hdl.handle.net/10451/3887
ISSN: 1076-5174
Publisher version: http://onlinelibrary.wiley.com/doi/10.1002/jms.554/pdf
Appears in Collections:FF-DQFT - Artigos em Revistas Internacionais

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