Identification of thiazolidines in guava: stereochemical studies

Autor:	Christine Schippa, Michel Loiseau, Xavier Fernandez, Louisette Lizzani-Cuvelier, Vincent Dompe, S. Rochard, Roland Fellous, Gérard George, Francis Cozzolino, Elisabet Duñach
Rok vydání:	2001
Předmět:	chemistry.chemical_compound Psidium chemistry Thiazolidines Stereochemistry Absolute configuration Epimer General Chemistry Chemical synthesis Two-dimensional nuclear magnetic resonance spectroscopy Cis–trans isomerism Food Science Dichloromethane
Zdroj:	Flavour and Fragrance Journal. 16:274-280
ISSN:	0882-5734
DOI:	10.1002/ffj.996
Popis:	Volatile compounds from guava (Psidium guajava L.) were extracted using dichloromethane. Among these volatile compounds, methyl 2-methyl-thiazolidine-4-(R)-carboxylate (cis and trans) and the ethyl 2-methyl-thiazolidine-4-(R)-carboxylate (cis and trans) could be identified for the first time in fruits. The chemical synthesis of the reference compounds and other analogues allowed the further comparison with the guava extracted thiazolidines. The absolute configuration of the cis/trans isomers was determined by nuclear magnetic resonance (1H-NMR) and by nuclear overhauser enhancement (2D NMR NOESY). Copyright © 2001 John Wiley & Sons, Ltd.
Databáze:	OpenAIRE
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