Stereochemical Study of Chiral Tautomeric Flavorous Furanones by Vibrational Circular Dichroism
                                
                                    
                                        作者:Yoshihiro Yaguchi、Atsufumi Nakahashi、Nobuaki Miura、Daisuke Sugimoto、Kenji Monde、Makoto Emura                                    
                                    
                                        DOI:10.1021/ol801966t
                                    
                                    
                                        日期:2008.11.6
                                    
                                    2-Substituted-3(2H)-furanone derivatives are industrially significant aroma compounds possessing a unique keto-enol tautomeric feature causing their racemization. Absolute configurations of two flavorous furanones, which have remained unclear for the past 40 years since their discovery, were clarified by the vibrational circular dichroism technique as well as chemical relay reactions. Odor evaluation of each enantiomer revealed relationships between their configurations and their odor activities.