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- W1967770982 abstract "Heating of (−)-quinic acid [(−)-1] at reflux temperature with 90% acetic acid/concd. H2SO4 (67/1) yields a mixture of six stereoisomeric quinic acids (four meso forms and two pairs of enantiomers), four γ-quinides (four pairs of enantiomers), and three δ-quinides (two meso forms and one enantiomeric pair). The 1H- and 13C-NMR spectra for most of these compounds are given. The fully trimethylsilylated derivatives of all the compounds are characterized by high-resolution GC/MS. The existence of neo-quinic acid (6), its γ- (10) and δ-lactone (12), of epi-δ-quinide (13), of two meso-quinic acids, and of another γ-quinide is reported for the first time. The structures and configurations of neo-quinic acid, neo-γ-, neo-δ-, and epi-δ- quinide are derived from their NMR spectra. All stereoisomeric quinic acids and their γ-and δ-lactones are also formed under the roasting conditions of coffee." @default.
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- W1967770982 date "1991-10-16" @default.
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- W1967770982 title "New stereoisomers of quinic acid and their lactones" @default.
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- W1967770982 doi "https://doi.org/10.1002/jlac.1991199101177" @default.
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