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Ascorbic acid and its oxidation products have been implicated in non-enzymatic modification of proteins in aging and diseases of oxidative stress. We have studied the feasibility of using 6-deoxy-6-fluoroascorbic acid (6) for identification of ascorbic acid degradation products by 19 F NMR spectroscopy. Crystals of compound 6 from nitromethane belonged to the space group P2 1 with...
1-Deoxy-d-erythro-hexo-2,3-diulose (1-DG) was prepared by the reaction of ethoxyvinyllithium with an erythronolactone derivative. Characterization by 1 H and 13 C NMR spectroscopy and NOE difference experiments revealed the 2 C 5 -chair β-pyranose as the major isomer in solution. Experiments assessing browning and polymerization reactivity proved 1-DG to be a much...
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