A practical synthesis of epimeric C-glycosides of glucofuranose from the cheap gluco-heptono-1,4-lactone is reported; the ring contractions of 2-O-triflates of protected gluco-heptono-1,5-lactones are discussed. No tetrahydropyrancarboxylates were isolated from any of the reactions.
C. J. F. Bichard, T. W. Brandstetter, J. C. Estevez, G. W. J. Fleet, D. J. Hughes and J. R. Wheatley, J. Chem. Soc., Perkin Trans. 1, 1996, 2151 DOI: 10.1039/P19960002151
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