
Journal of Carbohydrate Chemistry p. 797 - 817 (1996)
Update date:2022-08-04
Topics: Synthesis Regioselectivity NMR spectroscopy Nucleophile Electrophile Recrystallization Mass spectrometry (MS) Protecting group Anhydrous conditions Stereoselectivity Ring-Opening Reaction Glycosyl acceptor xylofuranose Anomeric carbon Glycosyl donor Mannofuranose Chromatography (TLC/HPLC) Inert Atmosphere (N?/Ar)
Du, Yuguo
Kong, Fanzuo
Stereospecific synthesis of 1,2-anhydromanno-, lyxo-, gluco-, and xylofuranose perbenzyl ethers was successfully achieved via intramolecular SN2 reaction of the corresponding C-1 alkoxide with C-2 bearing tosyloxy group. The key intermediates, furanose 2-sulfonates, were prepared from the corresponding 1,2-diols and tosyl chloride under phase transfer conditions in good yields. Condensation of the anhydro sugars with 1,2:3,4-di-O-isopropylidene-α-D-galactopyranose or N-benzyloxycarbonyl L-serine methyl ester in the absence of catalyst gave 1,2-trans-linked glycofuranosides in high yield.
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