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Synthesis of doxycycline neoglycosides with product anomeric ratios highlighted within parentheses (α:β). Neoglycosides are roughly organized by size (beginning with tetroses in upper left) and increasing alteration of monosaccharide (vertical). The syntheses of target aminosugar-bearing neoglycosides are also highlighted (lower). Doxycycline neoglycoside is designated as ‘Dx’.
