Use a reagent like sodium borohydride or a radical-based method to selectively remove the oxygen atom from the carbon positions you want to modify. This step will depend on which positions you're targeting (2, 3, and/or 6).
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2,3,6-trideoxy-2,3-difluoro-D-neo-inositol
TVB-2640
3
1-Hepten-4-ol, 6-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-3-methyl-7-(phenylmethoxy)-, (3R,4S,6S)-
