A potentially divergent and rapid route to analogues of deoxycyclitols, pentopyranoses, 6-deoxyhexoses, and hexoses

Audouard, Christophe and Fawcett, John and Griffith, Gerry A and Kerouredan, Erwan and Miah, Afjal Hussain and Percy, Jonathan and Yang, Hongli (2004) A potentially divergent and rapid route to analogues of deoxycyclitols, pentopyranoses, 6-deoxyhexoses, and hexoses. Organic Letters, 6 (23). pp. 4269-4272. ISSN 1523-7060 (https://doi.org/10.1021/ol0482902)

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Abstract

Direct precursors to analogues of pentopyranoses, 6-deoxyhexoses, and hexoses, in which a CF2 center replaces the pyranose oxygen, have been synthesized rapidly from trifluoroethanol. A simple scaleable allylation reaction delivers ethers which undergo dehydrofluorination/metalation, followed by addition to either acrolein or cinnamaldehyde, to afford allylic alcohols. Fluorine-assisted [3,3]-rearrangement followed by reduction with sodium borohydride delivers diols, which undergo RCM smoothly to afford cyclohexene diols.