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Synthesis 1993; 1993(7): 720-724
DOI: 10.1055/s-1993-25928
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Deoxyiminoalditols from Aldonolactones; II. Preparation of 1,4-Dideoxy-1,4-iminohexitols with D- and L-Galacto and D- and L-Ido Configuration: Potential Glycosidase Inhibitors

Inge Lundt* , Robert Madsen
  • *Department of Organic Chemistry, The Technical University of Denmark, Building 201, DK-2800 Lyngby, Denmark
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Publication Date:
17 September 2002 (online)

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2,6(1,5)-Dibromo-2,6(1,5)-dideoxyhexitols were prepared by reduction of the corresponding 2,6-dibromo-2,6-dideoxyaldono-1,4-lactones with sodium borohydride. Ring closure of the dibromohexitols with aqueous ammonia gave 1,4-dideoxy-1,4-iminohexitols. The reactions were shown to proceed via epoxides. Thus, 1,4-dideoxy-1,4-imino-L-galactitol (3), the corresponding D-isomer 6, and 1,4-dideoxy-1,4-imino-D-iditol (9) and the L-iditol 12 were prepared as the crystalline hydrochlorides.