Efficient synthesis from d-lyxonolactone of 2-acetamido-1,4-imino-1,2,4-trideoxy-l-arabinitol LABNAc, a potent pyrrolidine inhibitor of hexosaminidases
摘要:
The synthesis from D-lyxonolactone of 2-acetamido-1,4-imino-1,2,4-trideOXY-L-arabinitoI LABNAc proceeded in an overall yield of 25%; the enantiomer, 2-acetamido-1,4-imino-1,2,4-trideoxy-D-arabinitol DABNAc, was prepared from L-lyxonolactone. LABNAc and N-benzyl LABNAc are potent non-competitive inhibitors Of D-hexosaminidase, whereas N-benzyl DABNAc exhibits weak competitive inhibition of the enzyme; this provides further evidence in support of Asano's hypothesis that while Dimino sugar mimics inhibit D-glycohydrolases competitively, their L-enantiomers show non-competitive inhibition and in the case of iminofuranoses L-enantiomers are usually more potent inhibitors. (c) 2007 Elsevier Ltd. All rights reserved.
The invention provides compounds for inhibiting glycosidases, prodrugs of the compounds, and pharmaceutical compositions including the compounds or prodrugs of the compounds. The invention also provides methods of treating diseases and disorders related to deficiency or overexpression of O-GlcNAcase, accumulation or deficiency of O-GlcNAc.