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(4S,5S)- and (4R,5R)-1-Acyl-4,5-dimethoxy-2-imidazolidinone derivatives, wh
ich are readily accessible from simple 1,3-dihydro-2-imidazolone heterocycl
es, represent good candidates for a new class of chiral synthons for use in
the preparation of optically active threo-diamines such as 2S,3R- and 3S,4
S-diamino carboxylic acids. (C) 2001 Elsevier Science Ltd. All rights reser
ved.