Stable amides and oligopeptides derived from methyl . trans,trans-3-azido-4-hydroxymethyl-l-azetidine carboxylate, prepared in 19% yield from diacetone allose, is the first example of a β-amino-azetidine carboxylic acid incorporated into peptidomimetics and provides a scaffold for investigating secondary structure induced by a novel β-amino acid. A number of azetidine iminosugars containing a NHAc substituent were prepared but none of them were β-N-acetylhexosaminidase inhibitors.
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