This invention provides novel compounds useful for the synthesis of peptide mimetics, and describes the use of these compounds for the synthesis of novel reverse turn mimetics. The reverse turn mimetics of the invention have the general structure X wherein the variables are as defined herein.
Peptide mimetics of structure X herein which (i) provide a wide range of sidechain functions at all sidechain positions, (ii) can be incorporated in a peptide sequence, (iii) can be readily synthesized and (iv) have a variety of conformations. There is also provided a novel process which can provide valuable intermediates in relation to production of peptide mimetics of structure X which intermediates have a high degree of chemo- and stereo-selectivity. Preferred mimetics include structures I, II, III, IV, V and VI.