DISUBSTITUTED PROLINE DERIVATIVES, A PROCESS FOR THEIR PREPARATION AND THEIR USE

摘要

The invention relates to compounds of the formula I < IMG > (I) in which R1 and R2 are identical or different and represent straight-chain or branched alkyl having 1 to 6 carbon atoms or represent (C6 to C10)-aryl, preferably phenyl, or together represent one of the chains -(CH2)n- or -(CH2)p-CH=CH-(CH2)q, n, p and q each being an integer, n being 3-6 and (p+q) being 1-4, and R3 denotes straight-chain or branched alkyl having 1 to 5 carbon atoms or (C6 to C10)-aryl, preferably phenyl, and a process for their preparation and their use. Compounds of the formula I are useful intermediates for the preparation of inhibitors of the angiotension converting enzyme (ACE).