abstract |
Novel piperazine derivatives of the formula I Y-(CmH2m-CHR<1>)n-CO-(NH-CHR<2>-CO)r-Z in which R<1>, R<2>, Y, Z, m, n and r have the meanings indicated in Patent Claim 1, inhibit the binding of fibrinogen to the fibrinogen receptor and can be used for the treatment of thromboses, apoplexy, cardiac infarct, inflammations, arteriosclerosis and tumours. |