NEW CYSTEINE DERIVATIVES, PROCESSES FOR THEIR PRODUCTION, AND PHARMACEUTICALS CONTAINING THEM

A compound represented by general formula (I), which binds and inhibits matrix metalloproteinases (MMPs), wherein the cysteine moiety contains an unprotected thiol group, the cysteine moiety is in the L- or D-configuration wherein A denotes -CO-, SO2-, -NH-CO-, or -O-CO-, R1 denotes hydrogen, a linear or branched saturated or unsaturated alkyl group of 1 to 15 carbon atoms or a C1-C15 alkyl group substituted by halogen, mercapto, hydroxy, alkoxy, amino or nitro, or by carbocyclic non aromatic or aromatic ring systems which are optionally substituted once or several times or aromatic or non aromatic heterocycles, optionally substituted, their pharmacologically acceptable salts, or optically active forms thereof. R denotes hydroxy, a linear or branched saturated or unsaturated alkyl group of 1 to 15 carbon atoms or a C1-C15 alkyl group substituted by carbocyclic non aromatic or aromatic ring systems which are optionally substituted once or several times or aromatic or non aromatic heterocycles, optionally substituted, their pharmacologically acceptable salts, or optically active forms thereof, processes for the preparation, pharmaceutical compositions and their use in medicine.