CHROMOGENIC AMINO ACIDS ESTERS AND PEPTIDE ESTERS, PROCESSES FOR THEIRPREPARATION, THE USE OF THESE COMPOUNDS IN ANALYTICAL PROCESSES AND AGENTS FOR THE DETECTION OF ESTEROLYTIC AND/OR PROTEOLYTIC ENZYMES

摘要

ABSTRACT OF THE DISCLOSURECompounds of the general formulain whichX1 and X2 are identical or different and denotenitrogen or sulphur, with the proviso that X1and X2 do not simultaneously represent sulphur;R1 represents hydrogen or an alkyl group;R2 and R3 are identical or different and repre-sent hydrogen or various substituents. A is anaminoacid radical or peptide radical andG represents hydrogen or a nitrogenprotective group.The compounds are useful in the preparation of agentsfor the detection of esterolytic and proteolytic enzymes.