| 摘要 |
Esters and agents including the esters, useful as substrates for esterolytic and/or proteolytic enzymes, said esters being compounds of the general formula: <IMAGE> in which R''1, R''2, R''3 and R''4, which may be the same or different, are hydrogen atoms or lower alkyl, lower alkoxy, alkylamino or dialkylamino radicals or in which two adjacent substituents can also represent a fused benzene ring, A is a residue of an amino acid or of a peptide and B is a nitrogen protective group conventional in peptide chemistry or derived therefrom; and the method of preparation and use. |
