Use of derivatives of oxalyl-amino acids as drugs for inhibition of prolyl hydroxylase.

The invention relates to acid derivatives oxalyl AND AMINO of formula I wherein r '' are the same or different and C SUB 1 IFICA hydrogen, C SUB March 1 ILO, SH, NH SUB 2 O HALOGEN, where the remains of alkyl unsubstituted aryl ARE OH, SH or substituents SUB NH 2, OR HIGH 1 YR (squared) together represent an alkylene chain C 2 MIND SUB FORMS DYL as well as physiologically acceptable salts RESISTANT. The combinations are characterized by poly-L-PERFECTOS INHIBITORS LISIN-HIDROXILASE.