| abstract |
Tripeptide derivatives of the formulain whichX is selected from the group consisting of Pro and PheY is selected from the group consisting of O-R, and NH-R<sub>2</sub> in whichR, is selected from the group consisting of straight, branched and cyclic alkyl group with 1 -12 C atoms, andR<sub>2</sub> is selected from the group consisting of H, straight, branched and cyclic alkyl group with 1 - 12 C atoms, and physiologically acceptable salts thereof.A process for producing said tripeptide derivatives by synthesis and purification methods which are known in the peptide chemistry.Pharamaceutical preparations comprising said tripeptide derivatives. |