abstract |
The invention relates to N-alkylated tripeptides of the form mel I. wherein A is the residue of an amino acid, R⁴ together with R⁵ and the atoms carrying them form a heterocyclic ring system, n = 1 or 2 and R, R¹, R² and R³ are hydrogen or a defined residue, process for their preparation, containing them Funds and their use. |