| abstract |
Biologically active derivatives of 2,5-piperazinediones of general formula (I), where R1 = H or C1-C5 alkyl, R2 = H C1-C9 alkyl, hydroxymethyl, phenyl or trimethylene or tetramethylene chain forming a ring with the adjacent nitrogen atom, n = 1 to 3. These derivatives are used for the treatment of memory disorders, tardive dyskinesia and Parkinson's disease. |