PIPERAZINEDIONES HAVING A PSYCHOTROPIC ACTION

The invention relates to compounds of the formula I (I) in which R1, R2 and R4 represent optionally substituted aliphatic, alicyclic, alicyclic-aliphatic, aromatic, araliphatic, heteroaromatic or heteroaromatic-aliphatic radicals, with R2, if not already covered by the above-mentioned definitions, d...

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Bibliographic Details
Main Authors ULRICH LERCH, GABRIELE WIEMER, RAINER HENNING, HANSJOERG URBACH, FRANZ HOCK, WOLFGANG RUEGER, WOLF-ULRICH NICKEL
Format Patent
LanguageEnglish
Published 30.05.1990
Edition5
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PEPTIDES
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Summary:The invention relates to compounds of the formula I (I) in which R1, R2 and R4 represent optionally substituted aliphatic, alicyclic, alicyclic-aliphatic, aromatic, araliphatic, heteroaromatic or heteroaromatic-aliphatic radicals, with R2, if not already covered by the above-mentioned definitions, denoting the side-chain, which is protected if necessary, of a naturally occurring alpha -amino acid, R4 can additionally represent R3 denotes an optionally substituted aliphatic, alicyclic, aromatic or araliphatic radical, or R3 and R4 form, together with the atoms carrying them, a mono-, bi- or tricyclic heterocyclic ring system, agents containing these, and the use thereof as pharmaceuticals having a psychotropic action for the prophylaxis of disorders of the central nervous system, especially having a nootropic action for the treatment of cognitive dysfunctions.
Bibliography:Application Number: ZA19890006717