Abstract: The invention relates to a method of screening compounds having anti-amyloid properties. The method of screening compounds that are capable of dissociating or preventing high-affinity complexes between ?-amyloid peptides and nicotinic acetylcholine receptors of human cortical tissues makes it possible to rapidly identify compounds intended for the curative and/or preventive treatment of neurodegenerative diseases, especially Alzheimer's disease.

Abstract: A compound of formula (I): ##STR1## in which: R.sub.1, R.sub.2, R.sub.3, which are identical or different, represent hydrogen, halogen, alkyl, nitro, cyano, aminosulfonyl, imidazolyl, or pyrrolyl, or alternatively, when two of them are situated on adjacent carbons, may form with the carbon atoms to which they are attached a benzene ring on C.sub.3 -C.sub.7 cyloalkylR.sub.4 represents hydroxyl, alkoxy, phenoxy, or amino,their isomers as well as their addition salts with a pharmaceutically-acceptable base, and medicinal products containing the same which are useful as inhibitors of the the pathological phenomena linked to hyperactivation of the neurotransmission pathways by the excitatory amino acids.

Abstract: A compound of formula (I): ##STR1## in the form of its S enantiomer, its addition salts with a pharmaceutically acceptable acid or base and medicinal product containing the same are useful for the treatment or prevention of pathologies associated with dysfunction of glutamatergic neurotransmission.