1,2,5,6-tetrahydropyridine-3-carboxaldehyde oxime derivatives process for their preparation compositions containing them and their use as medicines

Compounds useful in the treatment of Alzheimer's disease, senile dementia, or memory disorders which have the formula in which R represents a hydrogen atom, a linear, branched or cyclic alkyl radical, saturated or unsaturated, containing up to 8 carbon atoms, possibly substituted by a free or esterified carboxy radical or R represents an aralkyl radical containing up to 10 carbon atoms and R' represents a linear or branched, saturated or unsaturated, alkyl radical, containing up to 8 carbon atoms, a radical -COalk1 or a radical -(CH2)2N(alk2)2, alk1 and alk2 representing an alkyl radical containing up to 8 carbon atoms, as well as their addition salts with acids. Also compositions containing the same, method of preparation and method of treatment using the same.