The invention relates to compounds having general formula (I), wherein R representsa group that is selected from pyrazolyl, imidazolyl, triazolyl, oxazolyl, oxadiazolyl,thiazolyl, isothiazolyl, thiadiazolyl, tetrazolyl, said group being optionallysubstituted by one or more groups selected from among halogen atoms, groups (C-C)alkyl,(C-C)alkoxy, trifluoromethoxy, trifluoromethyl,nitro, cyano, hydroxy, amino, (C-C)alkylamino or di(C-C)alkylamino,with a single or double carbon-carbon bond between positions 3 and 4 of the azabicyclooctanering; in the form of a base, an acid addition salt, a hydrate or a solvate. The inventionalso relates to the method of preparing said compounds and to the use of same intherapeutics.