Patent ID: 8076340

Claim:
A method of treating cognitive impairment associated with schizophrenia or associated with Alzheimer's disease, or attention impairment, comprising administering to a patient in need of said treatment a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt thereof: in which: R is either a hydrogen or halogen atom; or a phenyl group optionally substituted with one or more halogen atoms, or with one or more groups selected from (C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, nitro, amino, di(C 1 -C 3 )alkylamino, trifluoromethyl, trifluoromethoxy, cyano, hydroxyl, acetyl or methylenedioxy groups; or a group selected from pyridinyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, oxazolyl, thiazolyl, oxadiazolyl, thiadiazolyl, thienyl, furyl, isoxazolyl, isothiazolyl, pyrrolyl and naphthyl, it being possible for this group to be optionally substituted with one or more groups selected from halogen atoms, and (C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, trifluoromethoxy, trifluoromethyl, nitro, cyano, hydroxyl, amino, (C 1 -C 6 )alkylamino or di(C 1 -C 6 )alkylamino groups.