[EN] TRIAZOLOPYRIDAZINE DERIVATIVES FOR TREATING ANXIETY AND ENHANCING COGNITION<br/>[FR] DERIVES DE TRIAZOLOPYRIDAZINE, UTILISE COMME ANXIOLYTIQUES ET AMELIORANTS COGNITIFS
申请人:MERCK SHARP & DOHME
公开号:WO2000012505A2
公开(公告)日:2000-03-09
A compound of formula (I), or a salt or prodrug thereof wherein: Z represents C1-6 alkyl, C3-7 cycloalkyl, C4-7 cycloalkenyl, aryl, C3-7 heterocycloalkyl, heteroaryl, di(C1-6)alkylamino or C6-12 bicycloalkyl, any of which groups may be optionally substituted; R1 represents an optionally substituted five-membered heteroaromatic ring selected from pyrrole, oxazole, thiazole, isoxazole, isothiazole, imidazole, pyrazole, oxadiazole, thiadiazole, triazole and tetrazole; or R1 represents an optionally substituted six-membered heteroaromatic ring selected from pyridine, pyrazine, pyrimidine and pyridazine; and R2 represents cyano(C¿1-6?)alkyl, hydroxy(C1-6)alkyl, C3-7 cycloalkyl(C1-6)alkyl, propargyl, C3-7 heterocycloalkylcarbonyl(C1-6)alkyl, aryl(C1-6)alkyl or heteroaryl(C1-6)alkyl, any of which groups may be optionally substituted; its use in treating anxiety and pharmaceutical compositions comprising it; a subclass of compounds which are useful in enhancing cognition, such as Alzheimer's Disease, is also disclosed.