Patent ID: 8680079

Claim:
A compound of the formula in which X is N; Y is C; Z is a bond; R is hydrogen or methyl; R 1 is benzofuranyl, benzothiophenyl, indazolyl, indolyl, pyrrolyl, or oxazolyl optionally mono- or di-substituted with substituents selected from the group consisting of halogen, cyano, trifluoromethoxy, trifluoromethyl, trimethylsilanyl, heterocyclyl and C 1-8 -alkylcarbonyl; or thiazolyl mono- or di-substituted with C 1-8 -alkylcarbonyl R 2 is hydrogen, halogen or C 1 -C 8 alkyl; n is 1; or its salt, a pharmaceutically acceptable salt thereof, or compound in which one or more atoms are replaced by their stable, nonradioactive isotopes.