Patent ID: 8871765

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof: wherein, R 1 is independently selected from hydrogen, halo, nitro, cyano, or an unsubstituted or substituted group selected from (C 1 -C 12 )alkyl, haloalkyl, cycloalkyl, alkylthio or OS(O) 2 alkyl, where substituents are selected from a member of the group consisting of hydroxy, oxo, halo, thio, nitro, amino, alkyl, alkoxy, haloalkyl and haloalkoxy; n is 1, 2 or 3; X is selected from —O—, —S—, —S(O) 2 —, —SO—, or —NH—; and R 2 is an unsubstituted or substituted group selected from aryl, heteroaryl or heterocyclyl, where (i) substituents on the aryl group are selected from a member of the group consisting of halo, alkyl, alkoxy, hydroxy, haloalkyl, haloalkoxy, cyano, thioalkyl and cycloalkyl, and (ii) substituents on the heteroaryl group or heterocyclyl group are selected from a member of the group consisting of halo, alkyl, alkoxy, hydroxy, haloalkyl, haloalkoxy, aryl, aralkyl, cyano, alkylthio and thioalkyl.