Patent ID: 8530452

Claim:
A compound of the following formula I or a pharmaceutically acceptable salt, complex, or tautomer thereof, wherein: R 1 and R 2 are independently H, F, C 1-6 alkyl, C 1-6 (amino)alkyl, aminomethyl, or C 1-6 alkylNH 2 ; and wherein R 3 and R 4 are independently a single substituent or multiple substituents independently selected from H, halo, CN, C 1-6 alkyl, C 1-6 (hydroxy)alkyl, C 1-6 alkylamino, C 1-6 alkoxy, C 1-6 heteroalkyl, C 1-6 haloalkyl, or C 1-6 (amino)alkyl; and wherein Y is O, S, CH 2 , CHF, or CF 2 ; and wherein R 5 is H, halo, CN, OH, or NH 2 .