Patent ID: 8252800

Claim:
A compound selected from the group consisting of a compound of Formula I, a pharmaceutically acceptable salt thereof and a stereoisomer thereof: wherein n is 0; wherein R 1 and R 2 are independently selected from the group consisting of: wherein R 3 is selected from the group consisting of H; alkyl; alkenyl; alkynyl; halogen; aryl; heteroaryl containing N, O, or S; NZ 1 Z 2 , wherein Z 1 and Z 2 are independently selected from the group consisting of H and alkyl; and (CO)Y wherein Y is selected from the group consisting of H, alkyl, alkenyl, alkynyl, aryl, heteroaryl containing N, O, or S; and wherein R 4 is selected from the group consisting of H and alkyl.