Patent ID: 8435988

Claim:
A compound of formula (I): wherein R1 is selected from H, C 1-6 alkyl, alkoxy, hydroxy, halogen, —CN, —NH 2 , —NHC(O)Ra, —NHSO 2 Ra, —CO 2 H, —CO 2 Ra, —CONHRb, —CONH 2 , —CH 2 OH, and heteroaryl wherein the heteroaryl may be substituted by one or two C 1-3 alkyl groups; R2 is selected from H, —NHRa, alkoxy, halogen, —CF 3 , —CHF 2 , and C 1-6 alkyl; R3 is selected from aryl and heteroaryl, wherein said aryl or heteroaryl may be substituted by one to three Rc; R4 is selected from H or Ra; each R5 is independently selected from C 1-6 alkyl; each Ra is independently selected from C 1-3 alkyl; Rb is selected from H, C 1-3 alkyl, and SO 2 Me; each Rc is independently selected from C 1-3 alkyl, halogen, —CF 3 , and hydroxy; and n is 0-2, or a pharmaceutically acceptable salt thereof.