Patent ID: 8518938

Claim:
A compound having the formula: or a pharmaceutically acceptable salt thereof, wherein R A is a phenyl ring or 5 to 9 membered heteroaryl ring having up to 2 heteroatoms selected from N, O or S, wherein said phenyl or heteroaryl ring is optionally substituted with up to 2 groups selected from halogen, C 1-5 aliphatic, —NR′C(O)R′, —C(O )N(R′) 2 -OR′, —(CH 2 ) 0-2 N(R′) 2 , tetrahydropyranyl, or piperidinyl; R′ is hydrogen or C 1-4 alkyl; each of R 1 , R 2 , R 3 , and R 4 is, individually, hydrogen, Cl, or F, wherein at least one of R 1 , R 2 , R 3 , and R 4 is Cl or F; R 5 is wherein X is O or NR 5a Y is C 1-4 aliphatic or C 3-6 cycloaliphatic, optionally substituted with R 5c , r is 0 or 1, each of R 5a , R 5b , R 5c , R 5d and R 5e is, independently, hydrogen or C 1-4 aliphatic, wherein R 5a and R 5d or R 5c and R 5d together optionally form a pyrrolidine or piperidine ring, R 5b and R 5c together optionally form a 5-6-membered carbocyclic ring, and R 5d and R 5e together optionally form a pyrrolidine, piperidine or morpholine ring.