Patent ID: 8765735

Claim:
A compound of formula (I): or a pharmaceutically acceptable form thereof, wherein: R c and R d are joined to form a C 3-10 carbocyclyl spiro-fused ring, and R a and R b are independently selected from the group consisting of —H, “C 7-10 ” alkyl and C 1-10 perhaloalkyl; G is selected from the group consisting of —Br, —I, —F, —Cl, and —OR e ; and R e is selected from the group consisting of C 1-10 alkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 3-10 carbocycyl, C 6-14 aryl, 3-14 membered heterocyclyl and 5-14 membered heteroaryl.