Patent ID: 7138401

Claim:
A compound represented by Formula II, or a polymorph, tautomer, pharmaceutically acceptable salt or prodrug thereof: wherein: R 1 is halogen; R 2 is —NH 2 ; R 3 is hydrogen; R 5 is a phenyl having 3 to 5 substituents, a pyridyl having 3 to 5 substituents or an 1-oxy-pyridyl (N-oxy-pyridyl) having 3 to 5 substituents in which at least one of the substituents is methoxy, and in which at least one of the substituents at the 3 and 5 positions are methoxy or methyl; provided that when R 5 is aryl, R 5 is not an organo-metallic cyclopentadiene; when R 5 is phenyl, the substituents are not 3,5 di-halo; when R 5 is alicycic, the ring system does not contain any tetra-substituted ring carbons; when R 5 is heterocyclic, the ring system does not contain any tetra-substituted ring carbons or the ring system is not a tetra-substituted pyrrolidine.