Patent ID: 8921392

Claim:
A compound according to Formula IV wherein A is a substituted or unsubstituted chain containing from one to four member atoms selected from the group consisting of carbon, nitrogen, oxygen and sulphur, wherein the chain may be mono- or disubstituted with halogen, cyano, nitro, or C 1 -C 4 alkyl, or the substituted atoms may attach back to the main chain to form a ring; wherein R 1 and R 2 are, independently, hydrogen, hydroxyl, halogen, or cyano; and wherein R 3 is hydrogen, halogen, alkyl, alkenyl, alkynyl, alkoxy, amino, cyano, cycloalkyl, heterocycloalkyl, aryl, C 1 -C 4 alkyl aryl, heteroaryl, C 1 -C 4 alkyl heteroaryl, carbonyl, carbonylamino, thioalkyl, sulfonyl, sulfonylamino, acyl, or carboxyl.