Patent ID: 8809382

Claim:
A compound of Formula II: wherein: X 1 , X 2 , X 3 and X 4 are independently selected from the group consisting of H, halogen, alkyl group, aralkyl group and OR 5 wherein R 5 is selected from the group consisting of H, acyl, alkyl, aralkyl, alkenyl, alkoxy, aryl, haloalkyl, cycloalkyl, haloalkoxy, heterocycloalkyl, cycloalkenyl and heterocycloalkenyl, any of which may be optionally substituted; and i) R 3 is selected from H and an alkyl group having 4 or more carbon atoms, one of R 1 or R 2 is an alkyl group having 4 or more carbon atoms and optionally substituted with C 6-16 aryl, or C 3-7 cycloalkyl, and the other of said R 1 or R 2 is or ii) R 3 is and R 1 is selected from H and an alkyl group having 4 or more carbon atoms, and R 2 is an alkyl group having 4 or more carbon atoms and optionally substituted with C 6-16 aryl, or C 3-7 cycloalkyl; or iii) R 1 , R 2 and R 3 are each selected from H and an alkyl group having 4 or more carbon atoms, wherein at least one of R 1 , R 2 and R 3 is an alkyl group having 4 or more carbon atoms, and at least one of R 1 , R 2 and R 3 is or a pharmaceutically acceptable salt thereof.