Patent ID: 7186748

Claim:
A compound of the formula (I) and tautomeric forms thereof: wherein R 1 is selected from the group consisting of halogen, alkyl having 1 to 5 carbon atoms, alkoxy having 1 to 5 carbon atoms, hydroxy, alkylsulphonyloxy, cyano, nitro, trihaloalkyl, sulpho, and any of the following structures: wherein R 9 is selected from the group consisting of alkyl having 1 to 5 carbon atoms alkoxy having 1 to 5 carbon atoms, hydroxy and primary amine, and wherein R 6 and R 7 are the same or different and are selected from the group consisting of hydrogen and alkyl having 1 to 5 carbon atoms, and wherein R 2 and R 3 are the same or different and are selected from the group consisting of hydrogen, halogen, alkyl having 1 to 5 carbon atoms, alkoxy having 1 to 5 carbon atoms, hydroxy, alkylsulphonyloxy, cyano, nitro, trihaloalkyl, sulpho, and any of the following structures: wherein R 9 is selected from the group consisting of alkyl having 1 to 5 carbon atoms, alkoxy having 1 to 5 carbon atoms, hydroxy and primary amine, and wherein R 6 and R 7 are the same or different and are selected from the group consisting of hydrogen and alkyl having 1 to 5 carbon atoms; or a pharmaceutically acceptable salt thereof.