Patent ID: 7317035

Claim:
A compound of the formula (I), its tautomeric forms, its stereoisomers, its polymorphs, its pharmaceutically acceptable salts and solvates, wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are the same or different and are each independently selected from the group consisting of hydrogen, halogen, perhaloalkyl, substituted or unsubstituted linear or branched (C 1 -C 3 )alkyl, (C 3 -C 7 ,)cycloalkyl, (C 1 -C 3 )alkoxy, cyclo(C 3 -C 7 )alkoxy, aryl, aryloxy, aralkyl, aralkoxy, heterocycyl, acyl, acyloxy, acylamino, monoalkylamino, dialkylamino, hydroxyalkyl, alkoxyalkyl, aryloxyalkyl, aralkoxyalkyl, alkyithjo, and sulfonic acids, R 13 and R 14 are the same or different and are each independently selected from the group consisting of hydrogen, substituted or unsubstituted linear or branched (C 1 -C 3 )alkyl, and (C 3 -C 7 )cycloalkyl, or R 13 , and R 14 taken together with the nitrogen atom to which they are attached, form a 6 or 7-membered heterocyclic ring, wherein the ring is unsubstituted or substituted, and optionally has one, two or three double bonds or heteroatoms; and n is an integer ranging from 1 to 2.