Patent ID: 7285553

Claim:
A compound of the formula: R 3 , R 4 are independently H, C 1-3 alkyl, or C 1-3 alkyl substituted optionally with OH or OC 1-3 alkyl; R 7 , R 8 are together with the nitrogen atom to which they are attached form a heterocyclic ring selected from the group consisting of piperazine, which is substituted on carbon with one or more substituents optionally selected from C 1-3 alkyl, C 1-3 alkyl substituted optionally with OH, OC 1-3 alkyl, phenyl which can be unsubstituted or substituted optionally with halogen, CF 3 , OC 1-3 alkyl, or C 1-3 alkyl; R 11 is phenyl or a monocyclic heteroaromatic ring which can be unsubstituted or substituted with C 1-4 alkyl, halogen, OC 1-4 alkyl; R 12 is C 1-4 alkyl or a fused bicyclic heteroaromatic ring selected from the group consisting of thieno[3,2-e]-1,2-thiazine, and 1,2-benzothiazine, or R 12 can be joined to R 11 to form 1,3-dihydro-benzo[c]isothiazole; n is 2 to 4 or a pharmaceutically acceptable salt thereof.