Patent ID: 7135476

Claim:
A compound of the formula (I): or a pharmaceutical salt thereof, wherein: m is 0 or 1; n is 0 or 1; R 1 and R 2 each independently is: hydrogen; alkyl; alkoxyalkyl; alkylcarbonyl; phenyl optionally substituted with alkyl, cycloalkyl, cycloalkylalkyl, hydroxyalkyl, halo, nitro, cyano, hydroxy, alkoxy, amino, mono-alkylamino, di-alkylamino, haloalkyl, or haloalkoxy; phenylalkyl, the phenyl portion of which is optionally substituted with alkyl, cycloalkyl, cycloalkylalkyl, hydroxyalkyl, halo, nitro, cyano, hydroxy, alkoxy, amino, mono-alkylamino, di-alkylamino, haloalkyl, or haloalkoxy; cyanoalkyl; alkylsulfonyl; cycloalkylalkyl; or R 1 and R 2 together with their shared nitrogen form a heterocyclic ring of 3 to 7 members optionally substituted with alkyl, cycloalkyl, cycloalkylalkyl, hydroxyalkyl, halo, nitro, cyano, hydroxy, alkoxy, amino, mono-alkylamino, di-alkylamino, haloalkyl, or haloalkoxy; or R 1 and R 2 together with their shared nitrogen form a heteroaryl ring of 5 or 6 members optionally substituted with alkyl, cycloalkyl, cycloalkylalkyl, hydroxyalkyl, halo, nitro, cyano, hydroxy, alkoxy, amino, mono-alkylamino, di-alkylamino, haloalkyl, or haloalkoxy; one of R 3 and R 5 is: hydrogen; alkyl; or alkoxy; and the other of R 3 and R 5 together with R 4 and the atoms to which they are attached form a phenyl optionally substituted optionally substituted with alkyl, cycloalkyl, cycloalkylalkyl, hydroxyalkyl, halo, nitro, cyano, hydroxy, alkoxy, amino, mono-alkylamino, di-alkylamino, haloalkyl, or haloalkoxy; R 6 and R 7 each independently is: hydrogen; alkyl; alkoxy; haloalkyl; or halo; and R 8 is hydrogen or alkyl.