Patent ID: 7553864

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein: (i) each of R 1 and R 2 independently is hydrogen or alkyl; (ii) R 3 and R 4 taken together with the nitrogen to which they shown attached is benzopyrrolyl; wherein said benzopyrrolyl is substituted with one or two substituents, each substituent being independently selected from the group consisting of aryl and alkynyl; wherein said aryl substituent is unsubstituted or is optionally substituted with one or two moieties selected independently from the group consisting of perhaloalkyl, halo, alkyl, alkoxy, cyano, perhaloalkoxy, and alkynyl moiety, wherein said alkynyl moiety is substituted with an aryl radical; wherein said alkynyl substituent is substituted with an aryl moiety, wherein said aryl moiety is unsubstituted or optionally substituted with one to three radicals selected from the group consisting of perhaloalkyl, halo, alkyl, alkoxy, cyano, and perhaloalkoxy; and (iii) R 5 and R 6 taken together with the nitrogen to which they shown attached is pyrrolodinyl; wherein said pyrrolodinyl is unsubstituted or substituted with an aryl substituent; wherein said aryl substituent is unsubstituted or substituted with one to three moieties independently selected from the group consisting of perhaloalkyl, halo, alkyl, alkoxy, cyano, and perhaloalkoxy.