Patent ID: 7259156

Claim:
A compound having a structure according to formula III or a pharmaceutically acceptable salt thereof, wherein Q 3 is selected from the group consisting of R 1 is C 1 -C 5 alkyl, C 1 -C 5 alkenyl, C 1 -C 5 alkynyl, CH 2 CN, or CH 2 CONH 2 ; R 5 is H, OR 8 , halogen, OC(═O)R 8 , O(C═O)N(R 8 R 9 ), OSO 2 R 10 , or O(C═O)NHSO 2 N(R 8 R 9 ); R 6 is H or halogen; or R 5 and R 6 combine to form ═O or ═NOR 8 ; each R 8 is independently H, C 1 -C 5 alkyl, C 2 -C 5 alkenyl, C 2 -C 5 alkynyl, or C 3 -C 6 cycloalkyl; each R 9 is independently H, C 1 -C 5 alkyl, C 2 -C 5 alkenyl, C 2 -C 5 alkynyl, or C 3 -C 6 cycloalkyl; R 8 and R 9 form, in combination with a nitrogen atom to which they are commonly attached, a 3, 4, 5, or 6 membered heterocyclic ring, which is an aziridinyl, azetidinyl, pyrrolidinyl. or piperidinyl ring; R 10 is C 1 -C 5 alkyl, C 2 -C 5 alkenyl, C 2 -C 5 alkynyl, or C 3 -C 6 cycloalkyl; R 11 is H, C 1 -C 5 alkyl, C 2 -C 5 alkenyl, C 2 -C 5 alkynyl; and X is a pharmaceutically acceptable counteranion.