Patent ID: 7317037

Claim:
A compound of formula I: wherein, R 1 is hydrogen, alkyl, substituted alkyl, cycloalkyl, C 3 to C 6 alkenyl, or C 3 to C 6 alkynyl; R 2 and R 3 are each independently selected from the group consisting of hydrogen, C 1 to C 2 alkyl, and substituted C 1 to C 2 alkyl; or R 2 and R 3 are taken together to form a ring and together contain —CH 2 —(CH 2 ) n —CH 2 —; n is 0 or 1; R 4 is fluorine; R 5 is hydrogen; R 6 is hydrogen or halogen; R 7 is hydrogen, alkyl, or halogen; R 8 is hydrogen; R 9 is hydrogen, alkyl, substituted alkyl, or COOR A ; R A is alkyl or substituted alkyl; or a pharmaceutically acceptable salt thereof.