Patent ID: 7589097

Claim:
A method of treating a patient suffering from Parkinson's disease comprising administering to the patient an effective dose of a pharmaceutical composition comprising a compound of formula (I) or a pharmaceutically acceptable salt thereof, at least one additional drug useful in the treatment of Parkinson's disease and at least one pharmaceutically acceptable carrier, wherein R 1 is selected from the group consisting of H, alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, halogen, CN, NR 5 R 6 , NR 4 COR 5 , NR 4 CONR 5 R 6 , NR 4 CO 2 R 7 and NR 4 SO 2 R 7 ; R 2 is an aryl attached via an unsaturated ring carbon of said aryl group; R 3 is selected from the group consisting of H, alkyl, COR 5 , CO 2 R 7 , CONR 5 R 6 , CONR 4 NR 5 R 6 and SO 2 R 7 ; R 4 , R 5 and R 6 are independently selected from the group consisting of H, alkyl and aryl, or where R 5 and R 6 are in an NR 5 R 6 group, R 5 and R 6 may be linked to form a heterocyclic group, or where R 4 , R 5 and R 6 are in a (CONR 4 NR 5 R 6 ) group, R 4 and R 5 may be linked to form a heterocyclic group; and R 7 is selected from the group consisting of alkyl and aryl.