| abstract |
The invention relates to a method of treating or preventing Parkinson's disease in a subject comprising administering a compound of Formula I wherein, R 1 is –NHC(O) C 3-6 cycloalkyl and R 2 is hydrogen; or R 1 and R 2 along with the carbon atoms to which they are attached form a six membered aromatic ring, wherein the ring is substituted with one or more groups selected from hydrogen, halogen and C 1-6 alkyl; R 3 and R 4 are independently selected from group comprising hydrogen, halogen, C 1-3 alkyl, OC 1- n 3 alkyl, NO 2 , SC 1-3 alkyl, C 1-3 haloalkyl, OC 1-3 haloalkyl, and SC 1-3 haloalkyl; or a pharmaceutically acceptable salt thereof. |