abstract |
The present invention provides compounds having a structure according to formula (I), or a salt or solvate thereof, wherein rings A, X, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are defined herein. The invention also provides pharmaceutical compositions comprising the compounds of the invention and methods of making and using the compounds and compositions of the invention, eg, for the treatment and prevention of various disorders, such as Parkinson's disease. |