THIS INVENTION IS DIRECTED TO A METHOD FOR PREVENTING OR TREATING MOVEMENT DISORDERS COMPRISING ADMINISTERING TO A SUBJECT IN NEED THEREOF A THERAPEUTICALLY EFFECTIVE AMOUNT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF FORMULA (I) AND FORMULA (II)；@@FORMULA (I)FORMULA (II)@@WHEREIN PHENYL IS SUBSTITUTED AT X WITH ONE TO FIVE HALOGEN ATOMS SELECTED FROM THE GROUP CONSISTING OF FLUORINE, CHLORINE, BROMINE AND IODINE； AND, R1,R2,R3,R4,R5 AND R6 ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND C1-C4 ALKYL； WHEREIN C1-C4 ALKYL IS OPTIONALLY SUBSTITUTED WITH PHENYL (WHEREIN PHENYL IS OPTIONALLY SUBSTITUTED WITH SUBSTITUENTS INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF HALOGEN, C1-C4 ALKYL, C1-C4 ALKOXY, AMINO, NITRO AND CYANO).
