Abstract: The present invention provides sulfamate derivative prodrugs of the dopamine agonist (4aR,10aR)-1-Propyl-1,2,3,4,4a,5,10,10a-octahydro-benzo[g]quinoline-6,7-diol, their use in the treatment of conditions for which treatment with a dopamine agonist is therapeutically beneficial and pharmaceutical compositions comprising compounds of the invention. Compounds according to the invention are of formula (Id), wherein R1 and R2 are each independently selected from H, and substituent (iii) below, wherein * indicates the attachment point to oxygen, wherein R3 is selected from H and COR4, and wherein R4 is selected from H and C1-C6 alkyl, with the proviso that R1 and R2 cannot both be H,15 or a pharmaceutically acceptable salt thereof.