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 treating conditions for which treatment with a
dopamine agonist has therapeutic benefit, and pharmaceutical compositions comprising a compound of the present invention. The compounds according to the present invention have the formula (Id), wherein R1and R2are each independently selected from H and the
substituent (iii) below, wherein * indicates the point of attachment to
oxygen, wherein R3is selected from H and COR4, and wherein R4is selected from H and C1-C6
alkyl, with the proviso that R1and R2cannot both be H, 15or a pharmaceutically acceptable salt thereof.