| abstract |
The present invention relates to novel compounds of formula (I) or a pharmaceutically acceptable salt thereof, wherein G is selected from a group consisting of: phenyl, pyridyl, benzothiazolyl, indazolyl; p is an integer ranging from 0 to 5; R1 is independently selected from a group consisting of: halogen, hydroxy, cyano, C1-4alkyl, halo C1-4alkyl, C1-4alkoxy, halo C1-4alkoxy, C1-4alkanoyl and SF5; or corresponds to a group R5; R2 is hydrogen or C1-4alkyl; R3 is C1-4alkyl; R4 is hydrogen, C1-4alkyl or C1-6 cycloalkyl optionally substituted by 1or 2 substituents selected from the group consisting of: halogen, cyano, C1-4alkyl, halo C1-4alkyl, C1-4alkoxy, C1-4alkanoyl; R5 is a moiety selected from the group consisting of: isoxazolyl, -CH2-N-pyrrolyl, 1,1-dioxido-2-isothiazolidinyl, thienyl, thiazolyl, pyridyl, 2-pyrrolidinonyl, and such a group is optionally substituted by one or two substituents selected from: halogen, cyano, C1-4alkyl, halo C1-4alkyl, C1-4alkoxy, C1-4alkanoyl; processes for their preparation, intermediates used in these processes, pharmaceutical compositions containing them and their use in therapy, as modulators of dopamine D3 receptors, e.g. to treat drug dependency, or as antipsychotic agents, or to treat obsessive compulsive spectrum disorders or premature ejaculation. |