| abstract |
The present invention relates to novel compounds of formula (I)' or a salt thereof: wherein G is selected from a group consisting of: phenyl, a 5- or 6-membered monocyclic heteroaryl group, or a 8- to 11 -membered heteroaryl bicyclic group; A is a group P1 or a group P2 Wherein p is an integer ranging from 0 to 5; R1 is halogen, hydroxy, cyano, C1-4alkyl, haloC1-4alkyl, C1-4alkoxy, haloC1- 4alkoxy, C1-4alkanoyl and SF5; or corresponds to a group R6; and when p is an integer ranging from 2 to 5, each R1 may be the same or different; R2 is hydrogen or C1-4alkyl; n is 3, 4, 5 or 6; R6 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 R6 group is optionally substituted by one or two substituents selected from: halogen, cyano, C1- 4alkyl, haloC1-4alkyl, C1-4alkoxy, C1-4alkanoyl; R4 is selected in the group consisting of: hydrogen, halogen, hydroxy, cyano, C1- 4alkyl, C3-7 cycloalkyl, haloC1-4alkyl, C1-4-alkoxy, haloC1-4alkoxy, C1-4alkanoyl and NR'R'; or R4 is a phenyl group, a 5-14 membered heterocyclic group; and any of such phenyl or heterocyclic group is optionally substituted by 1, 2, 3 or 4 substituents selected from the group consisting of: halogen, cyano, C1-4alkyl, haloC1-4alkyl, C1-4alkoxy, C1-4alkanoyl, haloC1-4alkoxy and SF5; R5 is selected in the group consisting of: hydrogen, halogen, hydroxy, cyano, C1-4alkyl, C3-7 cycloalkyl, haloC1-4alkyl, C1-4alkoxy, haloC1-4alkoxy, C1-4alkanoyl and NR'R'; or R5 is a phenyl group, a 5-14 membered heterocyclic group; and any of such phenyl or heterocyclic groups is optionally substituted by 1, 2, 3 or 4 substituents selected from the group consisting of: halogen, cyano, C1-4alkyl, haloC1-4alkyl, C1-4alkoxy, C1-4alkanoyl and SF5; R7 is hydrogen or C1-2alkyl; R' is H, C1-4 alkyl or C1-4 alkanoyl; R' is defined as R'; R' and R' taken together with the interconnecting nitrogen atom may form a 5-, 6- membered saturated or unsaturated heterocyclic ring; wherein at least one of R4 and R5 is hydrogen; and wherein only one R2 group may be different from hydrogen; 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, as antipsychotic agents, to treat obsessive compulsive spectrum disorders, or premature ejaculation. |