Indole derivatives.

摘要

The invention relates to compounds of formula (I): <CHEM> wherein Im represents an imidazolyl group of formula : <CHEM> R<1> represents a hydrogen atom or a group selected from C1-6alkyl, C3-6alkenyl, C3-10alkynyl, C3-7cycloalkyl, C3-7cycloalkylC1-4alkyl, phenyl, phenylC1-3alkyl, -CO2R<8>, -COR<8>, -CONR<8>R<9> or -SO2R<8> (wherein R<8> and R<9>, which may be the same or different, each represents a hydrogen atom, a C1-6alkyl or C3-7cycloalkyl group, or a phenyl or phenylC1-4alkyl group, in which the phenyl group is optionally substituted by one or more C1-4alkyl, C1-4alkoxy or hydroxy groups or halogen atoms, with the proviso that R<8> does not represent a hydrogen atom when R<1> represents a group -CO2R<8> or -SO2R<8>); R2 represents a hydrogen atom or a C1-6alkyl, C3-6alkenyl, C3-7cycloalkyl, phenyl or phenylC1-3 alkyl group; R<3> and R<4>, which may be the same or different, each represents a hydrogen atom or a C1-6alkyl group; one of the groups represented by R<5>, R<6> and R<7> is a hydrogen atom or a C1-6alkyl, C3-7cycloalkyl, C3-6alkenyl, phenyl or phenylC1-3alkyl group, and each of the other two groups, which may be the same or different, represents a hydrogen atom or a C1-6alkyl group; Q represents a hydrogen atom or a halogen atom or a hydroxy, C1-4alkoxy, phenylC1-3alkoxy or C1-6alkyl group or a group -NR<1><0>R<1><1> or -CONR<1><0>R<1><1> (wherein R<1><0> and R<1><1>, which may be the same or different, each represents a hydrogen atom or a C1-4alkyl or C3-4alkenyl group, or together with the nitrogen atom to which they are attached form a saturated 5 to 7 membered ring); and with the proviso that when Q represents a hydrogen atom R<1> represents -CO2R<8>, -COR<8>, -CONR<8>R<9> or -SO2R<8>; and physiologically acceptable salts and solvates thereof. The compounds are potent and selective antagonists of the effect of 5-HT at 5-HT3 receptors and are useful, for example, in the treatment of psychotic disorders, anxiety, and nausea and vomiting.