| abstract |
This invention relates to compounds of the general formula (I), wherein X represents a hydrogen or halogen atom; R represents a hydrogen atom or a (C — C) alkyl group; R and R, each independently of one another, represent a hydrogen atom or a (C — C) alkyl group, or R and R form with the atom that carries them a pyrrolidinyl, piperidinyl, morpholinyl or 4-alkyl piperazinyl group and Het represents a heteroaromatic pyridinyl group , 1-oxide-pyridinyl, quinolinyl, isoquinolinyl, pyrimidinyl, pyrazinyl, pyridazinyl type, wherein the heteroaromatic group may carry one or more halogen atoms and / or one or more than one (C-C) alkyl or (C-C) alkoxy; in the form of bases, acid addition salts, solvates or hydrates. This invention also relates to pharmaceutical compositions containing such compounds, to methods for producing such compounds, and to intermediates for their synthesis. |