3-heteroaryl-3,5-dihydro-4-oxo-4h-pyridazino[4,5-b]-indole-1...

C - Chemistry – Metallurgy – 07 – D

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C07D 487/04 (2006.01) A61K 31/5025 (2006.01) C07D 209/42 (2006.01)

Patent

CA 2465750

The invention concerns compounds of the general formula (I), (see formula I) wherein: X represents a hydrogen or halogen atom; R1 represents a hydrogen atom or a (C1-C4)alkyl group; R2 and R3, represent each, independently of each other, a hydrogen atom or a (C1-C4)alkyl group, or R2 and R3 form, with the atom which bears them, a pyrrolidinyl, piperidinyl, morpholinyl or 4-alkylpiperazinyl group; and Het represents a heteroaromatic group of pyridinyl, 1-oxidopyridinyl, quinolinyl, isoquinolinyl, pyrimidinyl, pyrazinyl, pyridazinyl type, the heteroaromatic group may represent one or several halogen atoms and/or one or several (C1-C4)alkyl, (C1-C4)alkoxyl groups; in the form of bases, addition salts to acids, solvates or hydrates. The invention also concerns pharmaceutical compositions containing same, methods for preparing same and synthesis intermediates.

L'invention a pour objet les composés de formule générale (I) dans laquelle X représente un atome d'hydrogène ou d'halogène ; R¿1? représente un atome d'hydrogène ou un groupe (C¿1?-C¿4?)alkyle; R¿2? et R¿3? représentent chacun, indépendamment l'un de l'autre, un atome d'hydrogène ou un groupe (C¿1?-C¿4?)alkyle, ou bien R¿2? et R¿3? forment, avec l'atome d'azote qui les porte, un groupe pyrrolidinyle, pipéridinyle, morpholinyle ou 4-alkylpipérazinyle ; et Het représente un groupe hétéroaromatique de type pyridinyle, 1-oxydopyridinyle, quinolinyle, isoquinolinyle, pyrimidinyle, pyrazinyle, pyridazinyle, le groupe hétéroaromatique pouvant porter un ou plusieurs atomes d'halogène et/ou un ou plusieurs groupes (C¿1?-C¿4?)alkyle, (C¿1?-C¿4?)alcoxyle; à l'état de bases, de sels d'addition à des acides, de solvats ou d'hydrates, les compositions pharmaceutiques les contenant, des procédés pour leur préparation et des intermédiaires de synthèse.

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