3-heteroaryl-3,5-dihydro-4-oxo-4H-pyridazino[4,5-b] indole-1-acetamide derivatives, preparation and use thereof in medicaments
US7235554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2003 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Feb 24, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides compounds of general formula (I)in whichX represents a hydrogen or halogen atom; R1 represents a hydrogen atom or a (C1-C4)alkyl group; R2 and R3 each independently of one another represent a hydrogen atom or a (C1-C4)alkyl group, or else R2 and R3, together with the nitrogen atom bearing them, form a pyrrolidinyl, piperidinyl, morpholinyl or 4-(C1-C4)alkylpiperazinyl group; and Het represents a heteroaromatic group of pyridinyl, quinolinyl, isoquinolinyl, pyrimidinyl, pyrazinyl or pyridazinyl type which may carry one or more halogen atoms and/or one or more (C1-C4)alkyl and/or (C1-C4)alkoxy groups; in the form of bases, addition salts with acids, solvates or hydrates; the pharmaceutical compositions comprising them, processes for preparing them, and synthesis intermediates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.