74398-46-2Relevant articles and documents
3(2H)-pyridazinone derivatives, a process and intermediates for preparing them and medicaments containing them and/or other 3(2H)-pyridazinone derivatives
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, (2008/06/13)
The subject-matter of the invention are 3(2H)-Pyridazinone derivatives of the general formula wherein R stands for an ethyl or propyl group substituted by a terminal halogen atom or hydroxyl group or a terminal group of the formula in which latter R? represents a hydrogen atom or an optionally substituted benzyl group and R? represents a hydrogen atom or an optionally substituted benzo[1,4]dioxan-2-yl-methyl or benzo[1,4]dioxan-2-yl-ethyl group or a group of the formula in which latter n is 2 or 3 and R? stands for an optionally substituted phenoxy or phenylthio group and X stands for a hydrogen or halogen atom or an optionally substituted saturated or unsaturated 5-or 6-membered heterocyclic group.Furthermore the subject-matter of the invention are a process and intermediates for preparing these compounds and medicaments containing them and/or other 3(2H)-pyridazinone derivatives.The compounds according to the invention inhibit the adrenergic alpha? receptors, have a calcium--antagonistic effect and exert blood pressure lowering action.