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Zahlreiche 3‐[Pyrazolyl‐( 1 )]‐pyridazin‐Derivate wurden nach Literaturmethoden synthetisiert und in Tierversuchen (Katzen, Ratten) auf ihre hxgotensive und/oder inhibitorische Aktivität auf den PG‐Metabolismus getestet.

[1,4]Benzodioxanylmethyl-, [1,4]benzodioxanylmethylaminopropyl- and phenoxyethylaminoethyl-substituted lactams were synthesised and their hypotensive activity was investigated. Some of these compounds show moderate to high hypotensive effect, but they had more toxic and/or side effects than GYKI-12 743.