title: Search for new antiarrhythmic and hypotensive compounds. Synthesis, antiarrhythmic, antihypertensive, and alpha-adrenoceptor blocking activity of novel 1-[(2-hydroxy-3-amino)]-propylpyrrolidin-2-one derivatives.
abstract: A series of the derivatives of 1-[2-hydroxy-3-(4-phenyl-1-piperazinyl])propyl]-pyrrolidin-2- one (MG-1) was synthesized and tested for electrocardiographic, antiarrhythmic, and antihypertensive activity as well as for alpha 1- and alpha 2-adrenoceptors binding affinities. Some of the compounds of this series slightly decreased the heart rate, prolonged P-Q, Q-T intervals and QRS complex. Only compound 7 (1-[2-hydroxy-3-(4-phenyl-1-piperazinyl)propyl]-pyrrolidine) possesses potent antiarrhythmic and a slight hypotensive properties, and affinity for alpha 1- and alpha 2-adrenoceptor. The results suggest that the antiarrhythmic and hypotensive effect of compound 7 and MG-1 is related to their adrenolytic properties, and that those properties depend on the presence of a phenylpiperazine moiety.
authors.affiliation: Laboratory of Pharmacological Screening, Collegium Medicum Jagiellonian University, Krakow, Poland.
authors.forename: B
authors.initials: B
authors.lastname: Filipek
authors.forename: J
authors.initials: J
authors.lastname: Sapa
authors.forename: B
authors.initials: B
authors.lastname: Malawska
authors.forename: K
authors.initials: K
authors.lastname: Kulig
authors.forename: L
authors.initials: L
authors.lastname: Antkiewicz-Michaluk
mesh_terms: D000317:Adrenergic alpha-Antagonists / Q000138:chemical synthesis* / Q000494:pharmacology*; D000818:Animals; D000889:Anti-Arrhythmia Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D000959:Antihypertensive Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D011760:Pyrrolidinones / Q000138:chemical synthesis* / Q000494:pharmacology*; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D000317:Adrenergic alpha-Antagonists; D000889:Anti-Arrhythmia Agents; D000959:Antihypertensive Agents; D011760:Pyrrolidinones