title: [Synthesis of 3-substituted 6-methyl-4-pyridyl-2 (1H) pyridones and testing of their cardiovascular action].
abstract: Reaction of our previously described and in 4- and 6-, respectively, position with 3- and 4-, respectively, substituted 3-cyan-2(1H)-pyridones 4 and 5 with concentrated sulphuric acid had yielded the 3-carbamoyl-pyridones 8 and 9. Hofmann reaction was followed and the 3-amino substituted pyridones 10 and 11 were formed. As by-products the 5-bromo substituted 3-amino-pyridones 12 and 13 were obtained. 4 and 5 were refluxed in the presence of diluted sulphuric acid to yield the decarboxylated pyridones 14 and 15. Cardiotonic Activity of the compounds 4-9 compared to amrinone (Cordemcura) was investigated.
authors.affiliation: Sektion Biowissenschaften, Karl-Marx-Universität Leipzig.
authors.forename: V
authors.initials: V
authors.lastname: Hanfeld
authors.forename: S
authors.initials: S
authors.lastname: Leistner
authors.forename: G
authors.initials: G
authors.lastname: Wagner
authors.forename: D
authors.initials: D
authors.lastname: Lohmann
authors.forename: H
authors.initials: H
authors.lastname: Poppe
authors.forename: S
authors.initials: S
authors.lastname: Heer
mesh_terms: D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D002317:Cardiovascular Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry; D004285:Dogs; D006339:Heart Rate / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects*; D009682:Magnetic Resonance Spectroscopy; D009200:Myocardial Contraction / Q000187:drug effects; D011725:Pyridines / Q000138:chemical synthesis* / Q000494:pharmacology; D011728:Pyridones / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D002317:Cardiovascular Agents; D011725:Pyridines; D011728:Pyridones
vernacular_title: Synthese von 3-substituierten 6-Methyl-4-pyridyl-2(1H)-pyridonen und deren Prüfung auf kardiovaskuläre Wirksamkeit.