title: New congeners of antihypertensive and antithrombotic 7-amino or 7-acetyl-aminosubstituted-4,4a-dihydro-5H-indeno (1,2-c)pyridazin-3-ones.
abstract: New congeners of the antihypertensive and antithrombotic 7-amino-(I b) and 7-acetylamino-4,4a-dihydro-5H-indeno(1,2-c)pyridazin-3-one (I c) have been synthesized and evaluated pharmacologically. Compounds (I k) (R = 7-NHCH3), (I l) (R = 7-N(CH3)COCH3) and (I m) (R = 7-N(CH3)COC2H5) exhibited an antihypertensive effect similar to that of (I b) and (I c), though short lasting. The antithrombotic activity of six compounds was found comparable to or higher than that of acetylsalicilic acid. In particular, (I l) and (I m) fully protected mice against thrombosis, as did the reference compound (I c).
authors.affiliation: Istituto Chimico Farmaceutico e Tossicologico, Università di Milano, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Cignarella
authors.forename: D
authors.initials: D
authors.lastname: Barlocco
authors.forename: L
authors.initials: L
authors.lastname: Landriani
authors.forename: M
authors.initials: M
authors.lastname: Folloni
authors.forename: G A
authors.initials: GA
authors.lastname: Pinna
authors.forename: F
authors.initials: F
authors.lastname: Sala
authors.forename: M
authors.initials: M
authors.lastname: Germini
mesh_terms: D000818:Animals; D000959:Antihypertensive Agents / Q000138:chemical synthesis* / Q000633:toxicity; D055598:Chemical Phenomena; D002621:Chemistry; D005343:Fibrinolytic Agents / Q000138:chemical synthesis* / Q000633:toxicity; D007192:Indenes / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D007928:Lethal Dose 50; D008297:Male; D051379:Mice; D011724:Pyridazines / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D051381:Rats; D011918:Rats, Inbred SHR
chemical_list: D000959:Antihypertensive Agents; D005343:Fibrinolytic Agents; D007192:Indenes; D011724:Pyridazines