title: Synthesis and beta-adrenergic blocking activity of oxipropanolamines of 3,4-dihydro-3-oxo-2H(1,4)benzothiazine.
abstract: The synthesis of a series of oxypropanolamines of 3,4-dihydro-3-oxo-2H(1,4)benzothiazine is reported. Some of these compounds proved more potent than propranolol and carteolol as beta-adrenergic blocking agents in in vitro tests. The 8-(3-tert-butylamino-2-hydroxy)propoxy-3,4-dihydro-3-oxo-2H(1,4) benzothiazine fumarate (XVI a), which gave better results, confirmed its remarkable activity in in vivo tests.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000138:chemical synthesis*; D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D005260:Female; D006168:Guinea Pigs; D006339:Heart Rate / Q000187:drug effects; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000037:antagonists & inhibitors; D008297:Male; D051379:Mice; D011412:Propanolamines / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D051381:Rats; D011918:Rats, Inbred SHR; D013843:Thiazines / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity
chemical_list: D000319:Adrenergic beta-Antagonists; D011412:Propanolamines; D013843:Thiazines; D007545:Isoproterenol