title: beta 1-selective adrenoceptor antagonists. 2. 4-ether-linked phenoxypropanolamines.
abstract: A series of 4-substituted phenoxypropanolamines was prepared and examined for beta-adrenoceptor activity. Some of the compounds, especially the [4-[2-[[2-(4-fluorophenyl)ethyl] oxy]ethoxy]phenoxy]propanolamines (14, 15, and 24), showed potent beta 1-blockade with virtually no beta 2-blockade at doses over a 1000 times greater. The compounds also possessed partial agonist activity. Structure-activity relationships are discussed, and conclusions are drawn about the binding sites on beta-adrenoceptors.
mesh_terms: D000318:Adrenergic beta-Agonists / Q000378:metabolism / Q000494:pharmacology*; D000818:Animals; D001681:Biological Assay; D001794:Blood Pressure / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D007202:Indicators and Reagents; D007545:Isoproterenol / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D010647:Phenyl Ethers / Q000138:chemical synthesis / Q000494:pharmacology; D011412:Propanolamines / Q000138:chemical synthesis* / Q000494:pharmacology; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D000318:Adrenergic beta-Agonists; D007202:Indicators and Reagents; D010647:Phenyl Ethers; D011412:Propanolamines; D007545:Isoproterenol