title: beta-Adrenergic blocking agents with acute antihypertensive activity.
abstract: Modification of the pharmacological profile of the vasodilating/beta-adrenergic blocking agent 2-[4-[3-(tert-butylamino)-2-hydroxypropoxy]phenyl]-4-(trifluoromethyl)imidazole (1) has been investigated. Introduction of selected substitutents onto the imidazole ring, in place of the trifluoromethyl group, has yielded highly cardioselective beta-adrenergic blocking agents such as 7, 17, and 18. The placement of alkyl or chloro groups onto the aryl ring of 1, as illustrated by 33, has produced a class of compounds characterized as antihypertensive beta-adrenergic blocking agents. In these examples, the acute antihypertensive activity does not appear to be due to either vasodilating or beta 2-agonist properties.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000138:chemical synthesis*; D000403:Airway Resistance / Q000187:drug effects; D000818:Animals; D000959:Antihypertensive Agents / Q000138:chemical synthesis*; D001794:Blood Pressure / Q000187:drug effects; D004285:Dogs; D005260:Female; D006321:Heart / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006973:Hypertension / Q000503:physiopathology; D007083:Iliac Artery; D007093:Imidazoles / Q000138:chemical synthesis* / Q000494:pharmacology; D008297:Male; D009928:Organ Specificity; D051381:Rats; D012039:Regional Blood Flow / Q000187:drug effects; D013329:Structure-Activity Relationship
chemical_list: D000319:Adrenergic beta-Antagonists; D000959:Antihypertensive Agents; D007093:Imidazoles