title: Conformationally defined adrenergic agents. 3. Modifications to the carbocyclic ring of 5,6-dihydroxy-1-(2-imidazolinyl)tetralin: improved separation of alpha 1 and alpha 2 adrenergic activities.
abstract: A series of modifications to positions 1, 2, and 4 of the tetralin ring of 5,6-dihydroxy-1-(2-imidazolinyl)tetralin (1, A-54741) succeeded in improving the separation of the potent alpha 1 and alpha 2 adrenergic agonism observed for the parent compound 1. In particular 5,6-dihydroxy-4,4-dimethyl-1-(2-imidazolinyl)tetralin (7) was found to be a specific alpha 1 adrenergic agonist, and 7,8-dihydroxy-4-(2-imidazolinyl)chroman (2) was found to have improved alpha 2 adrenergic agonistic selectivity relative to the parent compound 1.
mesh_terms: D000818:Animals; D001011:Aorta / Q000187:drug effects; D004285:Dogs; D004305:Dose-Response Relationship, Drug; D005260:Female; D008968:Molecular Conformation; D009638:Norepinephrine / Q000378:metabolism; D010643:Phenoxybenzamine / Q000494:pharmacology; D011224:Prazosin / Q000378:metabolism; D011817:Rabbits; D011942:Receptors, Adrenergic, alpha / Q000378:metabolism; D013329:Structure-Activity Relationship; D013566:Sympathomimetics / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D011942:Receptors, Adrenergic, alpha; D013566:Sympathomimetics; D010643:Phenoxybenzamine; D009638:Norepinephrine; D011224:Prazosin