title: Lipophilic and hydrophilic esters of 4-acetyl-2-(2-hydroxyethyl)-5,6-bis(4-chlorophenyl)-2H-pyridazin-3-one as antihypertensive agents.
abstract: In an attempt to enhance the antihypertensive activity of 4-acetyl-2-(2-hydroxyethyl)-5,6-bis(4-chlorophenyl)-2H-pyridazin-3-one, 1, a series of lipophilic and hydrophilic esters was synthesized. These derivatives possessed increased lipid and aqueous solubility, respectively. The esters, in general, cause a larger blood-pressure drop than 1 when tested at high doses in the spontaneously hypertensive rat (SHR) model. At lower doses the antihypertensive activity is the same as with 1.
mesh_terms: D000818:Animals; D000959:Antihypertensive Agents / Q000138:chemical synthesis*; D001794:Blood Pressure / Q000187:drug effects; D055598:Chemical Phenomena; D002621:Chemistry; D011724:Pyridazines / Q000138:chemical synthesis* / Q000494:pharmacology; D051381:Rats; D012995:Solubility
chemical_list: D000959:Antihypertensive Agents; D011724:Pyridazines