Azilsartan Medoxomil Chemical Properties

Melting point:

160-161oC

Density 

1.45

storage temp. 

Refrigerator

solubility 

DMSO (Slightly), Methanol (Slightly, Heated, Sonicated)

pka

6.99±0.20(Predicted)

form 

Solid

color 

White to Light Beige

Azilsartan Medoxomil Usage And Synthesis

Description

Azilsartan medoxomil (Edarbi), an angiotensin II receptor antagonist, was approved by the U.S. FDA in February 2011 for the treatment of hypertension in adults. The discovery of azilsartan was the result of a medicinal chemistry effort to identify an ARB with a different carboxylic acid isostere than the ones found in the marketed ARBs. Several of the marketed ARBs use a tetrazole group as a carboxylic acid isostere. The medicinal chemistry approach that led to azilsartan involved the replacement of this commonly used tetrazole with a 5-oxo-1,2,4-oxadiazole group. Azilsartan can be synthesized by Suzuki coupling of p-tolyl boronic acid to 2-bromobenzonitrile, followed by bromination of the methyl group. The bromide is displaced to introduce a protected 2-ethoxy-1H-benzo[d] imidazole-7-carboxylate. The cyano group is converted to a hydroxylamidine, followed by reaction with an alkyl-chloroformate and intramolecular cyclization to form the 5-oxo-1,2,4-oxadiazole ring. The acid is then deprotected and converted to a prodrug. The parent, azilsartan has been extensively characterized in vitro and compared with other marketed AT1 antagonists olmesartan, valsartan, telmisartan, irbesartan, and candesartan. Azilsartan was found to be a potent (IC₅₀=2.6 nM), selective, inverse agonist of the AT₁ receptor. From washout experiments, azilsartan was found have slow dissociation from the receptor and thus is characterized as an insurmountable antagonist.

Description

Azilsartan medoxomil is a prodrug form of azilsartan , a potent and selective angiotensin II receptor 1 (AT₁) antagonist. Azilsartan medoxomil (0.1-10 mg/kg) reduces blood pressure and decreases plasminogen activator inhibitor 1 (PAI-1) levels in the plasma, left ventricle, and aortic wall in mice in a dose-dependent manner. It also inhibits the pressor response induced by angiotensin II in normotensive rats (ID₅₀ = 0.12 mg/kg) and reduces blood pressure and improves glucose infusion, a marker of insulin sensitivity, in spontaneously hypertensive rats. Azilsartan medoxomil also has more potent antiproteinuric effects in Wistar fatty rats than olmesartan medoxomil . Formulations containing azilsartan medoxomil have been used in the treatment of hypertension.

Originator

Takeda (United States)

Uses

Azilsartan medoxomil is a long-acting angiotensin II receptor blocker (ARB) that is used to lower hypertension. When Azilsartan medoxomil enters the gastrointestinal tract, it is rapidly converted to its active form, Azilsartan (A926900).

Definition

ChEBI: A carboxylic ester obtained by formal condensation of the carboxy group of azilsartan with the hydroxy group of 4-(hydroxymethyl)-5-methyl-1,3-dioxol-2-one. A prodrug for azilsartan, it is used for treatment of hypertension.

brand name

Edarbi

Azilsartan Medoxomil(863031-21-4)Related Product Information

• TAK 599
• methyl ((1S,2R,3S,4R)-2,3-dihydroxy-4-((2-(3-((trifluoromethyl)thio)phenyl)pyrazolo[1,5-a]pyrimidin-7-yl)amino)cyclopentyl)sulfamate
• 4-(Hydroxymethyl)-5-methyl-1,3-dioxol-2-one
• 2-[Bis[(1,1-diMethylethoxy)carbonyl]aMino]-3-nitrobenzoic Acid Methyl Ester
• BENZOIC ACID, 2-[[(2'-CYANO[1,1'-BIPHENYL]-4-YL)METHYL]AMINO]-3-NITRO-METHYL ESTER
• Methyl 3-aMino-2-((2'-carbaMoylbiphenyl-4-yl)MethylaMino)benzoate
• Ethyl-3-Amino-2-[(2'-Cyanoiphenyl-4-yl) Methyl]-Amino Benzoate
• (Z)-2-ethoxy-3-((2'-(N'-hydroxycarbaMiMidoyl)biphenyl-4-yl)Methyl)-3H-benzo[d]iMidazole-4-carboxylic acid
• (Z)-Methyl 3-((2'-(N'-hydroxycarbaMiMidoyl)biphenyl-4-yl)Methyl)-2-oxo-2,3-dihydro-1H-benzo[d]iMidazole-4-carboxylate
• Azilsartan iMpurity I
• Methyl 2-oxo-3-((2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl)Methyl)-2,3-dihydro-1H-benzo[d]iMidazole-4-carboxylate
• 1H-BenziMidazole-7-carboxylic acid, 1-[[2'-(2,5-dihydro-5-oxo-1,2,4-oxadiazol-3-yl)[1,1'-biphenyl]-4-yl]Methyl] -2-ethoxy-, Methyl ester
• Azilsartan kaMedoxoMil
• (Z)-Methyl 2-ethoxy-3-((2'-(N'-hydroxycarbaMiMidoyl)biphenyl-4-yl)Methyl)-3H-benzo[d] iMidazole-4-carboxylate
• Azilsartan
• Zafirlukast
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