Synthesis of losartan
The percentage yield of Losartan Potassium is Join 2, other followers. Although clinical evidence shows calcium channel blockers and thiazide-type diuretics are preferred first-line treatments for most patients due to both efficacy [ citation needed ] and costan angiotensin II receptor antagonist such as losartan is recommended as first-line treatment in patients under the age of 55 who cannot tolerate an ACE inhibitor.
The following non-limiting examples further illustrate the best mode of carrying out the invention. Clicking on the donut icon will load a page at altmetric.
This is the first time reported here that weaker base such as potassium carbonate or potassium bicarbonate are used for the detriylation reaction. European Journal of Inorganic Chemistry 3 As a specific inhibitor of the urate transporter 1 SLC22A12URAT1losartan blocks the uptake of uric acid into cells, thus leaving more available in the bloodstream to be filtered and excreted by the kidneys. MeloniJames R. Published online 1 October Tetrahedron Letters 43 17 Trityl losartan is an intermediate in processes described in U.
Gildner and Thomas J. Improved process using primary, secondary and tertiary alcohols with modified mode of employing of the reagent and reaction conditions is described. The process of claim 5, wherein said crystallization solvent is isopropyl alcohol. Losartan potassium shown as the compound of formula I below is known in the art as able to be synthesized by reacting its acid shown as the compound of formula II below with KOH.
A process for preparation Batey and David A. The process for manufacture of losartan potassium as claimed in claim 4 wherein anhydrous alkali metal salts are selected from the group consisting of anhydrous potassium carbonate, potassium bicarbonate, and potassium tertiary butoxide. Liebigs Annalen 7 In accordance with the present invention, potassium salts, such as anhydrous potassium carbonate in a primary or secondary alcohol, is reacted with Trityl Losartan to yield Losartan Potassium in high yields.
Organic Letters 17 8 This application is a continuation-in-part of U. FDA approves therapy for pediatric patients with a type of chronic myeloid leukemia: Uses authors parameter CS1 maint: It is on the World Health Organization's List of Essential Medicinesthe most effective and safe medicines needed in a health system. More specifically this invention relates to a commercial process for preparation of the polymorphic Form I of Losartan potassium and an improvement in use of reagent in the reaction and conditions thereof for the preparation of the said Losartan Potassium as claimed in our main application as above.
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After charcoalisation, the filtrate is filtered through celite.