A simple and efficient synthesis of the valsartan

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Valsartan 1,one of the most important agents used in antihypertensive therapy today,was synthesized starting from L-valin methyl ester hydrochloride 2 through four steps in an overall yield of 60%.The key step involves the palladium-catalyzed SuzuKi coupling.This method overcomes many of the drawbacks associated with the previously reported syntheses and is more suitable for industrial production.
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