A METHOD OF PREPARING A HIGHLY PURE POTASSIUM SALT OF AZILSARTAN MEDOXOMIL

摘要

The present invention also relates to a process for the preparation of a compound of formula (I) wherein a solvate of an azurturate of a compound of formula (II), a solvent selected from the group consisting of dimethylacetamide or N-methylpyrrolidone or other solvents and mixtures thereof, (I), which is recrystallized from N-methylpyrrolidine or other solvents and mixtures thereof, and which in the next step is converted to the potassium salt using a potassium source in a suitable solvent, And a method for manufacturing the same. (I) (II)