The present invention provides an improved synthesis for the manufacture of candesartan and pharmaceutically acceptable salts and esters thereof as active ingredients of a medicament for the treatment of hypertension and related diseases and {TAIL ~ conditions} which comprises the removal of the tetrazolyl protecting group in an organic solvent, and in {HEAD ~ the presence} of a Lewis acid 
The present invention provides an improved synthesis for the manufacture of candesartan and pharmaceutically acceptable salts and esters thereof as active ingredients of a medicament for the treatment of hypertension and related diseases and { TAIL ~ conditions } which comprises the removal of the tetrazolyl protecting group in an organic solvent , and in { HEAD ~ the presence } of a Lewis acid
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