DERIVADOS DE 5-((HALOGENOFENIL)-3-HALOGENO-PIRIDIN-2-IL)-NITRILO COMO INTERMEDIÁRIOS NA PREPARAÇÃO DE DERIVADOS DE ÁCIDO [(5-(HALOGENOFENIL)-3-HIDROXIPIRIDIN-2-CARBONIL)-AMINO]ALCANÓICO
The present invention relates to 5-aryl or 5-heteroaryl substituted 3-hydroxypyridin-2-yl-carbonylamino-alkanoic acid derivatives and salts thereof as well as to their preparation from the respective 3-hydroxy-picolinic acid derivatives. The final compounds are prolyl hydroxylase inhibitors.