Process for preparing montelukast or a pharmaceutically acceptable salt thereof, especially its sodium salt, that comprises the condensation of an aldehyde and 7-chloro-2-methylquinoline. Moreover, novel intermediates useful for the synthesis of montelukast are described as well as their preparation.
[EN] PROCESS FOR PREPARING A LEUKOTRIENE ANTAGONIST<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN ANTAGONISTE DES LEUCOTRIÈNES
申请人:FARMAPROJECTS S A
公开号:WO2007101841A2
公开(公告)日:2007-09-13
[EN] Process for preparing montelukast or a pharmaceutically acceptable salt thereof, especially its sodium salt, that comprises the condensation of an aldehyde and 7-chloro-2-methylquinoline. Moreover, novel intermediates useful for the synthesis of montelukast are described as well as their preparation. [FR] La présente invention concerne un procédé de préparation de montélukast ou d'un sel pharmaceutiquement acceptable de celui-ci, plus particulièrement son sel de sodium, qui comprend la condensation d'un aldéhyde et de 7-chloro-2-méthylquinoléine. En outre, l'invention concerne de nouveaux intermédiaires utiles dans la synthèse de montélukast ainsi que leur préparation.