[EN] SYNTHESIS METHODS AND INTERMEDIATES FOR THE MANUFACTURE OF RIZATRIPTAN<br/>[FR] PROCEDES DE SYNTHESE ET PRODUITS INTERMEDIAIRES POUR PRODUIRE DU RIZATRIPTAN
申请人:RATIOPHARM GMBH
公开号:WO2005075422A1
公开(公告)日:2005-08-18
The invention relates to a process for the manufacture of an 1,2,4-triazol-1-yl compound of the formula [A], or a salt thereof, wherein each of R3 and R4 is hydrogen or lower alkyl, said process comprising reacting a hydrazine compound of the formula [B] wherein R is hydrogen or acyl, R2 is hydrogen or a protecting group, are hydrogen or lower alkyl, and R6 is hydrogen or COOR7, or a salt thereof, with a 1,2,4-triazolyl forming reagent. In addition, novel intermediates for the synthesis of the anti-migraine agent Rizatriptan and methods for their synthesis are presented.
本发明涉及一种制备式[A]的1,2,4-三唑-1-基化合物或其盐的工艺,其中R3和R4各自是氢或低级烷基,所述工艺包括将式[B]的肼化合物与1,2,4-三唑基形成剂反应,其中R是氢或酰基,R2是氢或保护基团,是氢或低级烷基,R6是氢或COOR7,或其盐。另外,还提供了一种用于合成抗偏头痛药物利扎曲普坦的新颖中间体及其合成方法。