Process for the preparation of 2-(2-(4-(bis(4-fluorophenyl)methyl)-piperazin-1-yl)ethoxy)acetic acid derivatives or corresponding salt forms thereof and intermediates therefor
申请人:——
公开号:US20040254375A1
公开(公告)日:2004-12-16
The present invention relates to a process for the manufacture of 2-{2-[4-(bis(4-fluorophenyl)methyl)-1-piperazinyl]ethoxy}acetic acids, amides or related derivatives, of the general formula (I) wherein: Y represents hydroxy or —NR
1
R
2
; R
1
and R
2
each independently represent hydrogen or C?1-4#191 alkyl; m is 1 or 2, and n is 1 or 2, as well as the non-toxic, pharmaceutically acceptable salts and mixtures thereof. The present invention concerns also a polymorphic form of efletirizine.
1
本发明涉及一种通式(I)的 2-{2-[4-(双(4-氟苯基)甲基)-1-哌嗪基]乙氧基}乙酸、酰胺或相关衍生物的制造工艺,其中: Y代表羟基或-NR 1 R 2;R 1和R 2各自独立地代表氢或C?1-4#191烷基;m是1或2,n是1或2,以及它们的无毒、药学上可接受的盐和混合物。 本发明还涉及依非利嗪的多晶型。