Synthesis of substantially pure terfenadine derivatives
    10.
    发明公开
    Synthesis of substantially pure terfenadine derivatives 失效
    Synthese von praktisch reinen Terfenadinderivaten

    公开(公告)号:EP0723958A1

    公开(公告)日:1996-07-31

    申请号:EP96200338.0

    申请日:1994-06-21

    摘要: The present invention relates to substantially pure piperidine derivative compounds of formulae (I) or (II)

    wherein R 1 is hydrogen or hydroxy; R 2 is hydrogen; or R 1 and R 2 taken together form a second bond between the carbon atoms bearing R 1 and R 2 ; R 3 is -COOH or -COOR 4 ; R 4 has 1 to 6 carbon atoms; A, B, and D are the substituents of their respective rings each of which may be different or the same and are hydrogen, halogens, alkyl, hydroxy, alkoxy, or other substituents.

    摘要翻译: 本发明涉及式(I)或(II)基本上纯的哌啶衍生物化合物,其中R 1是氢或羟基; R2是氢; 或者R 1和R 2一起形成带有R 1和R 2的碳原子之间的第二个键; R3是-COOH或-COOR4; R4具有1至6个碳原子; A,B和D是它们各自的环的取代基,其各自可以是不同的或相同的,并且是氢,卤素,烷基,羟基,烷氧基或其它取代基。