Process for the preparation of substituted benzofuran derivatives
    1.
    发明公开
    Process for the preparation of substituted benzofuran derivatives 失效
    维尔法赫尔(Zur Herstellung)取代物Benzofuranderivate。

    公开(公告)号:EP0496064A1

    公开(公告)日:1992-07-29

    申请号:EP91121073.0

    申请日:1991-12-09

    申请人: PHARMACIA S.p.A.

    摘要: The present invention relates to a process for the preparation of a compound of the following formula (I)

    wherein
    one of R₁ and R₂ is hydrogen or halogen and the other is independently, an amino group or a C₂-C₄ alkanoyl amino group;
    R₃ is hydrogen; a linear or branched alkyl, C₁-C₄ alkoxy or C₂-C₄ alkoxycarbonyl group; halogen; or phenyl unsubstituted or substituted by a C₁-C₄ alkyl group;
    A is a group -(CH₂) n -Het wherein Het is an optionally substituted heteromonocyclic or heterobicyclic ring containing one or two nitrogen atoms and n is zero or an integer of 1 to 3; and the symbol .... ¯ represents a single or double bond and the pharmaceutically acceptable salts thereof.
    The compounds of the invention can be useful as 5HT3 receptor antagonists.

    摘要翻译: 本发明涉及一种制备下式(I)化合物的方法,其中R 1和R 2之一为氢或卤素,另一个独立地为氨基或C 2 -C 4烷酰基氨基 ; R3是氢; 直链或支链烷基,C1-C4烷氧基或C2-C4烷氧基羰基; 卤素; 或未被取代或被C 1 -C 4烷基取代的苯基; A是基团 - (CH 2)n -Het,其中Het是含有一个或两个氮原子且n为0或1至3的整数的任选取代的杂单环或杂双环; 符号......表示单键或双键及其药学上可接受的盐。 本发明的化合物可用作5HT 3受体拮抗剂。