Dibenzofurancarboxamides, their use as pharmaceutical agents, a composition containing the same, and a process for the preparation thereof
申请人:RHONE-POULENC RORER INTERNATIONAL (HOLDINGS) INC.
公开号:EP0339950A2
公开(公告)日:1989-11-02
This invention provides certain dibenzofurancarboxamides as defined by the formula:
where
R₁ is hydrogen, amino, alkylamino or halo;
R₂ is hydrogen, halo, sulfamyl, alkylsulfamyl or alkylsulfonyl;
R′ is hydrogen or alkyl or together with a vicinal R′ group may form a double bond; and
R is certain specific nitrogen heterocyclic groups.
The compounds of the invention are useful as 5HT₃ antagonists having unique CNS, anti-emetic and gastric prokinetic activity void of any significant D₂ receptor binding properties. The invention also provides processes necessary for the preparation of the compounds of the invention.
本发明提供了某些由式定义的二苯并呋喃甲酰胺:
其中
R₁ 是氢、氨基、烷基氨基或卤素;
R₂ 是氢、卤素、氨基磺酰基、烷基氨基磺酰基或烷基磺酰基;
R′ 是氢或烷基,或与邻接的 R′基团一起可形成双键;以及
R 是某些特定的氮杂环基团。
本发明化合物可作为 5HT₃ 拮抗剂,具有独特的中枢神经系统、止吐和促胃动力活性,不具有任何明显的 D₂ 受体结合特性。本发明还提供了制备本发明化合物的必要工艺。