Dibenzofurancarboxamides and their pharmaceutical compositions and
申请人:Rorer Pharmaceutical Corporation
公开号:US04863921A1
公开(公告)日:1989-09-05
This invention is directed to certain dibenzofurancarboxamides and their use as 5HT.sub.3 antagonists having unique CNS, anti-emetic and gastric prokinetic activity void of any significant D.sub.2 receptor binding properties. This invention also describes novel processes necessary for their preparation.
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.