A novel series of benzamides with a hexahydro-1,4-diazepine or hexahydroazepine ring in the amine moiety were prepared, and their binding affinities for 5-HT3 and dopamine D2 receptors were evaluated. The R isomer of the 1-ethyl-4-methylhexahydro-1,4-diazepinylbenzamide (R)-22 had potent affinity for both receptors. The R-enantiomer of the corresponding 1-ethylhexahydroazepinylbenzamide 28 showed potent
This invention discloses a compound which is expressed by formula (I) below: ##STR1## or physiologically acceptable acid addition salts thereof. The claimed compound exhibits excellent antiemetic effect based on its potent serotonin S.sub.3 and dopamine D.sub.2 receptor antagonistic activities, and is useful for treatment or prophylaxis of various gastrointestinal symptoms which are associated with various diseases and drug administration.
Synthesis and Structure−Affinity Relationships of Novel <i>N</i>-(1-Ethyl-4-methylhexahydro-1,4-diazepin-6-yl)pyridine-3-carboxamides with Potent Serotonin 5-HT<sub>3</sub> and Dopamine D<sub>2</sub> Receptor Antagonistic Activity
dopamine D(2) receptor while keeping a potent serotonin 5-HT(3) receptor binding affinity. As a result of structure-affinity relationships, the 5-bromo-2-methoxy-6-methylaminopyridine-3-carboxamide 53 was selected as the most promising product showing a high binding affinity for both receptors. Compound 53 affinity for the dopamine D(2) and serotonin 5-HT(3) receptors was much more potent than that of
(R)-5-BROMO-N-(1-ETHYL-4-METHYLHEXAHYDRO-1H-1,4-DIAZEPIN-6-YL)-2-METHOXY-6-METHYLAMINO-3-PYRIDINE-CARBOXAMIDE, PROCESS FOR PRODUCING THE SAME AND MEDICINAL COMPOSITION CONTAINING THE SAME
申请人:DAINIPPON PHARMACEUTICAL CO., LTD.
公开号:EP0855397A1
公开(公告)日:1998-07-29
This invention discloses a compound which is expressed by formula (I) below:
or physiologically acceptable acid addition salts thereof.
The claimed compound exhibits excellent antiemetic effect based on its potent serotonin S3 and dopamine D2 receptor antagonistic activities, and is useful for treatment or prophylaxis of various gastrointestinal symptoms which are associated with various diseases and drug administration.
Synthesis of N-(1-ethyl-4-methylhexahydro-1,4-diazepin-6-yl)nicotinamides and their affinities for 5-HT3 and dopamine D2 receptors
作者:Yoshimi Hirokawa、Naoyuki Yoshida、Shiro Kato
DOI:10.1016/s0960-894x(98)00258-3
日期:1998.6
A series of N-(1-ethyl-4-methylhexahydro-1,4-diazepin-6-yl) derivatives were prepared and evaluated for their binding to 5-HT3 and dopamine D-2 receptors. Among them, the 5-bromo-2-methoxy-6-methylaminonicotinamide 16 and its (R)-isomer were found to have potent affinities for both receptors. The affinities of(R)-16 for 5-HT3 and dopamine D-2 receptors are approximately 3-fold higher than those of the corresponding benzamide (R)-1 (IC50:1.1 and 12 nM vs. 2.9 and 35 nM, respectively). (C) 1998 Elsevier Science Ltd. All rights reserved.