Novel Benzamides as Selective and Potent Gastrokinetic Agents. IV. Synthesis and Structure-Activity Relationships of 2-Substituted 4-Amino-N-((4-benzyl-2-morpholinyl)methyl)-5-chlorobenzamides.
Novel Benzamides as Selective and Potent Gastrokinetic Agents. IV. Synthesis and Structure-Activity Relationships of 2-Substituted 4-Amino-N-((4-benzyl-2-morpholinyl)methyl)-5-chlorobenzamides.
Substituted benzamide derivatives, processes for the preparation thereof, and pharmaceutical compositions containing the same
申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:EP0243959B1
公开(公告)日:1992-08-19
US4870074A
申请人:——
公开号:US4870074A
公开(公告)日:1989-09-26
US9962390B2
申请人:——
公开号:US9962390B2
公开(公告)日:2018-05-08
Novel Benzamides as Selective and Potent Gastrokinetic Agents. IV. Synthesis and Structure-Activity Relationships of 2-Substituted 4-Amino-N-((4-benzyl-2-morpholinyl)methyl)-5-chlorobenzamides.
A new series of 2-substituted 4-amino-N-[(4-benzyl-2-morpholinyl)methyl]-5-chlorobenzamides (4-39) including a few 4-fluorobenzyl analogues were prepared and evaluated for their gastrokinetic activity by determining their effects on the gastric emptying activity of phenol red semisolid meal in rats. The C-2 substituent comprises alkoxy and variously substituted alkoxy groups. Among the derivatives, 4-amino-N-[(4-benzyl-2-morpholinyl)methyl]-2-(n-butoxy)-5-chlorobenzamide (5), its 4-fluorobenzyl (6), and 3-methyl-2-butenyloxy analogues (22) were superior to cisapride and essentially equipotent to the 2-ethoxy analogue (1b, AS-4370 as its citrate) in gastrokinetic activity. These compounds, like AS-4370, had no dopamine D2 receptor antagonistic activity.