1,3-dihydro-1-[(1-piperidinyl)alkyl]- 2H-benzimidazol-2-one derivatives of the formula
wherein
R1 and R2 are each independently selected from the group consisting of hydrogen, halo, lower alkyl and trifluoromethyl;
R3 is a member selected from the group consisting of hydrogen, lower alkyl and lower alkylcarbonyl;
lk is a lower alkylene radical;
R4 and R5 are each independently selected from the group consisting of hydrogen and lower alkyl;
X is a member selected from the group consisting of
wherein said R2 is hydrogen or lower alkyl and said q is the integer 2 or 3; and
Ar is a member selected from the group consisting of phenyl, substituted phenyl, pyridinyl and thienyl, wherein said substituted phenyl has from 1 to 3 substituents each independently selected from the group consisting of halo, lower alkyl, lower alkyloxy, amino, nitro and trifluoromethyl,
which compounds are potent serotonin-antagonists and central nervous system depressants having a capability as antiemetic neuroleptic and anti-congestive agents.
式中的 1,3-二
氢-1-[(1-
哌啶基)烷基]-
2H-苯并咪唑-2-酮衍
生物
其中
R1 和 R2 各自独立地选自
氢、卤素、低级烷基和三
氟甲基组成的组;
R3 是选自由
氢、低级烷基和低级烷基羰基组成的组;
lk 是低级亚烷基;
R4 和 R5 各自独立地选自
氢和低级烷基组成的组;
X 选自以下组成的组
其中所述 R2 为
氢或低级烷基,所述 q 为整数 2 或 3;以及
Ar 是选自由
苯基、取代
苯基、
吡啶基和
噻吩基组成的组,其中所述取代
苯基具有 1 至 3 个各自独立选自由卤代、低级烷基、低级烷
氧基、
氨基、硝基和三
氟甲基组成的组的取代基、
这些化合物是强效的
血清素拮抗剂和中枢神经系统
抑制剂,具有止吐、神经
安定和抗充血作用。