A compound represented by the formula (I)
1
wherein each symbol is as defined in the specification, or a salt thereof (1) shows a superior anti-ulcer activity, a gastric acid secretion-suppressive action, a mucosa-protecting action, an anti-
Helicobacter pylori
action and the like in living organisms, (2) shows low toxicity, (3) is stable to acid (which obviates the need to formulate an enteric-coated preparation, thereby lowering the cost, and reduces the size of preparation to facilitate swallowing for patients having difficulty in swallowing), (4) shows faster absorption than enteric-coated preparations (rapid expression of gastric acid secretion-suppressive action), and (5) is sustainable. According to the present invention, a benzimidazole compound, which has superior stability to acid and which is converted to a proton pump inhibitor in living organisms to show an anti-ulcer activity and the like, can be provided.
化合物式(I)所表示的化合物,其中每个符号如规范中所定义,或其盐(1)在
生物体中表现出优越的抗溃疡活性,抑制胃酸分泌作用,保护粘膜作用,抗幽门螺杆菌作用等,(2)显示低毒性,(3)稳定耐酸(无需制备肠溶涂层制剂,从而降低成本,并减小制剂大小以便于吞咽难度较大的患者),(4)显示比肠溶涂层制剂更快的吸收(迅速表现出抑制胃酸分泌作用),(5)具有可持续性。根据本发明,可以提供一种
苯并咪唑化合物,其对酸稳定性优越,并在
生物体内转化为质子泵
抑制剂以显示抗溃疡活性等。