The present invention provides a compound having a superior acid secretion inhibitory action, an antiulcer activity and the like.
A proton pump inhibitor containing a compound represented by the formula (I)
wherein ring A is a saturated or unsaturated 5- or 6-membered ring group optionally having, as a ring-constituting atom besides carbon atom, 1 to 4 hetero atoms selected from a nitrogen atom, an oxygen atom and a sulfur atom, ring-constituting atoms X1 and X2 are each a carbon atom or a nitrogen atom, a ring-constituting atom X3 is a carbon atom, a nitrogen atom, an oxygen atom or a sulfur atom, R1 is an optionally substituted aryl group or an optionally substituted heteroaryl group, R2 is an optionally substituted alkyl group, an optionally substituted aryl group or an optionally substituted heteroaryl group, R3 is an aminomethyl group optionally substituted by 1 or 2 lower alkyl groups, which is a substituent on a ring-constituting atom other than X1, X2 and X3, and ring A optionally further has substituent(s) selected from a lower alkyl group, a halogen atom, a cyano group and an oxo group, or a salt thereof or a prodrug thereof.
本发明提供了一种具有优良的酸分泌抑制作用、抗溃疡活性等的化合物。一种质子泵
抑制剂包含式(I)所表示的化合物,其中环A是一个饱和或不饱和的5-或6-成员环基团,选项包括作为环构成原子的碳原子以外的1到4个异原子,所述异原子选自氮原子、氧原子和
硫原子,环构成原子X1和X2分别是碳原子或氮原子,环构成原子X3是碳原子、氮原子、氧原子或
硫原子,R1是可选的取代芳基基团或可选的取代杂环芳基基团,R2是可选的取代烷基基团、可选的取代芳基基团或可选的取代杂环芳基基团,R3是
氨甲基基团,该基团可选地由1或2个低碳烷基取代,该基团是除X1、X2和X3外的环构成原子上的取代基,并且环A还可以进一步具有从低碳烷基、卤素原子、
氰基和氧代基中选择的取代基,或其盐或前药。