The present invention relates to novel imidazo-[2,1-b]benzothiazole compounds represented by formula (I) and pharmacological acceptable salts thereof: ##STR1## wherein R.sub.1 represents a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R.sub.2 represents a ##STR2## group (wherein X and Y, which may be the same or different, each represents a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted phenyl group), a --CH.sub.2 --O--Z group (wherein Z represents a lower alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted benzyl group) or a --CH.sub.2 --O--CO--W group (wherein W represents an alkyl group having 1 to 8 carbon atoms, an alkylamino group having 1 to 8 carbon atoms, a substituted or unsubstituted phenyl group or a thienyl group); and R.sub.3 ; R.sub.4 and R.sub.5, which may be the same or different, each represents a hydrogen atom, a halogen atom or a lower alkoxy group having 1 to 4 carbon atoms, and antiulcer compositions comprising as the efective ingredient the compounds.
本发明涉及由式(I)表示的新型
咪唑[2,1-b]
苯并噻唑化合物及其药学上可接受的盐:##STR1## 其中R.sub.1表示氢原子或具有1至4个碳原子的低碳基;R.sub.2表示一个##STR2##基团(其中X和Y,可以相同也可以不同,分别表示氢原子,具有1至4个碳原子的低碳基或取代或未取代的苯基),一个--CH.sub.2--O--Z基团(其中Z表示具有1至4个碳原子的低碳基或取代或未取代的苄基),或一个--CH.sub.2--O--CO--W基团(其中W表示具有1至8个碳原子的烷基,具有1至8个碳原子的烷基
氨基,取代或未取代的苯基或
噻吩基);以及R.sub.3;R.sub.4和R.sub.5,可以相同也可以不同,分别表示氢原子,卤原子或具有1至4个碳原子的低烷氧基。本发明还涉及作为有效成分的抗溃疡组合物。