This invention relates to new compounds corresponding to the general formula: ##STR1## R.sub.1 represents a C.sub.3 -C.sub.10 cycloalkyl group substituted by C.sub.1 -C.sub.6 alkyl radicals, a C.sub.3 -C.sub.19 -cycloalkyl-C.sub.1 -C.sub.4 alkyl group which may be substituted by C.sub.1 -C.sub.6 alkyl radicals, a C.sub.6 -C.sub.8 bicycloalkyl group, a C.sub.6 -C.sub.8 bicycloalkyl-C.sub.1 -C.sub.4 alkyl group, a C.sub.6 -C.sub.10 tricycloalkyl group, a C.sub.6 -C.sub.10 tricycloalkyl-C.sub.1 -C.sub.4 alkyl group, a C.sub.6 -C.sub.9 tetracycloalkyl group or a C.sub.6 -C.sub.9 -tetracycloalkyl-C.sub.1 -C.sub.4 alkyl group,R.sub.2 represents hydrogen, a C.sub.1 -C.sub.6 alkyl group, a phenyl-C.sub.1 -C.sub.4 alkyl group or a C.sub.1 -C.sub.6 alkyl group which is substituted by halogen atoms, nitro groups, hydroxy groups, C.sub.2 -C.sub.6 alkanoyloxy groups, C.sub.1 -C.sub.4 alkoxy groups, C.sub.1 -C.sub.4 alkoxy carbonyl groups or carboxy groups,R.sub.3 represented hydrogen, the 2-[5-(dimethylaminomethyl)-2-furyl-methylthio]-ethyl group, a C.sub.1 -C.sub.18 -alkyl group, a C.sub.3 -C.sub.6 -cycloalkyl group, a C.sub.3 -C.sub.6 -alkenyl group, a C.sub.3 -C.sub.6 -alkinyl group, an amino-C.sub.1 -C.sub.4 -alkyl group, a C.sub.2 -C.sub.6 -alkanoylamino-C.sub.1 -C.sub.4 -alkyl group, a mono-C.sub.1 -C.sub.6 -alkylamino-C.sub.1 -C.sub.4 -alkyl group, a di-C.sub.1 -C.sub.6 -alkylamino-C.sub.1 -C.sub.4 -alkyl group or a C.sub.1 -C.sub.18 -alkyl group, which is substituted by halogen atoms, nitro groups, hydroxy groups, C.sub.2 -C.sub.6 alkanoyloxy groups, C.sub.1 -C.sub.4 alkoxy groups, C.sub.1 -C.sub.4 alkoxycarbonyl groups or carboxy groups,A represents a nitrogen atom or a methine group,B represents a cyano radical or a nitro group, andX represents an oxygen atom or a sulphur atom, and salts thereof.The compounds inhibit the secretion of gastric juice. Moreover, they have an ulcer-inhibiting and stomach-spasmolytic effect.