2-(4-alkoxyethoxypydridin-2-yl)methylthio-, sulfinyl- or sulfonykbenzimidazole derivatives and therapeutic agent for ulcer comprising the same

Abstract From the Canadian patent

A pyridine compound having the formula: (see fig. I), (wherein R1 and R2 which may be the same or different are each a hydrogen atom, a lower alkyl group, a lower alkoxy group a, halogenated lower alkyl group, or a halogen atom one of R3 and, R4 is a hydrogen atom and the other is a methyl group X is a, group represented by the formula: -S-, (see fig.II), or (see fig.III), and n is an integer of 3 or 4 or a pharmaceutically acceptable salt thereof is useful in treating peptic ulcer.