THIAZOLE AND IMIDAZOLE DERIVATIVES AND ANTIULCER COMPOSITION CONTAINING SAME

摘要

A thiazole or imidazole derivative having the general formula (I): (see fig. I) wherein: R1 and R2, which may be the same or different, each independently represent a hydrogen atom, or a phenyl or heteroaryl group, or R1 and R2 may together form a benzene ring which may be optionally substituted by a halogen atom or a lower alkyl optionally substituted by a halogen atom, lower alkoxy or nitro group; A represents a sulfur atom or -NH-; B represents a lower alkoxy group optionally substituted by a halogen atom; a five- or six-membered saturated heterocyclic ring containing one nitrogen or oxygen atom which ring may be optionally substituted; a six-membered saturated heterocyclic ring containing one oxygen atom plus one nitrogen atom; a group -XR3 where X represents a group -NR4 wherein R3 and R4, which may be the same or different, each independently represent a lower alkyl group; or a group -NHC(=Y)R5 where Y represents an oxygen or sulfur atom or a group =NCN or =CHNO2, and R5 represents a group -NHR6 or -SR6 wherein R6 represents a lower alkyl group optionally substituted by a halogen atom; m is an integer from 1 to 4; and n is an integer from 0 to 2; and their pharmacologically acceptable salts. The compounds has an antiulcerative activity.