Beta-oxo-beta-benzenepropanethioamide derivatives

摘要

The beta -oxo- beta -benzenepropanethioamide derivative of the general formula I (in the above formula (I), R<1> and R<2> independently represent hydrogen atom, an alkyl goup of C1 to C6 or a cycloalkyl group of C3 to C6, or R<1> and R<2>, when taken together, represent an alkylene group of C3 to C6; R<3> represents hydrogen atom, an alkyl group of C1 to C6 or a cycloalkyl group of C3 to C6; R<4> represents an alkyl group of C1 to C6 or a cycloalkyl group of C3 to C6; or R<3> and R<4>, when taken together, represent an alkylene group of C2 to C5; X<1>, X<2> and X<3> indepentdently represent hydrogen atom, a halogen atom, an alkyl group of C1 to C6, a cycloalkyl group of C3 to C6, an alkoxy group of C1 to C6, trifluoromethyl group, cyano group, nitro group, a dialkylamino group of C2 to C12, sulfamoyl group, a five-membered or six-membered heterocyclic group containing nitrogen atom as the hetero atom, has potassium channel opening action and is useful for treatment of hypertension, asthma, hypersensitive colon syndrome, and enteritis through pharmacological actions including blood vessel dilation, bronchial tract dilation, relaxation of gastrointestinal tract smooth muscle, and the like. The present invention also includes a pharmaceutical composition containing, as the active ingredient, the compound of the present invention and a method for producing the same.