| abstract |
5-Aryl-1,4-dihydropyridines of the formula <IMAGE> in which R represents cycloalkyl, heteroaryl or aryl which is optionally substituted by at least one substituent independently selected from the group consisting of halogen, nitro, hydroxyl, amino, carboxyl, alkoxycarbonyl, cyano, acyl, acyloxy, acylthio, by alkyl, alkyloxy, alkylthio or alkylsulphonyl, each of which is optionally substituted by one or more halogens, by aryl which is optionally substituted by alkyl, alkoxy, halogen or nitro, or optionally by the group -Z-CH2-R4, where Z represents oxygen or sulphur, and R4 represents cycloalkyl, heteroaryl or aryl which is optionally substituted by halogen, cyano, nitro, hydroxyl, carboxyl, alkoxycarbonyl or by alkyl or alkoxy, each of which is optionally substituted by one or more halogens, R1 and R2 are identical or different and represent straight-chain or branched alkyl which is optionally substituted by aryl, carboxyl, alkoxycarbonyl or by hydroxyl, R3 represents nitro, cyano or the group <IMAGE> where A represents oxygen, sulphur or -N-R6, R6 represents hydrogen, phenyl or alkyl, and where R5 represents hydrogen, cycloalkyl or a hydrocarbon radical which is optionally interrupted in the chain by one or more carbonyl groups and/or sulphur and/or oxygen atoms and is optionally substituted by halogen, nitro, cyano, hydroxyl, mercapto, carboxyl, alkoxycarbonyl, aryl, acyloxy, acylthio, heteroaryl or by an amino group, the amino group carrying one or two identical or different substituents from the group comprising phenyl, alkyl or aralkyl, X and Y are identical or different and represent hydrogen, alkyl, alkoxy or alkoxycarbonyl, halogen, hydroxyl, nitro, carboxyl, cyano or trifluoromethyl or trifluoromethoxy, or physiologically acceptable salts thereof, are active on the cardiovascular system. |