2,6-disubstituted 4-quinolyl-dihydropyridines

A compound of the formula ##STR20## wherein R.sup.1 and R.sup.5 are identical or different and represent hydrogen, formyl, cyano, trifluoromethyl or methyl which is optionally substituted by hydroxyl, methoxy, acetoxy, amino or by a radical of the formula --O--(CH.sub.2).sub.a --OCH.sub.3 or --O--(CH.sub.2).sub.a' --NH.sub.2,

• in which
• a and a' are identical or different and denote a number 2 or 3,
• R.sup.2 represents nitro or cyano
• or
• R.sup.1 and R.sup.2 together form a lactone ring of the formula ##STR21## R.sup.3 represents phenyl which is optionally substituted by fluorine, chlorine, nitro, trifluoromethyl, methyl or methoxy,
• R.sup.4 represents a group of the formula --CO--A--R.sup.14,
• in which
• A denoted a direct bond or an oxygen atom
• and
• R.sup.14 denotes a straight-chain or branched, saturated hydrocarbon radical having up to 6 carbon atoms, which is optionally interrupted by oxygen and which is optionally substituted by cyclopropyl, cyclobutyl, cyclopentyl, cyano, phenyl, pyridyl or phenoxy, or is substituted by a group --NR.sup.22 R.sup.23,
• in which
• R.sup.22 and R.sup.23 are identical or different and denote hydrogen, straight-chain or branched alkyl having up to 4 carbon atoms, phenyl or benzyl,
• or a pharmaceutically acceptable salt thereof,
• with the proviso that R.sup.5 must not represent unsubstituted alkyl if R.sup.1 simultaneously denotes unsubstituted alkyl or R.sup.1 and R.sup.2 together form a lactone ring.