- 2,6-dialkyl-4-(benzothiazol- or benzoxazol-4-yl-1,4-dihydropyridines
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2,6-dialkyl-4-(benzothiazol- or benzoxazol-7-yl)-1,4-dihydropyridines which exhibit positive inotropic action with largely neutral vascular behavior, of the formula STR1 in which R1 and R5 are identical or different and represent straight-chain or branched alkyl having up to 8 carbon atoms, R2 represents nitro or cyano, or R1 and R2 together form a lactone ring of the formula STR2 R3 represents a radical of the formula STR3 R4 -R7 are defined hereinafter and physiologically acceptable salts thereof.
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