3-AMINO-DIHYDROPYRIDINES, PROCESS FOR THEIR PREPARATION AND THEIR USE AS MEDICAMENTS

摘要

Novel cardioactive compounds of the formula in which R1 is alkyl, aryl or heterocyclic, preferably substituted phenyl, R2 is alkyl, preferably methyl, R3 is hydrogen, halogen, acyloxy or alkyl, preferably hydrogen, and R4 is phenyl, carbalkoxy or together with R3 forms a ring, preferably carbalkoxy, are produced by reducing the corresponding nitro compounds.