| abstract |
New aminopropanol derivatives of the formulas in which R 1 and R 2 are hydrogen, lower alkyl or together an alkylene radical, R 3 is hydrogen or an acyl radical, R 4 is hydrogen or an optionally substituted lower alkyl radical, R 5 and R 6 are each a lower alkyl radical and B is an alkylamino radical which may be phenyl - And / or phenoxy residues, which are optionally substituted, or can be substituted by an optionally substituted aryl or heteroaryloxymethylpiperidine residue, their pharmacologically acceptable salts, processes for their preparation and pharmaceutical preparations with a β-reseptoric blocking and hypotensive effect, which contain these substances . |