| abstract |
Compounds of the formula <IMAGE> wherein R1 and R2, which may be identical to or different from each other, are each hydrogen, chlorine, bromine or alkyl of 1 to 3 carbon atoms, A is alkylene of 1 to 5 carbon atoms, and R6 and R7, together with each other and the nitrogen atom to which they are attached, form a heterocycle selected from the group consisting of morpholino, piperazino or N'-dimethylphenyl-piperazino, and R5 is hydrogen, alkyl of 1 to 3 carbon atoms, hydroxyethyl, diethylamino-ethyl or furfuryl, PROVIDED, HOWEVER, THAT R1 and R2 are other than both hydrogen or both alkyl at the same time, and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as the salts are useful as hypotensives, platelet aggregation inhibitors and antiarrhythmics. |