摘要：

Compounds of the formula: ##STR1## and physiologically acceptable acid addition salts thereof, in which R.sup.1 is< P>A. AN ARYLALKYL GROUP, THE ALKYL PORTION OF WHICH CONTAINS FROM 1 TO 6 CARBON ATOMS AND THE ARYL PORTION OF WHICH MAY BE SUBSTITUTED BY ONE OR MORE ALKOXY GROUPS OR HYDROXY GROUPS; ORB. AN ARYLOXYALKYL GROUP, THE ALKYL PORTION OF WHICH CONTAINS FROM 1 TO 6 CARBON ATOMS, AND THE ARYLOXY PORTION OF WHICH IS SUBSTITUTED WITH ONE OR MORE ALKOXY OR HYDROXY GROUPS.These compounds have a blocking action on both &agr;- and &bgr;-adrenergic receptors. Processes for the production of these compounds and pharmaceutical compositions containing them are also provided.

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