Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is ##STR2## R.sub.2 is alkyl of 2 to 15 carbon atoms; mono-substituted alkyl of 1 to 4 carbon atoms, the substituent being halogen, cyano, carbethoxy, optionally substituted phenyl or optionally substituted phenoxy; cycloalkyl of 3 to 6 carbon atoms; cycloalkyl of 3 to 6 carbon atoms-methyl; or N-trifluoromethylcarbonyl-aminoethyl;The compounds are useful as cardiotonics.

Abstract: Compounds of the formula ##SPC1##Wherein R.sub.3 is hydrogen, methyl, cyclopropylcarbonyl, benzoyl or thenoyl, andWhen R.sub.3 is hydrogen, R.sub.2 is phenyl, phenethyl, phenyl-propyl, chloro-propyl, chloro-phenyl, fluoro-phenyl, cycloalkyl of 3 to 8 carbon atoms or (cycloalkyl of 5 to 6 carbon atoms)-methyl, orWhen R.sub.3 is other than hydrogen, R.sub.2 is methyl, ethyl, phenyl, cyclopropyl or chloropropyl; the compounds are useful as cardiotonics.

Abstract: Compounds of the formula ##SPC1##WhereinR is ##SPC2##R.sub.1 is hydrogen or alkoxy of 1 to 4 carbon atoms, andR.sub.2 is alkoxy of 1 to 4 carbon atoms, orR.sub.1 and R.sub.2 together are oxygen;The compounds are useful as cardiotonics.

Abstract: Pharmaceutical compositions containing as an active ingredient a compound of the formula ##EQU1## wherein R.sub.1 is --(CH.sub.2).sub.x --CN, where x is 0,1,2 or 3,R.sub.2 is hydrogen, halogen, alkyl of 1 to 5 carbon atoms, alkoxy of 1 to 5 carbon atoms, alkenyl of 2 to 5 carbon atoms or alkenyloxy of 2 to 5 carbon atoms;R.sub.3 is hydrogen, halogen, alkyl of 1 to 5 carbon atoms or alkoxy of 1 to 5 carbon atoms;R.sub.2 and R.sub.3, together with each other and the carbon atoms to which they are attached, form a saturated or unsaturated carbocyclic ring of up to 6 carbon atoms;R.sub.4 is hydrogen, alkyl of 1 to 5 carbon atoms or aralkyl; andn is an integer from 1 to 10, inclusive; or a non-toxic, pharmacologically acceptable acid addition salt thereof; and a method of using the same as .beta.-adrenergic receptor blockers and hypotensives.

Abstract: Compounds of the formula ##EQU1## wherein R.sub.1 is allyl, allyloxy or chlorine, R.sub.2 is hydrogen or methyl,R.sub.3 is hydrogen, alkyl of 1 to 5 carbon atoms or benzyl, andn is an integer from 2 to 6, inclusive,Provided, however, that when R.sub.1 is allyl or allyloxy, R.sub.2 is hydrogen; and their non-toxic, pharmacologically acceptable acid addition salts; the compounds as well as their salts are useful as .beta.-adrenergic blocking agents and hypotensives.

Abstract: Compounds of the formula ##SPC1##WhereinA is alkylene of 2 to 6 carbon atoms,R.sub.1 is hydrogen, lower alkyl, lower alkoxy, hydroxyl, or lower alkanoyloxy,R.sub.2 is hydrogen, lower alkyl or lower alkoxy,R.sub.3 is hydrogen, methyl or ethyl,R.sub.4 is hydrogen, lower alkyl or lower alkoxy,R.sub.5 is hydrogen, hydroxyl, lower alkanoyloxy or lower alkyl-sulfonamido, andR.sub.6 is hydrogen or lower alkanoyl,And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as peripheral vasodilators, antihistaminics and spasmolytics.

Abstract: Racemic or optically active compounds of the formula ##EQU1## wherein R.sub.1 is hydrogen, halogen, alkyl or 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, andR.sub.2 is straight or branched hydroxyalkyl of 3 to 6 carbon atoms,And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as the salts are useful .beta.-adrenergic receptor blocking agents and hypotensives.

Abstract: Compounds of the formula ##EQU1## wherein n is 4 or 5, and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as .beta.-adrenergic receptor blocking agents.

Abstract: Pharmaceutical dosage unit compositions containing as an active ingredient a compound of the formula ##SPC1##Wherein R.sub.1 is alkyl of 2 to 12 carbon atoms, halo-(alkyl of 1 to 4 carbon atoms), aryl-(alkyl of 1 to 4 carbon atoms), cycloalkyl-(alkyl of 1 to 4 carbon atoms) or cycloalkyl of 3 to 8 carbon atoms; and a method of using the same as cardiotonics.