Abstract: Novel tricyclic aminoalkyl derivatives are disclosed which are characterized by valuable pharmacological activities and namely by cardiac and circulatory activities. The tricyclic aminoalkyl derivatives are compounds of the formula: ##STR1## wherein X is an oxygen or a sulfur atom, a saturated or unsaturated, straight chain or branched alkylene group containing up to 3 carbon atoms, an oxymethylene, thiamethylene or thiaethylene group or a valency bond, R.sub.1 is hydrogen, halogen, alkyl, alkoxy or trifluoromethyl, R.sub.2 is hydrogen or hydroxyl, R.sub.3 is hydrogen or together with R.sub.2 represents a further valency bond, R.sub.4 and R.sub.

Abstract: New nitropyrazole compounds of the formula ##STR1## wherein R.sub.1 is alkyl or hydroxyalkylR.sub.2 and R.sub.3, which may be the same or different, are alkyl orR.sub.2 and R.sub.3 together represent a 4- or 5-membered alkylene bridge which is optionally interrupted by an oxygen atom or by the grouping >N-R, in which R is an alkyl or hydroxyalkyl radical;And the pharmacologically compatible salts thereof, possess excellent anti-microbial action not only in vitro but also in vivo, especially systemically.

Abstract: A N.sup.6 -substituted-9-[3-(4-phenyl-piperazino)-propyl]-adenine of the formula ##STR1## wherein R.sub.1 is hydrogen or a lower alkyl radical, andR.sub.2 is a lower alkyl radical, a lower alkyl radical substituted by at least one of phenyl and hydroxyl, a lower alkenyl radical, a cycloalkyl radical or an aryl radical, orR.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached form a piperidine, pyrrolidine or morpholine ring, andR.sub.3 is hydrogen, halogen, a lower alkyl radical or a lower alkoxy radical,Or a salt thereof with a pharmacologically compatible acid, which compounds are characterized by marked anti-edematous activity as well as by activity in reducing capillary permeability.

Abstract: A process for the preparation of a C22-alkyl-derivative of digoxin of the formula ##SPC1##In whichR.sub.1 is an alkyl radical containing up to 4 carbon atoms,R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, acyl, benzyl, carbobenzoxy, trimethylsilyl, tetrahydropyranyl or phosphonoacyl radicals or together form an alkylidene radical,Comprising reacting a compound of the formula ##SPC2##With an alkyl iodide of the formula R.sub.1 I in the presence of a strongly polar aprotic solvent and an alkali metal hydride. If R.sub.2 and R.sub.3 are other than hydrogen they can subsequently be replaced by hydrogen by hydrolysis or hydrogenation. The product can be .alpha.- or .beta.-methylated to produce compounds of high resorption and low toxicity.

Abstract: New 4-hydroxy-benzimidazole compounds of the formula: ##EQU1## wherein R.sub.1 is straight-chained or branched alkyl andR.sub.2 is hydrogen atom or lower alkylAnd the pharmacologically compatible salts thereof; are outstandingly effective in the treatment and prophylaxis of cardiac and circulatory diseases, and provide substantially greater margins of safety than prior art adrenergic .beta.-receptor inhibitors.

Abstract: Novel biphenyl derivatives of the formula: ##SPC1##WhereinR.sub.1 is phenyl, furyl or thienyl; andR.sub.2 is carboxyl or tetrazolyl-(5);And the pharmacologically compatible salts thereof display outstanding diuretic and saluretic properties.

Abstract: New dihydrodigoxin derivatives of the formula ##SPC1##Wherein one of R.sub.1 and R.sub.2 represents a methyl or ethyl radical and the other represents hydrogen, methyl, ethyl or acetyl (i.e. alkanoyl; and R.sub.3 is hydrogen or an acetyl group; are outstandingly effective for therapy of cardiac insufficiencies, particularly via peroral administration.