Abstract: Compounds of the general formula: ##STR1## wherein: the ring A is saturated and n=0 or 1, orthe ring A is a benzene ring and n=1,R.sub.1 represents a lower alkyl group which can carry an amino group,R.sub.2 represents a hydrogen atom or a lower alkyl group,R.sub.3 represents a straight or branched alkyl group, a mono- or di-cycloalkylalkyl or phenylalkyl group having no more than a total of 9 carbon atoms, or a substituted alkyl group, and also the salts thereof.These compounds are useful as therapeutic drugs.

Abstract: Compounds of the general formula: ##STR1## wherein: the ring A is saturated and n=0 or 1, orthe ring A is a benzene ring and n=1,R.sub.1 represents a lower alkyl group which can carry an amino group,R.sub.2 represents a hydrogen atom or a lower alkyl group,R.sub.3 represents a straight or branched alkyl group, a mono- or di-cycloalkylalkyl or phenylalkyl group having no more than a total of 9 carbon atoms, or a substituted alkyl group, and also the salts thereof.These compounds are useful as therapeutic drugs.

Abstract: Compounds of the general formula: ##STR1## wherein: the ring A is saturated and n=0 or 1, orthe ring A is a benzene ring and n=1,R.sub.1 represents a lower alkyl group which can carry an amino group,R.sub.2 represents a hydrogen atom or a lower alkyl group,R.sub.3 represents a straight or branched alkyl group, a mono- or di-cycloalkylalkyl or phenylalkyl group having no more than a total of 9 carbon atoms, or a substituted alkyl group, and also the salts thereof.These compounds are useful as thereapeutic drugs.

Abstract: Compounds of the general formula: ##STR1## wherein: the ring A is saturated and n=0 or 1, orthe ring A is a benzene ring and n=1,R.sub.1 represents a lower alkyl group which can carry an amino group,R.sub.2 represents a hydrogen atom or a lower alkyl group,R.sub.3 represents a straight or branched alkyl group, a mono- or di-cycloalkylalkyl or phenylalkyl group having no more than a total of 9 carbon atoms, or a substituted alkyl group, and also the salts thereof.These compounds are useful as therapeutic drugs.

Abstract: Compounds of the general formula: ##STR1## wherein: the ring A is saturated and n=0 or 1, orthe ring A is a benzene ring and n=1,R.sub.1 represents a lower alkyl group which can carry an amino group,R.sub.2 represents a hydrogen atom or a lower alkyl group,R.sub.3 represents a straight or branched alkyl group, a mono- or di-cycloalkylalkyl or phenylalkyl group having no more than a total of 9 carbon atoms, or a substituted alkyl group, and also the salts thereof.These compounds are useful as therapeutic drugs.

Abstract: New xanthine compounds of the formula: ##STR1## in which: R.sub.1 is hydrogen or alkyl from C.sub.1 to C.sub.5 inclusive;R.sub.2 is a hydrocarbon radical up to C.sub.6 having optionally a double bond, phenyl or benzyl;R.sub.3 is hydrogen, alkyl, hydroxyalkyl or dihydroxyalkyl each from C.sub.1 to C.sub.5R.sub.4 represents: ##STR2## in which: Y is hydrogen, halogen, alkyl or alkoxy from C.sub.1 to C.sub.5 or hydroxyl;Z is methylene or a straight or branched hydrocarbon radical from C.sub.2 to C.sub.5 optionally substituted by hydroxyl; andA is an amino group of the formula: ##STR3## p being 2 or 3; ##STR4## in which q is 1 or 2, and X is a single bond, oxygen or ##STR5## in which R.sub.5 is hydrogen, alkyl or alkylene up to C.sub.5, or ##STR6## in which m is an integer from 2 to 6 and R.sub.6 is alkyl from C.sub.1 to C.sub.5.

Abstract: Piperazine and homopiperazine compounds of the formula: ##STR1## in which: A is a hydrocarbon radical from C.sub.3 to C.sub.5, in a straight or branched chain, which may contain one or two double bonds, and optionally substituted by one or more OH;B is CH or a nitrogen atom;m is 2 or 3;X--Y-- represents --CH.dbd.CH--(CR'R").sub.n - in which n is zero or 1, and R' and R" are hydrogen or methyl;Z is oxygen or sulfur,R is hydrogen, alkyl from C.sub.1 to C.sub.5, cycloalkyl from C.sub.3 to C.sub.7, or phenyl optionally substituted by fluorine, chlorine or alkyl from C.sub.1 to C.sub.5, andT is hydrogen, fluorine, chlorine or alkyl from C.sub.1 to C.sub.5.These compounds and physiologically tolerable acid addition salts thereof may be used as medicines especially in the treatment of all kinds of tissular hypoxia.

Abstract: Polymethylene-imines of the formula: ##STR1## in which: A is a hydrocarbon radical from C.sub.3 to C.sub.5 in a straight or branched chain possibly containing one or two double bonds and possibly substituted by one or more hydroxy radicals;X is CH or nitrogen;n is zero, one or two;Y is oxygen or N--R.sub.1 in which R.sub.1 is hydrogen, alkyl from C.sub.1 to C.sub.5, alkenyl from C.sub.2 to C.sub.5, cycloalkyl or cycloalkenyl from C.sub.3 to C.sub.7, or acetyl;R is hydrogen, alkyl from C.sub.1 to C.sub.5, cycloalkyl from C.sub.5 to C.sub.7 or phenyl optionally substituted by one or more fluorine or chlorine; andB is hydrogen, alkyl from C.sub.1 to C.sub.5, alkenyl from C.sub.2 to C.sub.5, or phenyl, naphthyl, benzofuranyl, benzothienyl, benzodioxolyl, benzodioxanyl, benzodioxinyl, .DELTA.3-chromanyl, thiochromenyl or chromanyl, each optionally substituted by fluorine, chlorine, alkyl or alkoxy from C.sub.1 to C.sub.5 ; ora radical of the formula: ##STR2## in which: R.sub.2, R.sub.3 and R.sub.

Abstract: N,N'-substituted polymethylene diamines of the formula: ##STR1## in which: A is a hydrocarbon radical from C.sub.3 to C.sub.5 in a straight or branched chain optionally containing one and two double bonds and possibly substituted by one or more hydroxy radicals;X is CH or nitrogen;n is an integer from 2 to 6;R.sub.1 is hydrogen, or alkyl from C.sub.1 to C.sub.5 ;R.sub.2 is hydrogen, alkyl from C.sub.1 to C.sub.5, cycloalkyl from C.sub.5 to C.sub.7, or phenyl optionally substituted by one or more fluorine or chlorine, andB is:phenyl, naphthyl, benzofuranyl, benzothionyl, benzodioxolyl, benzodioxanyl, benzodioxinyl, .DELTA.3-chromenyl, thiochromenyl or chromanyl, each of them optionally substituted by fluorine, chlorine, alkyl or alkoxy from C.sub.1 to C.sub.5, or methylene-dioxy, ora radical of the formula: ##STR2## in which R.sub.3, R.sub.4 and R.sub.5 which may be the same or different, each represent hydrogen or phenyl optionally substituted by fluorine or chlorine.

Abstract: Compounds of the general formula: ##STR1## wherein: the ring A is saturated and n=0 or 1, orthe ring A is a benzene ring and n=1,R.sub.1 represents a lower alkyl group which can carry an amino group,R.sub.2 represents a hydrogen atom or a lower alkyl group,R.sub.3 represents a straight or branched alkyl group, a mono- or di-cycloalkylalkyl or phenylalkyl group having no more than a total of 9 carbon atoms, or a substituted alkyl group, and also the salts thereof.These compounds are useful as therapeutic drugs.

Abstract: Compounds corresponding to the general formula: ##STR1## in which X and Y identical or different, represent a hydrogen or a halogen atom, a lower alkyl, a lower alkoxy or a trifluormethyl group,A represents a methylene group, a direct bond or an imino--NR.sub.3 -- group in which R.sub.3 is a hydrogen atom or a lower alkyl or lower alkanoyl groupR.sub.1 and R.sub.2 identical or different, each represents a hydrogen atom or a lower alkyl group, or together with the nitrogen atom to which they are attached they form a pyrrolidino, piperidino or methyl-4 piperazine group, andn represents an integer from 1 to 3, in their racemic or optical isomeric forms, as well as their salts of addition with a therapeutically compatible mineral or organic acid.These compounds are useful as antidepressants.

Abstract: Piperazine and homopiperazine compounds of the formula: ##STR1## in which: A is a hydrocarbon radical from C.sub.3 to C.sub.5, in a straight or branched chain, which may contain one or two double bonds, and optionally substituted by one or more OH;B is CH or a nitrogen atom;m is 2 or 3;X--Y-- represents --CH.dbd.CH-- (CR'R").sub.n -- in which n is zero or 1, and R' and R" are hydrogen or methyl;Z is oxygen or sulfur,R is hydrogen, alkyl from C.sub.1 to C.sub.5, cycloalkyl from C.sub.3 to C.sub.7, or phenyl optionally substituted by fluorine, chlorine or alkyl from C.sub.1 to C.sub.5, andT is hydrogen, fluorine, chlorine or alkyl from C.sub.1 to C.sub.5.These compounds and physiologically tolerable acid addition salts thereof may be used as medicines especially in the treatment of all kinds of tissular hypoxy.