Roussel Uclaf

Josette Benzoni

Roger Deraedt

Vesperto Torelli

Francoise Delevallee

Jean G Teutsch

Jean Vacher

A method of inducing immunostimulating activity in warm-blooded animals comprising administering to warm-blooded animals an immunostimulating amount of at least one maleo-pimaric acid compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 together with the nitrogen to which they are attached form an optionally substituted saturated heterocycle optionally containing at least one other heteroatom, Y is selected from the group consisting of hydrogen, amino, alkyl of 1 to 5 carbon atoms optionally substituted with at least one hydroxy, dialkylamino with alkyl of 1 to 5 carbon atoms, alkoxy carbonyl of 2 to 5 carbon atoms, acyl of an organic carboxylic acid of 1 to 5 carbon atoms and ##STR2## X is an alkylene of 1 to 5 carbon atoms and R.sub.1 and R.sub.2 have the above definition.

Method of inducing immunostimulating activity

Novel 9.alpha.,11.beta.-dichloro-16.alpha.-methyl-.DELTA..sup.1,4 -pregnadiene 3,20-diones of the formula ##STR1## wherein R is selected from the group consisting of trimethylsilylphenyl, cyclododecyloxy, dicyclopentylmethoxy and cyclohexylmethoxy having a suprising 'in loco' anti-inflammatory activity limited to place of inflammation without systemic effects and a process for their preparation.

Steroids

A compound selected from the group consisting of: 3-amino-.DELTA..sup.5 -pregnenes of the formula I: ##STR1## wherein X is selected from the group of ##STR2## the wavy lines indicate that the group may be in the .alpha.-or .beta.-position, R.sub.1 is selected from the group consisting of hydrogen and hydroxyalkyl or 2 to 5 carbon atoms, R.sub.2 is selected from the group consisting of hydrogen, hydroxyalkyl of 2 to 5 carbon atoms, acyl of an aliphatic carboxylic acid of 3 to 8 carbon atoms, alkoxycarbonyl of 2 to 8 carbon atoms, acyl of an .alpha.-amino-carboxylic acid or from a peptide of 2 to 3 amino acids of which amines may be either unsubstituted or mono-or disubstituted with alkyl of 1 to 5 carbon atoms with the proviso that R.sub.1 and R.sub.2 are not both hydrogen and that if the 3-amino group is in the .beta.-position, (i) when X is ##STR3## R.sub.1 and R.sub.2 are not both hydroxyethyl or (ii) when X is ##STR4## and R.sub.1 is hydrogen, R.sub.2 is not ethoxycarbonyl, the compound of the formula I wherein X is ##STR5## R.sub.1 is hydrogen and R.sub.2 is methyl, the 3-amino group is in the .alpha.-position and their non-toxic, pharmaceutically acceptable acid addition salts which are useful as stimulants of the mammalian immune system.

Derivatives of 3-amino-pregn-5-ene

A 3-amino-steroid of the formula ##STR1## wherein W is selected from the group consisting of hydrogen and --OH and taken together with X is ethylidene, X is selected from the group consisting of ethyl, ##STR2## the wavy line indicates the substituent has the .alpha.- and .beta.-position, R.sub.1 is selected from the group consisting of hydrogen and --CH.sub.3, R.sub.2 is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms and hydroxyalkyl of 2 to 5 carbon atoms, R.sub.3 is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms, hydroxyalkyl of 2 to 5 carbon atoms, acyl of organic acid of 2 to 8 carbon atoms, alkoxycarbonyl of 2 to 8 carbon atoms, acyl of an .alpha.-amino-carboxylic acid and a peptide of 2 to 3 .alpha.-amino-carboxylic acids and their non-toxic, pharmaceutically acceptable acid addition acids with the proviso that R.sub.2 and R.sub.3 are not both hydrogen and (i) when R.sub.1 is methyl, W and R.sub.2 are hydrogen and X is ##STR3## in the case R.sub.3 is not methyl, acetyl or derived from an anminocarboxylic acid, (ii) when R.sub.1 is --CH.sub.3, W is hydrogen, R.sub.2 is --CH.sub.3 and X is ##STR4## in the case R.sub.3 is not methyl or acetyl, (iii) when R.sub.1 is methyl, R.sub.2 and W are hydrogen, X is ##STR5## with the --OH having the (S) configuration and the amino group is in the .alpha.-position in the case R.sub.3 is not methyl (iiii) R.sub.2 and W are hydrogen, X is ##STR6## and the 3-amino is in the .alpha.-position in the case at least one of R.sub.1, R.sub.2 and R.sub.3 is not methyl and (iiiii) R.sub.2 and W are hydrogen, R.sub.1 is methyl, X is ##STR7## with the --OH having the (R) configuration and the 3-amino is in the .alpha.-position in the case R.sub.3 is not ethoxycarbonyl capable of stimulating the defenses of an organism, especially by potentializing the production of IgE (immunoglobulins E) and their preparation.

Growing community of inventors

Livry Gargan, France

Josette Benzoni