Abstract: Novel 20,21-dinoreburnamenines of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and .dbd.CH.sub.2, the wavy line connecting to the E ring being a single bond when R is hydrogen or alkyl of 1 to 4 carbon atoms or a double bond when R is .dbd.CH.sub.2 and the dotted line being possibly an endo carbon-carbon bond when R is hydrogen or alkyl of 1 to 4 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts in all their possible isomers forms, racemic mixtures and optical isomers having oxygenating and cerebral vasoregulating activity of great value and a novel process and intermediates for their preparation.

Abstract: Diseases and ailments accompanied by gastric and gastroduodenal lesions treated by administering a compound of the formula (I) ##STR1## in which R represents hydrogen or alkyl containing 1 to 5 carbon atoms and R.sub.1 and R.sub.2, identical or different, both represent alkoxy containing 1 to 3 carbon atoms, or both represent halogen, or R.sub.1 represents hydrogen and R.sub.2 represents halogen, nitro or trifluoromethyl, or R.sub.1 and R.sub.2 form a methylenedioxy group at adjacent carbon atoms, as well as pharmaceutically acceptable salts thereof, particularly alkali metal, alkaline earth metal, or amine salts of said acid.

Abstract: Diseases and ailments accompanied by gastric and gastroduodenal lesions treated by administering a compound of the formula (I) ##STR1## in which R represents hydrogen or alkyl containing 1 to 5 carbon atoms and R.sub.1 and R.sub.2, identical or different, both represent alkoxy containing 1 to 3 carbon atoms, or both represent halogen, or R.sub.1 represents hydrogen and R.sub.2 represents halogen, nitro or trifluoromethyl, or R.sub.1 and R.sub.2 form a methylenedioxy group at adjacent carbon atoms, in their racemic and optically active forms, as well as pharmaceutically acceptable salts thereof, particularly alkali metal, alkaline earth metal, or amine salts of said acid.

Abstract: Novel 7-alkyl-.DELTA..sup.4 -17.alpha.-pregnene-3-ones of the formula ##STR1## wherein R is selected from the group consisting of saturated and unsaturated alkyl of 2 to 8 carbon atoms, cycloalkyl alkyl of 4 to 8 carbon atoms and arylalkyl of 7 to 12 carbon atoms and X and Y form the group ##STR2## or X is OH and Y is ##STR3## and M is selected from the group consisting of hydrogen, alkali metal and NH.sub.4 and the wavy line indicates the .alpha.- or .beta.-position or mixtures thereof having aldosterone antagonistic activity and increased hydrosodium diuresis with organic potassium conservation while devoid of secondary hormonal effects and their preparation.