Richter Gedeon Vegyeszeti Gyar Rt

Eleonora Szondy

Janos Borvendeg

Inge Schafer

Katalin Szilagyi Nee Farago

Ilona Hermann Nee Szente

Sandor Solyom

Lajos Toldy

Lajos Toldi

Sandor S Toldy

New steroid-spiro-oxathiazolidine derivatives pharmaceutical compositions containing the same, and to a process for the preparation thereof are disclosed. The new compounds have antimineral corticoide effects and have the following formula (I), ##STR1## wherein R.sub.1 is a C.sub.1-3 alkyl or a C.sub.2-4 alkenyl group, and

Steroid-spiro-oxathiazolidine derivatives and a process for the

Compounds of the formula (I) having aldosterone-antagonizing activity are disclosed ##STR1## wherein R.sub.3 and R.sub.4 are each C.sub.1 to C.sub.3 alkyl; and

Substituted steroid-spiro-oxazolidinone derivatives and a process for

Diuretic pharmaceutically active steroid-spiro-oxazolidinone compounds of the formula (I), ##STR1## wherein R.sup.1 is hydrogen or methyl,

The invention relates to novel spirooxazolidines represented by the formula I ##STR1## wherein R.sub.1 is alkyl having from 1 to 4 carbon atoms;

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Budapest, Hungary

Eleonora Szondy