Patents by Inventor Inge Schafer

Inge Schafer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4369325
    Abstract: A compound of the general formula (I), ##STR1## is described wherein R.sup.1 and R.sup.5 each represent a phenyl group optionally substituted with 1 to 3 lower alkoxy, halo, lower alkyl, monohalo-(lower)-alkyl, dihalo-(lower)-alkyl and/or trihalo-(lower)-alkyl groups, R.sup.2 stands for hydrogen or a lower alkyl group optionally substituted with a hydroxy group or 1 to 3 halogen atoms, R.sup.3 and R.sup.4 each represent a hydrogen atom or a lower alkyl group, and R.sup.6 stands for a carbamoyl, thiocarbamoyl or amidino group having optionally one or two lower alkyl and/or lower alkoxycarbonyl substitutes, or a group of the general formula R.sup.7 -CO-wherein R.sup.7 stands for a lower analkoxy group, an aryloxy group, or an aralkoxy group, and n is equal to 0, provided that when R.sup.1 and R.sup.5 each represent a phenyl group, R.sup.2 and R.sup.3 may not stand for hydrogen or a pharmaceutically acceptable acid addition salt, a pure isomer or an isomeric mixture thereof.
    Type: Grant
    Filed: August 11, 1981
    Date of Patent: January 18, 1983
    Assignee: EGYT Gyogyszervegyeszeti Gyar
    Inventors: Lajos Toldy, Zoltan Zubovics, Mariann Kurti, Inge Schafer
  • Patent number: 4342754
    Abstract: 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, andZ is a group of the formulae (II) to (VI), ##STR2## wherein R.sub.2 is methyl or ethyl,R.sub.3 is hydrogen or methylR.sub.4 is hydrogen, a C.sub.1-3 alkyl group, a di-(C.sub.1-4 alkyl)-amino-C.sub.1-4 alkyl group, a C.sub.2-4 alkylcarbonyl group, a C.sub.2-4 alkoxycarbonyl group or a C.sub.3-6 carboxyalkylcarbonyl group, andthe dotted lines may represent additional valence bonds, with the proviso that if Z is a group of the formula (VI), a double bond exists between the carbon atoms in positions 4 and 5 or 5 and 6, andif R.sub.4 is a di-(C.sub.1-4 alkyl)-amino-C.sub.1-4 alkyl group or a C.sub.3-6 carboxyalkylcarbonyl group, the compounds may also be formed as their salts.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: August 3, 1982
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Sandor Solyom, Katalin Szilagyi nee Farago, Lajos Toldi, Inge Schafer, Eleonora Szondy, Janos Borvendeg, Ilona Hermann nee Szente
  • Patent number: 4328221
    Abstract: 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; andZ is one of the following groups ##STR2## wherein R.sub.1 is hydrogen or methyl;R.sub.6 is hydrogen, C.sub.1 to C.sub.3 alkylthio or C.sub.2 to C.sub.4 acylthio; andX is oxo, hydroximino, C.sub.1 to C.sub.3 alkoxyimino, carboxy-alkoxyimino wherein the alkoxy has 2 to 4 carbon atoms or a salt-converted carboxy-alkoxy-imino wherein the alkoxy has 2 to 4 carbon atoms.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: May 4, 1982
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Katalin Szilagyi nee Farago, Sandor Solyom, Lajos Toldy, Inge Schafer, Eleonora Szondy, Janos Borvendeg, Ilona Hermann nee Szente
  • Patent number: 4284642
    Abstract: The invention relates to new compounds of the general formula (I), ##STR1## wherein R.sup.1 and R.sup.5 each represent a phenyl group, optionally substituted,R.sup.2 stands for hydrogen, formyl group, carboxy group, lower alkoxycarbonyl group, hydroxy-(lower)-alkoxycarbonyl group, or a lower alkyl group, optionally substituted,R.sup.3 and R.sup.4 each represent hydrogen atom or a lower alkyl group, with the proviso that when R.sup.1 and R.sup.5 each represent a phenyl group, R.sup.2 and R.sup.3 may not stand for hydrogen.These compounds possess valuable biological properties, and can be applied primarily as antiphlogistic or diuretic agents.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: August 18, 1981
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Lajos Toldy, Zoltan Zubovics, Mariann Kurti, Inge Schafer
  • Patent number: 4218446
    Abstract: Diuretic pharmaceutically active steroid-spiro-oxazolidinone compounds of the formula (I), ##STR1## wherein R.sup.1 is hydrogen or methyl,R.sup.2 is C.sub.1-4 alkyl,R.sup.3 is hydrogen, C.sub.1-4 alkyl or C.sub.2-4 alkenyl,Z.sup.1 and Z.sup.2 each are hydrogen or together form a second valence bond, or Z.sup.1 is hydrogen and Z.sup.2 is R.sup.4 --S--,Z.sup.3 and Z.sup.4 each are hydrogen or together form a second valence bond, or Z.sup.3 is hydrogen and Z.sup.4 is R.sup.4 --S--, with at least one of the pairs Z.sup.1 -Z.sup.2 and Z.sup.3 -Z.sup.4 representing hydrogen and an R.sup.4 --S-- group, andR.sup.4 is hydrogen or alkyl, alkenyl, aralkyl or acyl with up to 7 carbon atoms, provided that when Z.sup.1 and Z.sup.2 together form a valence bond, or Z.sup.1 represents a hydrogen atom and Z.sup.2 and R.sup.4 --S-- group then R.sup.1 is methyl.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: August 19, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt
    Inventors: Sandor Solyom, Lajos Toldy, Katalin Szilagyi nee Farago, Inge Schafer, Eleonora Szondy, Janos Borvendeg, Ilona Hermann nee Szente
  • Patent number: 4180505
    Abstract: 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;R.sub.2 is hydrogen, alkyl having from 1 to 4 carbon atoms, alkenyl having from 1 to 4 carbon atoms, or dialkylphosphinoxymethyl having in the alkyl moiety from 1 to 3 carbon atoms each;Z is one of the groups represented by the formulae III to XIV as subsequently defined therein.
    Type: Grant
    Filed: March 14, 1978
    Date of Patent: December 25, 1979
    Assignee: Richter Gedeon Vegyeszet, Gyar RT
    Inventors: Sandor S. L. Toldy, Katalin Szilagyi nee Farago, Inge Schafer, Eleonora Szondy, Janos Borvendeg, Ilona Hermann nee Szente
  • Patent number: 4028348
    Abstract: Novel 6-amino-5.alpha.,19-cycloandrostane derivatives of formula I and their pharmaceutically acceptable addition salts ##STR1## wherein X denotes any of the groups of the formula =CH(OR), =CO or =C=N-OR.sub.1,Y denotes any of the groups of the formula =CO, =CH(OR.sub.1), =C=N-OR.sub.1, =C(OR.sub.1)-C.tbd.CH or ##STR2## wherein R denotes a hydrogen atom, a C.sub.1-4 alkyl group or a C.sub.2-5 acyl group, andR.sub.1 denotes a hydrogen atom, a straight-chained or branched C.sub.1-5 alkyl group, a straight-chained or branched C.sub.1-5 hydroxyalkyl group, a C.sub.3-8 cycloalkyl group, an allyl group, or a benzyl group, andR.sub.3 has the same meaning as R.sub.2 but if R.sub.2 is a sec. or tert. alkyl group or an alicyclic group, then R.sub.3 can only be a hydrogen atom; and if R.sub.2 is a benzyl group then R.sub.3 can only be a hydrogen atom or a primary alkyl group, furtherR.sub.2 and R.sub.3 may denote together with the adjcacent nitrogen atom a piperidine, a morpholine, or an N-methylpiperazine group.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: June 7, 1977
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Pal Bite, Imre Moravcsik, Inge Schafer, Gyula Horvath, Zsuzsanna Mehesfalvi nee Vajna, Janos Borvendeg, Ilona Hermann nee Szente