Patents by Inventor Lajos Toldy

Lajos Toldy 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: 5854250
    Abstract: An N-benzoylamino acid compound of the formula (I), ##STR1## wherein R.sup.3 is an NR.sup.4 R.sup.5 group where R.sup.4 and R.sup.5 which are the same or different are selected from the group consisting of hydrogen, a hydroxyl group, a C.sub.1-12 alkyl group, a C.sub.1-4 alkyl group substituted by a hydroxyl group and a C.sub.1-4 alkyl group substituted by an amino group;R.sup.4 and R.sup.5 when taken together with the adjacent nitrogen form a substituted or unsubstituted 5- or 6-membered heterocyclic group, a 5- or 6-membered heterocyclic group containing an additional nitrogen atom, a 5- or 6-membered heterocyclic group containing an additional nitrogen atom and being substituted by an oxo group, a phenyl-substituted C.sub.1-4 alkyl group or C.sub.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: December 29, 1998
    Assignee: Gyogyszerkutato Intezet KFT
    Inventors: Peter Matyus, Erzsebet Zara, Lajos Farkas, Agnes Papp, Antal Simay, Lajos Toldy, Ferenc Andrasi, Katalin Goldschmidt, Eszter Hodula, Ildiko Mathe, Klara Sutka, Zsuzsanna Fittler, Valeria Vitkoczi, Laszlo Sebestyen, Istvan Sziraki, Marta Rusz, Eva Gal
  • Patent number: 5705529
    Abstract: The invention relates to novel N-benzoylamino acid derivatives of the general formula (I), ##STR1## wherein R.sup.1 and R.sup.2, which are the same or different, stand for a hydroxyl group optionally bearing an acetyl group; or a C.sub.1-6 alkoxy group optionally substituted by a phenyl group;n means an integer from 2 to 15as well as their tautomers, racemates and optically active individual (pure) isomers or mixtures thereof and the salts of these compounds and pharmaceutical compositions containing these compounds.The invention relates also to a process for the preparation of compounds of the general formula (I).
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: January 6, 1998
    Assignee: Gyogyszerkutato Intezet KFT
    Inventors: Peter Matyus, Erzsebet Zara, Lajos Farkas, Agnes Papp, Antal Simay, Lajos Toldy, Ferenc Andrasi, Katalin Goldschmidt, Eszter Hodula, Ildiko Mathe, Klara Sutka, Zsuzsanna Fittler, Valeria Vitkoczi, Laszlo Sebestyen, Istvan Sziraki, Marta Rusz, Eva Gal
  • Patent number: 5380724
    Abstract: This invention relates to novel compounds of the general formula (I) and the pharmaceutically acceptable acid addition salts thereof. In the general formula (I) ##STR1## wherein Lip, A.sup.1, A.sup.2, Het and n are defined as in the specification. The compounds of the general formula (I) inhibit the lipid peroxidation and therefore, they are useful for the treatment or prevention of diseases and conditions wherein the inhibition of lipid peroxidation is desirable.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: January 10, 1995
    Assignee: Gyogyszerkutato Intezet KFT
    Inventors: Zoltan Zubovics, Katalin Goldschmidt, Katalin Szilagyi, Ferenc Andrasi, Eszter Hodula, Lajos Toldy, Klara Sutka, Zsuzsanna Fittler, Laszlo Sebestyen, Katalin Gorgenyi, Istvan Sziraki, Jozsef Gyimesi, Valeria Vitkoczi
  • Patent number: 5037830
    Abstract: The present invention relates to novel compounds of the formula (I), ##STR1## wherein R.sub.1 and R.sub.2 stand independently from each other, for hydrogen, C.sub.1-4 alkyl, phenyl, phenyl-C.sub.1-4 alkyl, piridyl or piridyl-C.sub.1-4 alkyl group;E means a straight or branched, saturated hydrocarbon chain containing 1 to 6 carbon atoms;R.sub.3 represents: a phenyl group ortho-substituted by a C.sub.2-5 alkanoylamino, N-C.sub.2-5 alkanoyl-N-C.sub.1-4 alkylamino or di(C.sub.1-4 alkyl)amino group and optionally further substituted by halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or C.sub.2-5 alkanoyloxy group; or a pyridyl group optionally mono- or polysubstituted by halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.2-5 alkanoyloxy or phenyl-C.sub.1-4 alkoxy groupas well as their acid addition salts and tautomeric forms of these compounds.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: August 6, 1991
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Gabor Zolyomi, Ferenc Andrasi, Pal Berzsenyi, Elemer Ezer, Tibor Hasko, Erzsebet F. Birkas, Erno Koltai, Judit Matuz, Lajos Toldy, Laszlo Sebestyen, Zsuzsanna Fittler, Katalin Saghy, Laszlo Szporny, Peter Aranyi
  • Patent number: 4922021
    Abstract: The invention is directed to 1-(2,6-Dimethyl-Phenyl-amino)-2-Dimethyl-amino-Propane and the pharmaceutical composition thereof useful for the treatment of cardiac rhythm disorders.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: May 1, 1990
    Assignee: BASF Aktiensellschaft
    Inventors: Zoltan Zubovics, Lajos Toldy, Gyorgy Rabloczky, Andras Varro, Ferene Andrasi, Sandor Elek, Istvan Elekes
  • Patent number: 4806685
    Abstract: A novel 1,1,2-triphenylpropene derivative, namely: ##STR1## acts on the endocrine system of rats. It exerts oestrogenic or antioestrogenic effects of varying strength in rats, and furthermore inhibits the growth of the mammary tumor induced by 7,12-dimethyl-benz(a)anthracene in rats.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: February 21, 1989
    Assignee: Gyogyszerkutato Inteezet/Pharmaceutical Research Institute
    Inventors: Gizella Abraham, Tibor Horvath, Lajos Toldy, Janos Borvendeg, Endre Csanyi, Eva Kiss, Ilona S. nee Hermann, Kalman Tory
  • Patent number: 4668437
    Abstract: The invention relates to new pregnene derivatives of the general formula (I), ##STR1## wherein R.sup.1 stands for a C.sub.1-4 alkyl group;R.sup.2 stands for a hydrogen atom or a C.sub.2-4 alkanoyl group;R.sup.3 stands for a hydrogen atom, a hydroxyl group or a C.sub.2-4 alkanoyloxy group;A represents a ring of the general formula (1) ##STR2## or a ring of the general formula (2), ##STR3## wherein R.sup.4 means a hydrogen atom or a methyl group;R.sup.5 stands for a hydroxyl group, a C.sub.2-4 alkanoyloxy group or a C.sub.1-3 alkoxy group;R.sup.6 means a hydroxyl group, a C.sub.2-4 alkanoyloxy group, a C.sub.1-3 alkoxy group, an oxo group or a C.sub.2-3 alkylenedithio group;the dotted line optionally represents one or more additional valence bonds, with the proviso that, when the dotted line between C.sub.9 and C.sub.11 represents an additional valence bond, then R.sup.
    Type: Grant
    Filed: September 11, 1985
    Date of Patent: May 26, 1987
    Assignee: Richter Gedeon Vegyeszeti Gyar R.T.
    Inventors: Sandor Solyom, Lajos Toldy, Katalin Szilagyi nee Farago
  • Patent number: 4632928
    Abstract: The invention relates to novel pyrazole derivatives with an ergoline skeleton of the general formula I, ##STR1## wherein x . . . y stands for a ##STR2## R is a hydrogen atom or methyl group, R.sub.1 stands for a hydrogen atom, C.sub.1-4 alkyl, carbethoxy or pyridyl-group,R.sub.2 stands for a hydrogen atom, C.sub.1-4 alkyl, allyl, C.sub.2-4 oxoalkyl-, C.sub.2-4 hydroxyalkyl or C.sub.2-4 hydroxyiminoalkyl group,R.sub.3 stands for a hydrogen atom, C.sub.1-4 alkyl, hydroxy or pyridyl group, furthermoreR.sub.2 and R.sub.3 may stand together for a group of general formula (II), ##STR3## wherein Z stands for a methylene, carbonyl, hydroxymethylene or hydroxyiminomethylene group,R.sub.4 stands for a hydrogen atom or one or two C.sub.1-4 alkyl group(s), andn is 1 or 2,and pharmaceutically acceptable salts thereof.Furthermore the invention relates to a process for the preparation of these compounds.The novel compounds are potent PGF.sub.2.alpha. receptor antagonists.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: December 30, 1986
    Assignee: Richter Gedeon Vegyeszeti Gyar R.T.
    Inventors: Tivadar Rettegi, Erzsebet Mago nee Karacsony, Lajos Toldy, Jozsef Borsy, Ilona Berzetei, Andras Ronai, Aliz Druga, Gyorgy Cseh
  • Patent number: 4579954
    Abstract: The invention relates to the new monohydrate of N-methyl-N'-{2-[(5-methylimidazol-4-yl)-methylthio]-ethyl}-N"-cyanoguanidi ne (cimetidine), a histamine-H.sub.2 receptor antagonist which is called N-methyl-N'-{2-[(5-methylimidazol-4-yl)-methylthio]-ethyl}-N"-cyanoguanidi ne H (cimetidine H) as well as to a process for the preparation of same, which comprises pouring a hot, homogeneous aqueous solution of N-methyl-N'-{2-[(5-methylimidazol-4-yl)-methylthio]-ethyl}-N"-cyanoguanidi ne, optionally containing also methylamine, onto ice and separating the N-methyl-N'-{2-[(5-methylimidazol-4-yl)-methylthio]-ethyl}-N"-cyanoguanidi ne monohydrate.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: April 1, 1986
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Kalman Harsanyi, Gyorgy Domany, Oszkar Fuchs, Lajos Toldy, Gyorgy Fekete, Endre Kasztreiner, Bela Hegedus, Ferenc Morasz, Andras Rado, Tibor Lang, Arpad Lazar, Eva Csongor, Tibor Balogh, Janos Borvendeg, Jozsef Reiter, Tibor Somogyi, Margit Bidlo nee Igloy
  • Patent number: 4537899
    Abstract: The invention relates to acylated 1,2,4-triazole derivatives of general formula I ##STR1## wherein R.sup.1 represents an unsubstituted phenyl group or a phenyl group substituted by one or more halogen atoms, lower alkyl, alkoxy, acyloxy, hydroxy, amino, azido, nitro, trifluoromethyl, lower alkylthio, alkylsulfinyl, or alkylsulfonyl group, andR.sup.2 stands for a C.sub.1-6 alkyl group or a phenyl lower alkyl group which is either unsubstituted or substituted in the aromatic nucleus by a halogen atom or a nitro group,and their pharmaceutically acceptable salts, and a process for preparing them. The new compounds according to the invention exhibit valuable antiviral activity.
    Type: Grant
    Filed: August 25, 1983
    Date of Patent: August 27, 1985
    Assignee: BIOGAL Gyogyszergyar
    Inventors: Istvan Horvath, Tibor Lang, Laszlo Pongo, Jozsef Reiter, Tamas Somorai, Geza Szilagyi, Lajos Toldy
  • 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: 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: 4310549
    Abstract: 1-tert.-butylamino-3-(2,5-dichlorophenoxy)-2-propanol and its pharmaceutically acceptable acid addition salts possess hypotensive and bradycardizing effects. Thus they can be applied in human therapy for the treatment of hypertension and simultaneously also of tachycardia.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: January 12, 1982
    Inventors: Andor Hajos, Marton Fekete, Marianna Kurti, Tibor Lang, Lajos Toldy, Janos Borvendeg, Laszlo Nagy, Sandor Elek, Istvan Elekes, Istvan Polgari
  • Patent number: 4299836
    Abstract: The invention relates to new ergol-8-ene and ergoline derivatives of the general formula /I/ ##STR1## wherein x y stands for --CH.dbd.C.dbd. or --CH.sub.2 --CH.dbd. group,R stands for hydrogen atom or methyl group,R.sub.1 stands for hydrogen or halogen atom,R.sub.2 stands for lower alkylsulfonyloxy group, phenylsulfonyloxy group optionally substituted with a lower alkyl group, or azido group,R.sub.3 stands for lower alkylsulfonyloxy group or phenylsulfonyloxy group optionally substituted with a lower alkyl group, and acid addition salts thereof. These compounds can be prepared from compounds of the general formula II ##STR2## wherein x y and R are as defined above, by reacting at least two equivalents of a lower alkylsulfonic acid chloride or phenylsulfonic acid chloride substituted with lower alkyl group.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: November 10, 1981
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Erzsebet Mago nee Karacsony, Lajos Toldy, Jozsef Borsy, Laszlo Tardos, Ildiko Kiraly, Andras Ronay
  • 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: 4235912
    Abstract: The invention relates to new 8.beta.-hydrazinomethyl-ergoline derivatives of the general formula (I), ##STR1## wherein x y stands for a ##STR2## or ##STR3## group, R stands for hydrogen or methyl group, andR.sub.1 stands for hydrogen, a lower acyl group, a di-(lower-alkylaminocarbonyl group, a group of the general formula (VI), ##STR4## wherein Z.sub.1, Z.sub.2 and Z.sub.3 each represent hydrogen, halogen or a trifluoromethyl group, or a group of the general formula (VII), ##STR5## wherein Y represents a lower alkyl group, allyl group or phenyl group, and acid addition salts thereof. These compounds possess valuable antiserotonine, antidepressant and hypotensive effects, furthermore they can be applied as starting substances in the preparation of other biologically active ergoline derivatives.The new compounds of the general formula (I) are prepared according to the invention by reacting the respective 6-methyl-8.beta.-mesyloxymethyl or -tosyloxymethyl-ergoline derivatives with dry hydrazine.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: November 25, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt
    Inventors: Tivadar Rettegi, Erzsebet Mago nee Karacsony, Lajos Toldy, Jozsef Borsi, Laszlo Tardos
  • 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