Patents by Inventor Egon Kárpáti

Egon Kárpáti 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: 4315011
    Abstract: The invention is directed to 1-alkyl-9-bromohexagydro indoloquinolizium salts and a method for their use to increase blood circulation and decrease in blood vessel resistance.
    Type: Grant
    Filed: July 10, 1979
    Date of Patent: February 9, 1982
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Csaba Szantay, Lajos Szabo, Gyoorgy Kalaus, Lajos Dancsi, Tibor Keve, Egon Karpati, Laszlo Szporny
  • Patent number: 4283401
    Abstract: A novel process for preparing 11-bromo-vincaminic acid esters of the general formula ##STR1## wherein R.sup.1 and R.sup.2 each stand independently from each other for a C.sub.1-6 alkyl group, comprising the steps of treating a 1-alkyl-1-alkoxycarbonylethyl-octahydroindolo-quinolisine of the general formula ##STR2## wherein R.sup.2 is as defined above and R.sup.3 stands for a C.sub.1-6 alkyl group, with a brominating agent and treating the resulting isomeric mixture of the bromo-derivatives with an alkaline agent or treating the corresponding 14-oxo-E-homo-eburnane being unsubstituted in ring A with a brominating agent and nitrosating the resulting 11-bromo-14-oxo-E-homo-eburnane of the general formula ##STR3## wherein R.sup.2 is as defined above, then subjecting the resulting 11-bromo-14-oxo-15-hydroxyimino-E-homoeburnanes to deoxyimination and treating the 14,15-dioxo-derivatives obtained with a base in an alcohol of the general formula R.sup.1 OH, wherein R.sup.1 is as defined above.
    Type: Grant
    Filed: July 11, 1979
    Date of Patent: August 11, 1981
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Csaba Szantay, Lajos Szabo, Gyorgy Kalaus, Lajos Dancsi, Tibor Keve, Egon Karpati, Laszlo Szporny
  • Patent number: 4278682
    Abstract: Vasodilating octahydro-indolo[2,3-a]quinolizine derivatives of the formula ##STR1## wherein Q is hydrogen or an A--CH.sub.2 --CH.sub.2 -- group and A is cyano or --COOR, wherein R is C.sub.1-6 alkyl.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: July 14, 1981
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Csaba Szantay, Lajos Szabo, Gyorgy Kalaus, Egon Karpati, Laszlo Szporny
  • Patent number: 4250310
    Abstract: Piperazine derivatives having the formula (I) ##STR1## wherein R.sub.1 is C.sub.1-5 alkyl group which can have a phenyl, trimethoxyphenyl, phenoxy, methoxy-cyclohexyl or heptamethyleneimino substituent on the terminal carbon atom, allyl, phenyl which can have one or more halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, trihalomethyl or allyl substituents, or C.sub.2-5 alkoxycarbonyl;R.sub.2 is hydrogen or C.sub.1-4 alkyl; andR.sub.3 is furyl or a C.sub.5-6 cycloalkyl having a C.sub.1-4 alkoxy substituent, and acid addition salts or quaternary salts thereof with anti-arrhythmic and coronary dilatating pharmaceutical effects.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: February 10, 1981
    Assignee: Richter Gedeon Vegyeszeti Gyar R.T.
    Inventors: Karoly Felfoldi, Jozsef Apjok, Mihaly Bartok, Jozsef Czombos, Arpad Molnar, Ferenc Noteisz, Egon Karpati, Laszlo Szporny
  • Patent number: 4209442
    Abstract: Novel Angiotensin II peptides of the formula:X-Arg-Val-Tyr-Ile-His-Pio-Ywhere X is hydroxyacetyl or .alpha.-hydroxypropyl and Y is leucyl, isoleucyl, alanyl or threonyl or an acid addition salt or a complex thereof are disclosed and a process for the preparation thereof are disclosed having the ability to lower renal hypertension.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: June 24, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Lajos Kisfaludy, Gyorgyne Nyeki nee Olga Kuprina, Laszlone Szirmai nee Maria Sarkozi, Egon Karpati, Katalin Gidai, Laszlo Szporny
  • Patent number: 4200636
    Abstract: The invention relates to new 3-amino-17a-aza-D-homo-5.alpha.-androstane derivatives of the general formula I ##STR1## wherein R.sub.1 represents a methylene or an >N--CH.sub.3 group, and n stands for 1 or 2, and the acid addition salts and the quaternary salts of the general formula ##STR2## thereof, wherein R.sub.2 stands for an alkyl or alkenyl group having from 1 to 4 carbon atoms, and A represents a halogen atom, provided that if R.sub.1 stands for an >N--CH.sub.3 group, R.sub.2 is attached to the nitrogen of that >N--CH.sub.3 group. The new compound possess a non-polarizing neuromuscular blocking activity and have a short activity period.
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: April 29, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Zoltan Tuba, Maria Marsai, Sandor Gorog, Katalin Biro, Egon Karpati, Laszlo Szporny
  • Patent number: 4200631
    Abstract: Ulcer production in animals is prevented during prolonged antiphlogistic treatment with ulcerogenic quantities of indomethacin by using it in a composition of 1 part of indomethacin to 7.5 to 25 parts, preferably 10 parts by weight of a salicylate. Indomethacin is the most potent ulcerating compound among approved non-steroid antiinflammatory agents.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: April 29, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Elemer Ezer, Laszlo Szporny, Lilla Forgach, Eva Palosi, Eszter Cholnoky, Egon Karpati, Gyorgy Hajos, Gyozo Hortobagyi, Katalin Gidai
  • Patent number: 4200650
    Abstract: New 2-amino-cyclopent-1-ene-thiocarboxylic acid-disulfides of the general formula (I), ##STR1## wherein R is hydrogen, a C.sub.1-6 alkyl group having optionally a C.sub.1-4 alkoxy, hydroxy, carboxy and/or amino substituent, a C.sub.2-4 alkenyl group, a C.sub.3-8 cycloalkyl group or phenyl group, are prepared by oxidizing the respective 2-amino-cyclopent-1-ene-dithiocarboxylic acids of the general formula (II), ##STR2## wherein R is as defined above. The new compounds of the general formula (I) and their salts exert dopamine-.beta.-hydroxylase inhibiting effects and can be applied in the therapy.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: April 29, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Gyorgy Matolcsy, Piroska Bartok nee Berencsy, Bela Kiss, Eva Palosi, Egon Karpati, Laszlo Szporny
  • Patent number: 4199598
    Abstract: A method of treating mammalian noradrenaline malfunctions or dysfunction or effecting dopamine-.beta.-hydroxylase inhibition comprises administering an effective dose of an acid derivative of the formula (I), ##STR1## wherein R is C.sub.2-4 alkenyl, C.sub.3-8 cycloalkyl, benzyl or C.sub.1-6 alkyl which has a C.sub.1-4 alkoxy or a hydroxy substituent, or C.sub.2-6 alkyl with a carboxy and/or amino substituent, or C.sub.5 - or C.sub.6 -unsubtituted alkyl.
    Type: Grant
    Filed: April 12, 1979
    Date of Patent: April 22, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Gyorgy Matolcsy, Piroska Bartok nee Berencsy, Bela Kiss, Eva Palosi, Egon Karpati, Laszlo Szporny
  • Patent number: 4198402
    Abstract: Ulcer production in animals is prevented during prolonged antiphlogistic treatment with ulcerogenic quantities of phenylbutazone by using it in a composition of 1 part of antiphlogistic to 0.2 to 50 parts by weight of alkali metal salicylate.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: April 15, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Elemer Ezer, Laszio Szporny, Lilla Forgach, Eva Palosi, Eszter Cholnoky, Egon Karpati, Gyorgy Hajos, Gyozo Hortobagyi, Katalin Gidai
  • Patent number: 4196206
    Abstract: 3-[4-(2'-Pyridyl)-piperazin-1-yl]-1-(3,4,5-trimethoxybenzoyloxy)-propane or a pharmaceutically acceptable acid-addition salt thereof in a composition with anti-arrhythmic activity.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: April 1, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Arpad Molnar, Karoly Felfoldi, Mihaly Bartok, Egon Karpati, Laszlo Szporny
  • Patent number: 4184040
    Abstract: New hydroxymethyl-pyridine esters of the formula (I) ##STR1## wherein R represents a 9-xanthenyl group or a phenyl group substituted by a halogen atom or a trifluoromethyl group or by an alkyl or alkoxy group, either having 1 to 4 carbon atoms, and pharmaceutically acceptable acid addition salts and quaternary salts thereof are prepared by acylating the corresponding hydroxymethyl pyridines with a carboxylic acid of the formula R--COOH, or with a reactive derivative thereof, and, if desired, converting the obtained product of the formula I into a pharmaceutically acceptable acid addition salt or quaternary salt thereof. The new compounds exert beneficial effects on functional disorders of the heart.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: January 15, 1980
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Ferenc Noteisz, Mihaly Bartok, Karoly Felfoldi, Egon Karpati, Laszlo Szporny
  • Patent number: 4179433
    Abstract: Angiotensin II analog of the formula IX-Arg-Val-Tyr-Ile-His-Pro-Y (I)whereinX is a radical derived from an aliphatic .alpha.-aminooxy-carboxylic acid andY is a radical derived from an aliphatic .alpha.-amino-carboxylic acid,and acid addition salts and complexes thereof with antagonistic properties useful in the diagnosis and treatment of hypertensions depending on renin.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: December 18, 1979
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Lajos Kisfaludy, Olga Nyeki nee Kuprina, Maria Skirmai nee Sarkozi, Egon Karpati, Katalin Gidai, Laszlo Szporny
  • Patent number: 4179463
    Abstract: 2-Amino-cyclopent-1-ene-1-dithiocarboxylic acid derivatives of the formula, ##STR1## wherein R is C.sub.2-4 alkenyl, or C.sub.1-6 alkyl group having optionally a C.sub.1-4 alkoxy, hydroxy, carboxy and/or amino substituent, with the proviso that if R is an unsubstituted alkyl group, this group contains at least 5 carbon atoms, are prepared by reacting 2-amino-cyclopent-1-ene-1-dithiocarboxylic acid or a salt thereof with an amine of the formula,R--NH.sub.2 (II)wherein R is as defined above. The new compounds of the invention exert dopamine-.beta.-hydroxylase inhibiting effects.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: December 18, 1979
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Gyorgy Matolcsy, Piroska Bartok, nee Berencsy, Bella Kiss, Eva Palosi, Egon Karpati, Laszlo Szporny
  • Patent number: 4179467
    Abstract: New 2-amino-cyclopent-1-ene-thiocarboxylic acid-disulfides of the formula, ##STR1## wherein R is a C.sub.1-6 alkyl group having optionally a C.sub.1-4 alkoxy, hydroxy, carboxy and/or amino substituent, a C.sub.2-4 alkenyl group, or a C.sub.3-8 cycloalkyl group, are prepared by oxidizing the respective 2-amino-cyclopent-1-ene-dithiocarboxylic acids of the formula, ##STR2## wherein R is as defined above. The compounds of the formula (I) exert dopamine-.beta.-hydroxylase inhibiting effects and can be applied in therapy.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: December 18, 1979
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Gyorgy Matolcsy, Piroska Bartok nee Berencsy, Bella Kiss, Eva Palosi, Egon Karpati, Laszlo Szporny
  • Patent number: 4177190
    Abstract: Curare-type salts of the formula ##STR1## wherein Ac is an alkyl carbonyl group containing 1 to 4 carbon atoms in the alkyl moiety and one ofR.sub.1 and R.sub.2, is a methylene group and the other is a group of the formula >N--R.sub.2 wherein R.sub.2 is an alkyl group containing 1 to 3 carbon atoms,A is halogen andR.sub.3 is an alkyl group containing 1 to 4 carbon atoms, or an alkyl group; anda process for the preparation thereof are disclosed.
    Type: Grant
    Filed: March 14, 1978
    Date of Patent: December 4, 1979
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Zoltan Tuba, Maria Marsai, Katalin Biro, Laszlo Szporny, Egon Karpati, Szabolcs Szeberenyi
  • Patent number: 4173642
    Abstract: New pharmacologically active octahydro-indolo[2,3-a]quinolizine derivatives of the formula ##STR1## wherein Q is hydrogen or an A--CH.sub.2 --CH.sub.2 -- group and A is cyano or -COOR, wherein R is C.sub.1-6 alkyl are prepared by reacting 2,3,4,6,7,12-hexahydro-indolo[2,3-a]quinolizine with a compound of the formula CH.sub.2 .dbd.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: November 6, 1979
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt
    Inventors: Csaba Szantay, Lajos Szabo, Gyorgy Kalaus, Egon Karpati, Laszlo Szporny
  • Patent number: 4163851
    Abstract: The new compound vincane of the formula ##STR1## is prepared by the reduction or reductive dehydratation, respectively, a compound of the formula ##STR2## wherein A.about.B represents the group --CH.dbd.CH-- or ##STR3## i.e. of vincamenine or of vincanol.
    Type: Grant
    Filed: July 6, 1977
    Date of Patent: August 7, 1979
    Assignee: Richter Gedeon Vegyeszeti Gyar RT
    Inventors: Otto Clauder, Arpad Kiraly, Jozsef Kokosi, Egon Karpati, Laszlo Szporny
  • Patent number: 4140790
    Abstract: The invention relates to novel piperazine derivatives having the formula (I), ##STR1## wherein R.sub.1 represents a C.sub.1-5 alkyl group having optionally a phenyl, trimethoxyphenyl, phenoxy, methoxy-cyclohexyl or heptamethyleneimino substituent on the terminal carbon atom, allyl group, a phenyl group having optionally one or more halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, trihalomethyl or allyl substituent(s), or a C.sub.2-5 alkoxycarbonyl group,R.sub.2 represents hydrogen or a C.sub.1-4 alkyl group, andR.sub.3 represents furyl group, 9-xanthenyl group or a C.sub.5-6 cycloalkyl group having a C.sub.1-4 alkoxy substituent,Or acid addition salts or quaternary salts thereof.The invention also relates to pharmaceutical compositions containing the above compounds, furthermore to a process for the preparation of the novel compounds and pharmaceutical compositions.The novel compounds according to the invention possess anti-arrhythmic and coronary dilatating effects.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: February 20, 1979
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Karoly Felfoldi, Jozsef Apjok, Mihaly Bartok, Jozsef Czombos, Arpad Molnar, Ferenc Noteisz, Egon Karpati, Laszlo Szporny
  • Patent number: 4120858
    Abstract: A compound of the formula (I) ##STR1## wherein X stands for a hydrogen atom, an optionally substituted aliphatic or aromatic sulfonyloxy group, a thiocyanato group, an azido group or an amino group optionally mono- or disubstituted by aliphatic, cycloaliphatic, aromatic or araliphatic hydrocarbon groups, acyl, alkyloxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, aralkyloxycarbonyl, aminocarboimido groups or the substituents of the said amino group may form with the nitrogen atom thereof a five-, six- or seven-membered saturated or unsaturated heterocyclic ring optionally containing a further nitrogen, oxygen or sulfur hetero atom, and a quaternary salt or acid addition salt thereof. The compounds are useful in the treatment of arteriosclerosis and high blood pressure.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: October 17, 1978
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Otto Clauder, Jozsef Kokosi, Laszlo Szporny, Egon Karpati