Patents by Inventor Lujza Petocz

Lujza Petocz 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: 5652270
    Abstract: The invention refers to a pharmaceutical composition, a process for the preparation thereof and a novel medical use of bicycloheptane derivatives. The pharmaceutical compositions of the invention comprise a bicycloheptane derivative of the formula I ##STR1## wherein said derivative is as defined in the specification herein. The pharmaceutical compositions of the invention are suitable for the treatment of diseases and disorders that are connected with the influence on the cholecystokinin system, especially for preventing the spastic contraction of the gallbladder.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: July 29, 1997
    Assignee: Egis Gyogyszergyar RT
    Inventors: Zoltan Budai, Istvan Gacsalyi, Gabor Szenasi, Tibor Mezei, Aniko Kovacs, Gabor Blasko, Katalin Szemeredi, Gyula Simig, Lujza Petocz, Klara Reiter nee Esses
  • Patent number: 5276030
    Abstract: The invention relates to novel triazolyl thioamides of the general formula (I), ##STR1## wherein Q represents hydrogen or a heterocyclic group optionally bearing one or more C.sub.1-4 alkyl substituent(s), or a group of the formula SR.sup.1, whereinR.sup.1 stands for straight or branched chained alkyl group comprising 1 to 6 carbon atom(s), or a group of the formula NR.sup.2 R.sup.3, whereinR.sup.2 and R.sup.3 each represent hydrogen, straight or branched chained C.sub.1-4 alkyl or C.sub.2-6 alkenyl group,Y denotes C.sub.1-4 alkyl bearing one or more hydroxyl or C.sub.1-4 alkoxy substituent(s), phenyl-(C.sub.1-4 alkyl) optionally bearing on the phenyl ring one or more C.sub.1-4 alkoxy group(s), or phenoxy-(C.sub.1-4 alkyl) optionally substituted on the phenyl ring by a C.sub.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: January 4, 1994
    Assignee: Egis Gyogyszergyat
    Inventors: Josef Barkoczy, Josef Reiter, Laszlo Pongo, Lujza Petocz, Marton Fekete, Frigyes Gorgenyi, Gabor Gigler, Istvan Gacsalyi, Istvan Gyertyan
  • Patent number: 5240918
    Abstract: The invention relates to new 2-(substituted imino)-thiazolidines, a process for the preparation thereof, pharmaceutical compositions comprising the same, the use of the said 2-(substituted imino)thiazolidines for the treatment of diseases and for the preparation of pharmaceutical compositions suitable for the treatment of diseases.The new 2-(substituted imino)-thiazolidine derivatives provided by the present invention correspond to the general formula (I), ##STR1## wherein R.sup.1 and R.sup.2 each represent halogen, nitro, C.sub.1-4 alkoxy or C.sub.1-4 alkyl, which latter may optionally carry one or more halogen substituent(s),R.sup.3 and R.sup.4 each represent hydrogen or C.sub.1-4 alkyl,Z denotes oxygen, sulfur or imino, which latter is substituted by a C.sub.1-6 alkyl or a C.sub.1-6 alkenyl group,R.sup.5 stands for hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkylthio or a group or the formula --NH--R, wherein R represents C.sub.1-6 alkyl, aryl, aralkyl or C.sub.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: August 31, 1993
    Assignee: EGIS Gyogyszergyar
    Inventors: Karoly Lempert, Gyula Hornyak, Jozsef Fetter, Antal Feller, Klara Gaso, Gabor Gigler, Laszlo Kapolnai, Lujza Petocz, Katalin Szemeredi, Marton Fekete
  • Patent number: 5234934
    Abstract: The invention relates to novel racemic or optically active aminopropanol derivatives of formula I ##STR1## wherein R and R.sup.1 are independently hydrogen atom, halogen atom, lower alkoxy, or together represent a methylene dioxy group,R.sup.2 and R.sup.3 together represent a chemical bond or independently stand for a hydrogen atom,R.sup.4 and R.sup.5 are independently hydrogen atom, C.sub.3-7 cycloalkyl group or straight or branched, saturated or unsaturated C.sub.1-12 alkyl group optionally substituted by one or more dialkyl-aminoalkyl, dimethoxyphenyl or phenyl groups, orR.sup.4 and R.sup.5 together with the adjacent nitrogen atom form a 4 to 7 membered ring optionally comprising an oxygen, sulfur or a further nitrogen atom, which ring is optionally substituted by a phenyl, benzyl or C.sub.1-3 alkyl group and the said substituents may carry a hydroxyl group, one or two methoxy groups, halogen atoms or trifluoromethyl groups, orR.sup.4 and R.sup.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: August 10, 1993
    Assignee: Egis Gyogyszergyar
    Inventors: Zoltan Budai, Klara Reiter nee Esses, Eniko Sziri nee Kiszelly, Gizella Zsila, Gabor Gigler, Lujza Petocz, Maria Szecsey nee Hegedus, Marton Fekete, Valeria Hoffmann, Laszlo Kapolnai
  • Patent number: 5225410
    Abstract: This invention relates to novel triazolyl hydrazide derivatives and a process for the preparation thereof.The new triazolyl hydrazide derivatives of the general formula (I). ##STR1## wherein Q represents hydrogen or a heterocyclic group optionally substituted by a C.sub.1-4 alkyl group; or a group of general formula SR.sup.1, whereinR.sup.1 stands for C.sub.1-4 alkyl or phenyl-(C.sub.1-4 alkyl) optionally substituted by halogen, C.sub.1-4 alkyl or nitro substitute therefor substituents; or Q represents a group of the formula NR.sup.2 R.sup.3, wherein R.sup.2 and R.sup.3 each represents hydrogen, straight or branched chain C.sub.1-6 alkyl or C.sub.2-6 alkenyl;Z represents hydrogen or a group of the formula (C.dbd.X)--(N--R.sup.4)--NR.sup.5 R.sup.6, whereinX stands for oxygen or sulfur,R.sup.4, R.sup.5 and R.sup.6 each stand for hydrogen or C.sub.1-4 alkyl;R.sup.7 stands for hydrogen, C.sub.1-4 alkyl or phenyl-(C.sub.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: July 6, 1993
    Assignee: Egis Gyogyszergyar
    Inventors: Jozsef Barkoczy, Jozsef Reiter, Laszlo Pongo, Lujza Petocz, Frigyes Gorgenyi, Marton Fekete, Eniko Szirt nee Kiszelly, Maria Szecsey nee Hegedus, Istvan Gacsalyi, Istvan Gyertyan
  • Patent number: 5175163
    Abstract: The invention relates to novel triazolyl thioamides of the general formula (I), ##STR1## wherein Q represents hydrogen or a heterocyclic group optionally bearing one or more C.sub.1-4 alkyl substituent(s), or a group of the formula SR.sup.1, whereinR.sup.1 stands for straight or branched chained alkyl group comprising 1 to 6 carbon atom(s), or a group of the formula NR.sup.2 R.sup.3, whereinR.sup.2 and R.sup.3 each represent hydrogen, straight or branched chained C.sub.1-4 alkyl or C.sub.2-6 alkenyl group,Y denotes C.sub.1-4 alkyl optionally bearing one or more hydroxyl or C.sub.1-4 alkoxy substituent(s), phenyl-(C.sub.1-4 alkyl) optionally bearing on the phenyl ring one or more C.sub.1-4 alkoxy group(s), or phenoxy-(C.sub.1-4 alkyl) optionally substituted on the phenyl ring by a C.sub.1-4 alkyl bearing a heterocyclic group containing a nitrogen atom,and pharmaceutically acceptable acid addition salts thereof.Furthermore the invention relates to a process for preparing these compounds.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: December 29, 1992
    Assignee: Egis Gyogyszergyar
    Inventors: Jozsef Barkoczy, Jozsef Reiter, Laszlo Pongo, Lujza Petocz, Marton Fekete, Frigyes Gorgenyi, Gabor Gigler, Istvan Gacsalyi, Istvan Gyertyan
  • Patent number: 5135928
    Abstract: This invention relates to novel triazolo derivatives, a process for the preparation thereof, pharmaceutical compositions comprising the same, to the use of the said triazolo derivatives for the treatment of diseases and also for the preparation of pharmaceutical compositions suitable for the treatment of the said diseases.The new triazolo derivatives of the general formulae (Ia) and (Ib), ##STR1## wherein Q represents hydrogen or a heterocyclic group optionally bearing one or more C.sub.1-4 alkyl substituent(s); or a group of the formula SR.sup.1, whereinR.sup.1 stands for straight or branched chained C.sub.1-4 alkyl or phenyl-(C.sub.1-4 alkyl); or q represents a group of the formula NR.sup.2 R.sup.3, whereinR.sup.2 and R.sup.3 each represent hydrogen, straight or branched chain C.sub.1-12 alkyl, C.sub.2-6 alkenyl or phenyl-(C.sub.1-4 alkyl);R.sup.4 and R.sup.7 each represent hydrogen, C.sub.1-6 alkyl or phenyl-(C.sub.1-4 alkyl) optionally bearing one or more halogen substituent(s);R.sup.5 and R.sup.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: August 4, 1992
    Assignee: Egis Gyogyszergyar
    Inventors: Jozsef Reiter, Jozsef Barkoczy, Lujza Petocz, Frigyes Gorgenyi, Marton Fekete, Eniko Szirt nee Kiszelly, Gabor Gigler, Istvan Gacsalyi, Istvan Gyertyan, Klara Reiter nee Esses
  • Patent number: 5130487
    Abstract: The invention relates to novel racemic or optically active aminopropanol derivatives of formula I ##STR1## wherein R and R.sup.1 are independently hydrogen atom, halogen atom, lower alkoxy, or together represent a methylene dioxy group,R.sup.2 and R.sup.3 together represent a chemical bond or independently stand for a hydrogen atom,R.sup.4 and R.sup.5 are independently hydrogen atom, C.sub.3-7 cycloalkyl group or straight or branched, saturated or unsaturated C.sub.1-12 alkyl group optionally substituted by one or more dialkylaminoalkyl, dimethoxyphenyl or phenyl groups, orR.sup.4 and R.sup.5 together with the adjacent nitrogen atom form a 4 to 7 membered ring optionally comprising an oxygen, sulfur or a further nitrogen atom, which ring is optionally substituted by a phenyl, benzyl or C.sub.1-3 alkyl group and the said substituents may carry a hydroxyl group, one or two methoxy groups, halogen atoms or trifluoromethyl groups, orR.sup.4 and R.sup.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: July 14, 1992
    Assignee: EGIS Gyogyszergyar
    Inventors: Zoltan Budai, Tibor Mezei, Klara Reiter nee Esses, Eniko Sziri neKiszelly, Gizella Zsila, Gabor Gigler, Lujza Petocz, Maria Szecsey nee Hegedus, Marton Fekete, Valeria Hoffmann, Laszlo Kapolnai
  • Patent number: 5071849
    Abstract: The invention relates to new dihydropyrimidothiazine derivatives, a process for the preparation thereof, pharmaceutical compositions comprising the same and new intermediates useful in the preparation of the said dihydropyrimidothiazine derivatives.The new dihydropyrimidothiazine derivatives of the general formula I, ##STR1## wherein R.sup.1 represents C.sub.1-6 alkoxy, amino or phenylamino,R.sup.2 stands for C.sub.1-6 alkyl or phenyl,R.sup.3 represents hydrogen or C.sub.1-6 alkyl, andR.sup.4 denotes C.sub.1-11 alkyl or phenyl optionally bearing one or more identical or different substituent/s/ selected from halogen, nitro, amino, di-(C.sub.1-6 alkyl)-amino, C.sub.1-6 alkyl, C.sub.1-6 alkoxy and hydroxy,and pharmaceutically acceptable acid addition salts thereof exert valuable antianginal and/or antiinflammatory effect/s/ and are useful in therapy.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: December 10, 1991
    Assignee: Egis Gyogyszergyar
    Inventors: Daniel Bozsing, Lujza Petocz, Maria Szecsey nee Hegedus, Peter Tompe, Gabor Gigler, Istvan Gacsalyi, Istvan Gyertyan
  • Patent number: 5064826
    Abstract: This invention relates to novel triazolopyrimidine derivatives of formulae (Ia) and (Ib), ##STR1## wherein Q represents hydrogen, a heterocyclic group optionally substituted by a C.sub.1-4 alkyl group and containing one or more oxygen and/or nitrogen atoms or a group of formula--SR.sup.1 wherein R.sup.1 is alkyl or aralkyl, or a group of formula--NR.sup.2 R.sup.3 wherein R.sup.2 and R.sup.3 are independently hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, aryl or a heterocyclic group,m and n are independently 0, 1, 2, 3 or 4, with the provision that if m stands for 0, then n is different from 0, and if both n and m are 1 or m stands for 0 and n is 2, the Q is different from methylthio or morpholino group, their mixtures or pharmaceutically acceptable salts. Furthermore, the invention relates to a process for preparing these compounds.The compounds of formulae (Ia) and (Ib) are able to inhibit the ptosis caused by tetrabenazine and they have analgetic activity.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: November 12, 1991
    Inventors: Klara Reiter nee Esses, Jozsef Reiter, Zoltan Budai, Endre Rivo, Peter Trinka, Lujza Petocz, Gabor Gigler, Istvan Gyertyan, Istvan Gacsalyi
  • Patent number: 4994448
    Abstract: The new compounds of the general Formula I ##STR1## (wherein R.sub.1 stands for C.sub.1-4 alkyl or aralkyl; andR.sub.2 represents hydroxy; orR.sub.1 and R.sub.2 together form a valency bond;R.sub.3 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl, amino, alkylthio or a group of the Formula --NR.sub.7 R.sub.8 in which R.sub.7 and R.sub.8 may be the same or different and stand for hydrogen, C.sub.1-4 alkyl, phenyl-C.sub.1-4 alkyl, hydroxy-C.sub.1-4 alkyl or di-(C.sub.1-4 alkyl)-amino-C.sub.1-4 alkyl or together with the nitrogen atom they are attached to form a 6-membered heterocyclic ring which may optionally contain a further nitrogen, oxygen or sulfur atom; orR.sub.2 and R.sub.3 together form an oxo (.dbd.O) or thixo (.dbd.S) group;R.sub.4 represents hydrogen, C.sub.1-4 alkyl or phenyl which may optionally bear one or two halogen or nitro substituent(s);Z is a group of the Formula (a) or (b) ##STR2## A.sup.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: February 19, 1991
    Assignee: Egis Gyogyszergyar
    Inventors: Andras Messmer, Gyorgy Hajos, Zsuzsa Juhasz nee Riedl, Pal Benko, Laszlo Pallos, Lujza Petocz, Eniko Szirt nee Kiszelly, Gabor Gigler, Istvan Gyertyan, Maria Hegedus
  • Patent number: 4965259
    Abstract: Dioxazocine derivatives, their preparation and composition containing them, said derivatives being represented by the formula I ##STR1## wherein R.sub.1 represents hydrogen or alkyl having from 1 to 4 carbon atoms,R.sub.2 represents alkyl having from 1 to 4 carbon atoms, andn is equal to 0 or 1,and pharmaceutically acceptable acid addition salts thereof formed with an inorganic or organic acid.Two different reactions are described for making these compounds. They can be formulated into pharmaceutical compositions in the usual manner and exhibit central nervous system affecting activities.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: October 23, 1990
    Assignee: EGIS Gyogyszergyar
    Inventors: Laszlo Rozsa, Lujza Petocz, Eniko Szirt nee Kiszelly, Marton Fekete, Maria Szecsey nee Hegedus, Gabor Gigler, Istvan Gacsalyi
  • Patent number: 4939142
    Abstract: The new compounds of the general Formula I ##STR1## (wherein A stands for a C.sub.2-4 straight or branched chain alkylene group;R.sup.1 and R.sup.2 may be same or different and each stands for hydrogen, halogen, lower alkyl or lower alkoxy; orR.sup.1 and R.sup.2 together form a methylenedioxy group;R.sup.3 and R.sup.4 may be the same or different and each stands for C.sub.1.ident. alkyl or C.sub.3.notident. cycloalkyl orR.sup.3 and R.sup.4 together with the nitrogen atom, they are attached to, form a 4-7 membered ring which may contain as additional ring member an oxygen or sulfur atom or a further nitrogen atom and the latter nitrogen atom may optionally bear a C.sub.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: July 3, 1990
    Assignee: EGIS Gyogyszergyar
    Inventors: Zoltan Budai, Lujza Petocz, Tibor Mezei, Eniko Szirt nee Kiszelly, Maria Szecsey nee Hegedus, Gabor Gigler, Klara Reiter nee Esses, Aranka Lay nee Konya, Eva Furdyga, Istvan Gertyan, Istvan Gacsalyi
  • Patent number: 4921960
    Abstract: The new compounds of the general Formula I ##STR1## (wherein R.sub.1 stands for C.sub.1-5 alkyl, C.sub.2-5 alkenyl, C.sub.2-5 alkinyl, C.sub.3-7 cycloalkyl or optionally substituted phenyl-(C.sub.1-4 alkyl);R.sub.2 represents hydrogen or C.sub.1-5 alkanoyl;X.sub.1 and X.sub.2 can be identical or different and each stands for hydrogen, halogen, trifluoromethyl or C.sub.1-4 alkoxy;(with the proviso that if R.sub.1 stands for ethyl, at least one of R.sub.2, X.sub.1 and X.sub.2 is different from hydrogen) and pharmaceutically acceptable acid additions salts possess valuable anxiolytic properties devoid of sedative effect and can be used in therapy.The compounds of the general Formula I can be prepared by methods known per se.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: May 1, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Jozsef Knoll, Katalin Budai nee Simonyi, Edit Berenyi nee Poldermann, Ildiko Miklya, Marton Fekete, Gabriella Zsilla, Berta Knoll, Attila Mandi, Lujza Petocz, Istvan Gyertyan, Istvan Gacsalyi
  • Patent number: 4921861
    Abstract: The 3-amino-4-ethylthio-quinoline of the Formula I ##STR1## and pharmaceutically acceptable acid addition salts thereof possess useful therapeutical properties. They exhibit a potent and highly selective anxiolytic and narcosis potentiating effect and are devoid of sedative and anti-convulsive effect. Consequently, the invention relates to pharmaceutical compositions comprising the compound of Formula I or a salt thereof as active agent.The invention also relates to a new and improved process for the preparation of the compound of Formula I.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: May 1, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Jozsef Knoll, ne Simonyi Budai, Edit Berenyi ne Poldermann, Ildiko Miklya, Marton Fekete, Gabriella Zsilla, Berta Knoll, Attila Mandi, Lujza Petocz, Istvan Gyertyan, Istvan Gacsalyi
  • Patent number: 4906622
    Abstract: The invention relates to optically active 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]dioxaz ocine of the Formula ##STR1## and pharmaceutically acceptable acid additional salts thereof. The enantiomers are especially active against Parkinsion's disease.The optically active enantiomers are prepared by(a) resolving the racemic 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]-dioxa zocine with a optically active organic acid and separating the enantiomers; or(b) dissolving the racemic 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]-dioxa zocine in an organic solvent, crystallizing and isolating one of the enantiomers, optionally dissolving additional racemic 2-chloro-12-(3-dimethylamino-2-methylpropyl)-12H-dibenzo[d,g][1,3,6]-dioxa zocine in the mother liquor obtained and crystallizing and isolating the other enantiomer, and, if desired, repeating the whole process.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: March 6, 1990
    Assignee: Egis Gyogyszergyar
    Inventors: Laszlo Rozsa, Lujza Petocz, Eniko Szirt nee Kiszelly, Peter Tompe, Gabor Gigler
  • Patent number: 4904669
    Abstract: The invention relates to new thiazolo[4,5-c]quinoline derivatives of the general Formula I ##STR1## and acid addition salts thereof, a process for the preparation of the same and pharmaceutical compositions comprising the said compounds.The substituent definition of the general Formula I is as follows:R stands for hydrogen; a straight or branched chained alkyl group having 2-5 carbon atoms optionally substituted by one or more halogen atom(s); phenyl or phenyl-(lower alkyl) optionally bearing one or more substituent(s) on the phenyl ring;R.sup.1 and R.sup.2 are identical or different and stand for hydrogen, halogen or lower alkyl).The compounds of the general Formula I possess valuable central nervous depressive properties.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: February 27, 1990
    Assignee: EGIS Gyogyszergyar
    Inventors: Jozsef Knoll, Edit Berenyi nee Poldermann, Katain Budainee Simonyi, Berta Knoll, Zsuzsa Furts, Julia Timar, Gabriella Zsila, Ildiko Niklya, Lujza Petocz, Attila Mandi
  • Patent number: 4883798
    Abstract: The compounds of the general Formula I ##STR1## (wherein R.sup.1 and R.sup.2 may be the same or different and each stands for hydrogen, hydroxy, C.sub.1-6 alkoxy, C.sub.1-6 alkoxy-C.sub.1-6 alkoxy, C.sub.2-6 alkenyloxy or phenyl-(C.sub.1-3 alkoxy), or R.sup.1 and R.sup.2 together form C.sub.1-2 alkylenedioxy; with the proviso that at least one of symbols R.sup.1 and R.sup.2 is other than hydrogen and with the further proviso that R.sup.1 and R.sup.2 can not represent 3,4-dimethoxy substitution) andtheir pharmaceutically acceptable acid addition salts exhibit useful analgesic, antipyretic, anti-inflammatory, anti-anginal and antioxidant effect.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: November 28, 1989
    Assignee: EGIS Gyogyszergyar
    Inventors: Lujza Petocz, Istvan Simonyi, Ivan Beck, Gabor Gigler, Marton Fekete, Eniko Szirt nee Kiszelly, Attila Mandi, Frigyes Gorgenyi, Andras Dietz, Elemer Jakfalvi, Katalin Zukovics nee Sumeg, Klara Gado, Maria Hegedus
  • Patent number: 4873249
    Abstract: The invention relates to pharmaceutical compositions having analgesic and/or anti-inflammatory effect comprising as active ingredient 2,4-diamino-5-(3,4-dimethoxy-benzyl)-pyrimidine or a pharmaceutically acceptable acid addition salt thereof.The pharmaceutical compositions of the present invention exhibit the desired analgesic and anti-inflammatory effect without causing undesired ulcerogenic side-effects.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: October 10, 1989
    Assignee: EGIS Gyogyszergyar
    Inventors: Lujza Petocz, Istvan Simonyi, Ivan Beck, Gabor Gigler, Marton Fekete, Eniko Kiszelly, Attila Mandi, Frigyes Gorgenyi, Andras Dietz, Katalin Sumeg nee Zukovics, Elemer Jakfalvi
  • Patent number: 4871846
    Abstract: A process for the preparation of condensed as-triazinium derivatives of the formula I ##STR1## and isomers thereof, wherein R.sub.1 inter alia is an alkyl group, R.sub.2 inter alia is hydrogen or an alkyl group and R.sub.3 is hydrogen and where Z is a group of the formula a or b ##STR2## which comprises reacting a compound of the formula II ##STR3## where Y is a group of the formula c or d ##STR4## with a compound of the formula IIaNH.sub.2 --CO--R.sub.2 (IIa)in the presence of a dehydrating agent. The advantage of the process is that it consists of fewer reaction steps and provides higher yields than the known methods. The compounds of formula I are pharmaceutically active known derivatives.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: October 3, 1989
    Assignee: EGIS Gyogyszergyar
    Inventors: Sandor Batori, Gyorgy Hajos, Andras Messmer, Pal Benko, Laszlo Pallos, Lujza Petocz, Katalin Grasser, Ibolya Kosoczky, Eniko Szirt nee Kiszelly