Patents by Inventor Andras Messmer
Andras Messmer 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: 4994448Abstract: 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: GrantFiled: September 30, 1988Date of Patent: February 19, 1991Assignee: Egis GyogyszergyarInventors: 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: 4871846Abstract: 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: GrantFiled: April 28, 1987Date of Patent: October 3, 1989Assignee: EGIS GyogyszergyarInventors: Sandor Batori, Gyorgy Hajos, Andras Messmer, Pal Benko, Laszlo Pallos, Lujza Petocz, Katalin Grasser, Ibolya Kosoczky, Eniko Szirt nee Kiszelly
-
Patent number: 4753938Abstract: The invention relates to new compounds of the general Formula I ##STR1## and isomers thereof wherein R.sub.1 is C.sub.1-10 alkyl, C.sub.3-6 cycloalkyl or phenyl, naphthyl or phenyl-(C.sub.1-4 alkyl), wherein the aryl ring of the three latter groups may optionally bear one or more halogen, nitro, trifluoromethyl, amino, hydroxy, C.sub.1-4 alkyl and/or C.sub.1-4 alkoxy substituent(s);R.sub.2 stands for hydrogen, halogen, hydroxy, oxo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl or naphthyl, wherein the two latter groups may optionally bear one or more halogen, nitro, trifluoromethyl, amino, hydroxy, C.sub.1-4 alkyl and/or C.sub.1-4 alkoxy substituent(s);R.sub.3 represents hydrogen, hydroxy or C.sub.1-4 alkoxy;Z is buta-1,3-dienyl or a group of the general Formula (a) ##STR2## or (b) ##STR3## and X is hydrogen or halogen.The compounds of the general Formula I possess useful pharmacological properties, particularly antidepressant and antiarrhythmial effect.Type: GrantFiled: October 15, 1985Date of Patent: June 28, 1988Assignee: Richter Gedeon Vegyeszeti Gyar Rt.Inventors: Andras Messmer, Sandor Batori, Gyorgy Hajos, Pal Benko, Laszlo Pallos, Lujza Petocz, Katalin Grasser, Eniko Szirt nee Kiszelly
-
Patent number: 4697013Abstract: A one step process for the preparation of compounds having antidepressant activity of the formula I ##STR1## and isomers thereof, wherein R.sub.1, R.sub.2, Z and A.sup.- have the meanings indicated in the claims, which process comprises: heating a compound of the formula II ##STR2## wherein Z, A.sup.-, R.sub.1 and R.sub.2 have the meanings set out in the claims and R.sub.3 stands for hydrogen or C.sub.1-4 alkyl, in the presence of a dehydrating agent to split off a compound of the formula R.sub.3 OH. The invention is also directed to compounds of the formula I, wherein R.sub.2 is halogen and to compositions containing a compound of the formula I which exhibit antidepressant activity.Type: GrantFiled: September 20, 1984Date of Patent: September 29, 1987Assignee: Egyt Gyogyszervegyeszeti GyarInventors: Andras Messmer, Sandor Batori, Gyorgy Hajos, Pal Benko, Laszlo Pallos, Lujza Petocz, Grasser Katalin, Ibolya Kosoczky
-
Patent number: 4602018Abstract: The invention relates to new condensed as-triazine derivatives of the general Formula I ##STR1## and isomers thereof (wherein R.sub.1 stands for C.sub.1-10 alkyl or phenyl or naphthyl, wherein the two latter groups may be optionally substituted by one or more halogen, nitro, amino, hydroxy, C.sub.1-4 alkyl and/or C.sub.1-4 alkoxy substituent(s);R.sub.2 is hydrogen, C.sub.1-4 alkyl, hydroxy, halogen or phenyl or naphthyl, wherein the two latter groups may be optionally substituted by one or more halogen, nitro, amino, hydroxy, C.sub.1-4 alkyl and/or C.sub.1-4 alkoxy substituent(s);R.sub.3 represents hydrogen or C.sub.1-4 alkyl;Z is buta-1,3-dienyl or a group of the Formula (a) ##STR2## and A.sup.- is an anion).The compounds of the general Formula I possess useful pharmacological properties, particularly antiarrhythmial and antidepressant effect.Type: GrantFiled: September 20, 1984Date of Patent: July 22, 1986Assignee: Egyt Gyogyszevegyeszeti GyarInventors: Andras Messmer, Sandor Batori, Gyorgy Hajos, Pal Benko
-
Patent number: 4419355Abstract: The invention relates to new condensed as-triazine derivatives of the general formula (I) ##STR1## wherein Z represents a buta-1,3-dienyl group or a group of the formula (a), (b), (c) or (d) ##STR2## R.sub.1 denotes a C.sub.1-10 alkyl group, an oxo group or a C.sub.6-10 aryl or C.sub.6-10 aryl-(C.sub.1-3 alkyl) group optionally substituted by one or more identical or different substituents selected from the group consisting of amino, nitro, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, hydroxy and halogen,R.sub.2 stands for hydrogen, C.sub.1-10 alkyl or amino,R.sub.3 represents hydrogen, C.sub.1-10 alkyl or C.sub.6-10 aryl or C.sub.6-10 aryl-(C.sub.1-3 alkyl) optionally substituted by one or more identical or different substituents selected from the group consisting of nitro, amino, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, hydroxy and halogen,X.sup.- denotes an anion, andn is 0 or 1,with the proviso that if n is O, R.sub.1 is other than an oxo group and R.sub.1 ' and R.sub.Type: GrantFiled: July 16, 1981Date of Patent: December 6, 1983Assignee: Egyt Gyogyszervegyeszeti GyarInventors: Ibolya Kosoczky, Eva Toncsev, nee Ravasz, Pal Benko, Laszlo Pallos, Lujza Petocz, Sandor Batori, Gyorgy Hajos, Andras Messmer, Katalin Grasser
-
Patent number: 4324786Abstract: New pyrido[2,3-e]-as-triazine derivatives of the general formula (I), ##STR1## wherein R.sup.1 and R.sup.2 each stand for a C.sub.1-20 alkylcarbonyl, halogenated (C.sub.1-4 alkyl)-carbonyl, C.sub.1-4 alkoxycarbonyl, benzoyl, phenyl-(C.sub.1-4 alkyl)-carbonyl or phenyl-(C.sub.2-4 alkenyl)-carbonyl group or a 5-10-membered mono- or bicyclic nitrogen-containing heterocyclic acid residue (preferably a pyridylcarbonyl group) containing optionally one or more additional nitrogen, oxygen and/or sulfur atoms in the heterocyclic ring, and optionally one or more identical or different substituents selected from the group consisting of halogen, C.sub.1-4 alkoxy, nitro and hydroxy are attached to the aromatic or heterocyclic rings, furthermore one of R.sup.1 and R.sup.2 may also stand for hydrogen atom, orR.sup.1 and R.sup.2 may form, together with the adjacent nitrogen atoms, a pyrazole-2,4 ring having optionally a C.sub.1-6 alkyl substituent in position 3, andR.sup.3 stands for hydrogen, halogen, C.sub.Type: GrantFiled: April 25, 1980Date of Patent: April 13, 1982Assignee: Egyt Gyogyszervegyeszeti GyarInventors: Andras Messmer, Pal Benko, Gyorgy Hajos, Lujza Petocz, Ibolya Kosoczky, Peter Gorog
-
Patent number: 4324894Abstract: Novel aminoisoquinoline derivatives of the general formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1-4 alkyl group,R.sub.2 represents a hydrogen atom,R.sub.3 represents a hydrogen atom,R.sub.4 represents a morpholinyl group or a piperazinyl group substituted with a pyridyl group, andpharmaceutically acceptable acid addition salts and quaternary derivatives thereof have been prepared. The novel compounds exert narcosis potentiating effects.Type: GrantFiled: April 10, 1980Date of Patent: April 13, 1982Assignee: Egyt Gyogyszervegyeszeti GyarInventors: Pal Benko, Andras Gelleri, Gyorgy Hajos, Andras Messmer, Laszlo Pallos, Lujza Petocz, Ibolya Kosoczky, Katalin Grasser, Peter Gorog, Eniko Szirt nee Kiszelly
-
Patent number: 4320127Abstract: The invention relates to new pyrido[3,2-e]-as-triazine derivatives of the formula I and pharmaceutically acceptable acid addition salts thereof, ##STR1## wherein R.sub.1 stands for a C.sub.1-20 alkyl-carbonyl group, halogen-C.sub.1-4 alkyl-carbonyl, benzoyl, phenyl-C.sub.1-4 alkyl-carbonyl, or pyridyl-carbonyl group;R.sub.2 is a hydrogen atom or a C.sub.1-4 alkyl-carbonyl group; or R.sub.1 and R.sub.2 form together with the adjacent nitrogen atoms a pyrazole-2,4-dione ring which carries a C.sub.1-6 alkyl substituent in position 3;R.sub.3 is a hydrogen atom, a C.sub.1-20 alkyl, phenyl, phenyl-C.sub.1-3 alkyl, furyl or pyridyl group or a phenyl group optionally substituted by one to three C.sub.1-4 alkoxy-groups.The compounds of the formula I are prepared by acylating the respective 1,2-un-substituted 1,2-dihydropyrido [3,2-e]-as-triazine derivatives. The new compounds exert valuable effects on the central nervous system and possess analgesic, antiphlogistic effects, and can be applied to advantage in therapy.Type: GrantFiled: May 23, 1980Date of Patent: March 16, 1982Assignee: Edyt Gyogyszervegyeszeti GyarInventors: Pal Benko, Andras Messmer, Gyorgy Hajos, Sandor Batori, Lujza Petocz, Iboly Kosoczky, Peter Gorog
-
Patent number: 4316022Abstract: The invention relates to new benzo-as-triazine derivatives of the formulae (I) and (Ia) and pharmaceutically acceptable acid addition salts thereof, ##STR1## wherein R.sub.1 and R.sub.2 each represent hydrogen, a C.sub.1-20 alkylcarbonyl group, a phenylcarbonyl or phenyl-(C.sub.1-4 alkyl)-carbonyl group having optionally one or more halogen, hydroxy or C.sub.1-3 alkoxy substituents which may be the same or different, furthermore a pyridylcarbonyl, a pyrazinylcarbonyl, a furylcarbonyl, a chloroacetyl or a C.sub.1-4 alkoxycarbonyl group, orR.sub.1 and R.sub.2 may form, together with the adjacent nitrogen atoms, a pyrazole ring having optionally a C.sub.1-6 alkyl substituent in position 4,with the proviso that one of R.sub.1 and R.sub.2 is always different from hydrogen,R.sub.3 stands for hydrogen, mercapto group, a C.sub.1-4 alkylmercapto group, amino group, a C.sub.1-4 alkylamino group, a piperazino group having optionally an N-alkyl or 2-pyridyl substituent, a morpholino group or a piperidino group, andR.sub.Type: GrantFiled: March 28, 1980Date of Patent: February 16, 1982Assignee: EGYT Gyogyszervegyeszeti GyarInventors: Gyorgy Hajos, Andras Messmer, Pal Benko, Lujza Petocz, Peter Gorog, Ibolya Kasoczky