Patents by Inventor Klaus Strein

Klaus Strein 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: 4985448
    Abstract: Lactam compounds of the formula ##STR1## in which: R is hydrogen, alkyl or cycloalkyl;R.sup.1 is hydrogen, alkyl, alkenyl or cycloalkyl;R.sup.2 is alkyl, alkenyl, cyano or a carbonyl substituted hydroxyl, alkyl, alkoxy, amino, alkylamino or hydrazino; orR.sup.1 and R.sup.2 together represent alkylidene cycloalkylidene; orR.sup.1, R.sup.2 and the adjacent carbon atom form a spirocyclic ring;n is 0 or 1;A is a --Co--NH--, --NH--CO--NH-- or --O--CO--NH--;X is a valency bond, alkylene or alkenylene; andR.sup.3 is optionally substituted phenyl, pyridyl, methylenedioxyphenyl or a five-membered heterocycle; or when X is a valency bond, R.sup.3 can also be an optionally substituted alkyl or alkino group, or cycloalkyl. The compounds are useful for the inhibition of erythrocyte and thrombocyte aggregation.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: January 15, 1991
    Assignee: Boehringer Mannheim GmbH
    Inventors: Harald Zilch, Alfred Mertens, Wolfgang Von Der Saal, Erwin Boehm, Klaus Strein
  • Patent number: 4963686
    Abstract: The new pyrrolobenzimidazoles according to the present invention are compounds of the general formula: ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl, alkenyl or cycloalkyl radical, R.sub.2 is a hydrogen atom, an alkyl or alkenyl radical or a cyano group or a carbonyl group substituted by a hydroxyl or hydrazino group or by an alkyl, alkoxy, amino, alkylamino or dialkylamino group or together with R.sub.1 represents a cycloalkylene radical or R.sub.1 and R.sub.2 together form an alkylidene or cycloalkylidene radical, X is a valency bond, a C.sub.1 -C.sub.4 alkylene radical or a vinylene radical, T is an oxygen or sulphur atom and Py is a 2-, 3- or 4-pyridyl radical which optionally carries an oxygen atom on the ring heteroatom and/or can be substituted one or more times by alkyl, alkoxy, hydroxyl, cyano or nitro, as well as by halogen; the tautomers thereof and the physiologically acceptable salts thereof with inorganic and organic acids.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: October 16, 1990
    Assignee: Boehringer Mannheim GmbH
    Inventors: Jens-Peter Holck, Alfred Mertens, Wolfgang Kampe, Bernd Muller-Beckmann, Gisbert Sponer, Klaus Strein
  • Patent number: 4954498
    Abstract: The present invention provides tricyclic benzimidazoles of the formula: ##STR1## wherein R.sub.1 is a phenyl radical of the general formula: ##STR2## wherein R.sub.2, R.sub.3 and R.sub.4 can be the same or diferent as in claim 1. For A, B, C and D are understood those compounds where one or two of A, B, C or D are nitrogen. These compounds are useful to inhibit the aggregation of thrombocytes and erythrocytes, lower blood pressure and can increase the power of the heart.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: September 4, 1990
    Assignee: Boehringer Mannheim GmbH
    Inventors: Alfred Mertens, Wolfgang von der Saal, Erwin Boehm, Klaus Strein
  • Patent number: 4880805
    Abstract: The present invention is concerned with the use of compounds of the general formula: ##STR1## wherein A is an optionally substituted phenyl or heteroaromatic radical, R.sub.6 and R.sub.7 are hydrogen or lower alkyl, X is an alkylene chain containing up to 6 carbon atoms, Y is a valency bond or a >C.dbd.O group and B is an optionally substituted phenyl or heteroaromatic radical, as well as of their pharmacologically acceptable salts for the treatment of blood flow disturbances. The present invention also provides pharmaceutical compositions which contain these compounds.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: November 14, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Erwin Bohm, Jens-Peter Holck, Wolfgang Kampe, Herbert Leinert, Bernd Muller-Beckmann, Klaus Strein
  • Patent number: 4874756
    Abstract: The present invention provides compounds of the general formula ##STR1## wherein the variables are as defined herein. The present invention also provides processes for the preparation thereof, pharmaceutical compositions containing them and intermediates for the preparation thereof.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: October 17, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Alfred Mertens, Wolfgang von der Saal, Herbert Berger, Bernd Muller-Beckmann, Klaus Strein
  • Patent number: 4863945
    Abstract: Pyrrolobenzimidazoles of the formula: ##STR1## are useful for treatment of heart and circulatory diseases. R.sub.1 is substituted phenyl; or optionally substituted naphthyl or a five- or six-membered heterocyclic group which can be condensed with a phenyl ring to form a bicyclic radical. R.sub.2 is hydrogen, alkyl, alkenyl or cycloalkenyl; R.sub.3 is alkyl, alkenyl or hydroxyalkyl or with R.sub.2 together forms cycloakylene; or R.sub.2 and R.sub.3 together form alkylidene or cycloalkylidene. R.sub.4 is hydrogen or lower alkanoyl. X is a valency bond, alkylene, vinylene, imino or carbonylamino. T stands for two hydrogen atoms. When X is a valency bond, R.sub.1 can also be hydrogen, hydrocarbyl which may also contain oxygen, amino, sulfur, carbonyl and sulfonyl groups. When X is imino or carbonylamino or when R.sub.1 is a bicyclic radical, T can also be oxygen. The compounds also include the tautomers and physiologically acceptable salts with inorganic and organic acids.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: September 5, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Walter-Gunar Friebe, Alfred Mertens, Klaus Strein, Erwin Boehm
  • Patent number: 4863949
    Abstract: The present invention provides compounds of the general formula: ##STR1## wherein Ar is a substituted or unsubstituted aromatic or heteroaromatic radical, A is a straight-chained or branched alkylene chain containing up to 8 carbon atoms, a --CH.sub.2 -- group of which can be replaced by a cycloalkylene radical containing 3 to 7 carbon atoms, B is a straight-chained mono- or bicyclic, optionally branched, saturated or unsaturated alkylene chain containing up to 12 carbon atoms, a --CH.sub.2 -- group of which can be replaced by a cycloalkylene radical containing 3 to 7 carbon atoms and/or up to two --CH.sub.2 -- groups of which can be replaced by an oxygen or a sulphur atom or by an --S(.dbd.O) or --S(.dbd.O).sub.2 group, X is a valency bond, an oxygen atom or an --NR.sup.1 group, in which R.sup.1 is a hydrogen atom or a straight-chained or branched, saturated or unsaturated alkyl or nitroxyalkyl radical containing up to 6 carbon atoms or R.sup.1, together with the nitrogen atom of the --NR.sup.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: September 5, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Herbert Simon, Helmut Michel, Wolfgang Bartsch, Klaus Strein
  • Patent number: 4835280
    Abstract: The present invention provides Indolines of the formula: ##STR1## ps useful to provide pharmaceutically active pyrrolobenzimidazoles or tautomers thereof, of the formula: These compounds are useful for treating heart or circulatory diseases, especially those which respond to a change of blood pressure, an increase in cardiac output and/or a change in micro-circulation.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: May 30, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Alfred Martens, Jens-Peter Holck, Herbert Berger, Bernd Muller-Beckman, Klaus Strein, Egon Roesch
  • Patent number: 4831032
    Abstract: The present invention provides benzimidazoles of the general formula: ##STR1## wherein R.sub.1, X, A, and R.sub.2 are as defined in the specification. The present invention also provides processes for the preparation of these new benzimidazoles and pharmaceutical compositions containing them, as well as intermediates for the preparation thereof.The new benzimidazoles are useful to treat heart or circulatory diseases which respond to a lowering of blood pressure, a positive inotropic action and/or an improvement in microcirculation.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: May 16, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Wolfgang von der Saal, Alfred Mertens, Herbert Berger, Bernd Muller-Beckmann, Klaus Strein
  • Patent number: 4826847
    Abstract: The present invention provides oxindole derivatives of the formula: ##STR1## wherein the various substituents are defined hereinbelow. The above compounds display nitrate-like as well as .beta.-blocking actions.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: May 2, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Helmut Michel, Wolfgang Kampe, Klaus Strein, Wolfgang Bartsch
  • Patent number: 4810801
    Abstract: The present invention provides new pyrrolobenzimidazoles of the general formula: ##STR1## wherein R.sub.1 -R.sub.5, X and T are as defined in the specification. The present invention also provides processes for the preparation of these compounds and pharmaceuticals containing them for the prophylaxis and treatment of heart and circulatory diseases.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: March 7, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Alfred Mertens, Jens-Peter Holck, Wolfgang Kampe, Bernd Muller-Beckmann, Klaus Strein, Wolfgang Schaumann
  • Patent number: 4780474
    Abstract: The present invention is concerned with the use of compounds of the general formula: ##STR1## wherein A is an optionally substituted phenyl or heteroaromatic radical, R.sub.6 and R.sub.7 are hydrogen or lower alkyl, X is an alkylene chain containing up to 6 carbon atoms, Y is a valency bond or a >C.dbd.O group and B is an optionally substituted phenyl or heteroaromatic radical, as well as of their pharmacologically acceptable salts for the treatment of blood flow disturbances. The present invention also provides pharmaceutical compositions which contain these compounds.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: October 25, 1988
    Assignee: Boehringer Mannheim GmbH
    Inventors: Erwin Bohm, Jens-Peter Holck, Wolfgang Kampe, Herbert Leinert, Bernd Muller-Beckmann, Klaus Strein
  • Patent number: 4721717
    Abstract: The present invention provides aminoalcohols of the general formula: ##STR1## wherein R.sub.1 and R.sub.2, which can be same or different, are hydrogen atoms, hydroxyl groups, C.sub.1 -C.sub.4 -alkoxy, benzyloxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.4 -alkanesulphonylamino, C.sub.1 -C.sub.4 -alkanesulphinyl or C.sub.1 -C.sub.4 -alkanesulphonyl radicals, m is 2, 3 or 4, X and Y, which can be the same or different, are hydrogen atoms or benzyl radicals and R.sub.3 is a phenyl radical substituted twice by C.sub.1 -C.sub.6 -alkyl radicals, a nitrophenyl radical, an aminophenyl radical, a 1,3,5-tri-C.sub.1 -C.sub.6 -alkyl-2,4-dioxo-1H,3H-pyrimidin-6-yl radical, an indolyl radical, an indazolyl radical, a benzimidazolyl radical, a 1,4-di-C.sub.1 -C.sub.6 -alkylpyrazol-5-yl radical or a radical of the general formula: ##STR2## wherein R.sub.4 and R.sub.5, which can be the same or different, are C.sub.1 -C.sub.4 -alkyl radicals and R.sub.6 is a C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: January 26, 1988
    Assignee: Boehringer Mannheim GmbH
    Inventors: Walter-Gunar Friebe, Wolfgang Kampe, Erwin Bohm, Klaus Strein
  • Patent number: 4710510
    Abstract: The present invention provides new pyrrolobenzimidazoles of the general formula: ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl, alkenyl or cycloalkyl radical; R.sub.2 is a hydrogen atom, cyano group or alkyl or alkenyl radical or a carbonyl group substituted by hydroxyl, alkyl, alkoxy, amino, alkylamino, dialkylamino or hydrazino or together with R.sub.1 forms a cycloalkylene radical or R.sub.1 and R.sub.2 together form an alkylidene or cycloalkylidene radical; R.sub.3, R.sub.4 and R.sub.
    Type: Grant
    Filed: December 10, 1985
    Date of Patent: December 1, 1987
    Assignee: Boehringer Mannheim GmbH
    Inventors: Alfred Mertens, Jens-Peter Holck, Wolfgang Kampe, Bernd Muller-Beckmann, Klaus Strein, Wolfgang Schaumann
  • Patent number: 4695567
    Abstract: The present invention provided pyrrolobenzimidazoles or tautomer thereof, of the general formula: ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.3 -C.sub.7 cycloalkyl;R.sub.2 is hydrogen, cyano, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, or a carbonyl group substituted by hydroxyl, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkyoxy, amino, C.sub.1 -C.sub.6 alkylamino, C.sub.2 -C.sub.12 dialkylamino or hydrazino, orR.sub.2 and R.sub.1 together with the carbon to which they are attached form a C.sub.3 -C.sub.8 spirocycloalkyl ring, or R.sub.1 and R.sub.2 together form C.sub.3 -C.sub.7 alkylidene or C.sub.3 -C.sub.7 cycloalkylkidene,X is a valency bond, C.sub.1 -C.sub.
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: September 22, 1987
    Assignee: Boehringer Mannheim GmbH
    Inventors: Alfred Mertens, Jens-Peter Holck, Herbert Berger, Bernd Muller-Beckmann, Klaus Strein, Egon Roesch
  • Patent number: 4666923
    Abstract: Pyrrolobenzimidazoles, processes for the preparation thereof and pharmaceutical compositions thereof for the treatment of coronary insufficiencies, cardiac failure, blood circulatory disturbances and occlusive diseases. The new pyrrolobenzimidazoles are of the formula ##STR1## wherein R.sub.1 is hydrogen, alkyl, alkenyl or cycloalkyl, R.sub.2 is hydrogen, alkyl, alkenyl, cyano or a substituted carbonyl or R.sub.1 and R.sub.2 together represent cycloalkylene or form alkylidene or cycloalkylidene, X is a valency bond, C.sub.1 -C.sub.4 alkylene or vinylene, T is oxygen or sulphur and Py is pyridyl or substituted pyridyl and including the tautomers thereof and the physiologically acceptable salts thereof.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: May 19, 1987
    Assignee: Boehringer Mannheim GmbH
    Inventors: Jens-Peter Holck, Alfred Mertens, Wolfgang Kampe, Bernd Muller-Beckmann, Gisbert Sponer, Klaus Strein
  • Patent number: 4612313
    Abstract: The present invention provides phenylacetonitrile derivatives of the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, which can be the same or different, are hydrogen or haolgen atoms or alkyl, alkoxy, nitro, amino or acylamino radicals and two adjacent substituents can together also form a methylenedioxy or ethylenedioxy radical, A is a radical of the general formula: ##STR2## in which R.sub.6 is a straight-chained, cyclic or branched, saturated or unsaturated alkyl radical containing 2 to 12 carbon atoms, R.sub.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: September 16, 1986
    Assignee: Boehringer Mannheim GmbH
    Inventors: Herbert Leinert, Wolfgang Kampe, Klaus Strein, Bernd Muller-Beckmann, Wolfgang Bartsch
  • Patent number: 4479962
    Abstract: The present invention provides heteroaryloxypropanolamines and pharmaceutical compositions containing them, for combating, and for the prophylaxis of, cardiac and circulatory diseases. The heteroaryloxypropanolamines of the present invention are of the general formula: ##STR1## wherein A is a bi- or tricyclic heteroaromatic radical, which is optionally partly hydrogenated, X is a straight-chained or branched alkylene chain containing 2 to 6 carbon atoms, R.sub.1 and R.sub.2, which can be the same or different, are hydrogen atoms or lower alkyl or benzyl radicals, R.sub.3, R.sub.4 and R.sub.5, which can be the same or different, are hydrogen atoms or lower alkyl, benzyl, formyl, lower alkanoyl, cyano, hydroxymethyl, lower alkoxycarbonyl or carbamoyl radicals or the divalent substituents sulfur or oxygen and R.sub.6, R.sub.7 and R.sub.8, which can be the same or different, are hydrogen or halogen atoms, lower alkyl, nitro, amino, lower alkylthio or lower alkoxy radicals or R.sub.6 and R.sub.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: October 30, 1984
    Assignee: Boehringer Mannheim GmbH
    Inventors: Fritz Wiedemann, Helmut Michel, Wolfgang Weckerle, Egon Roesch, Klaus Strein