Patents by Inventor Ulrich Niewohner

Ulrich Niewohner 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: 5776964
    Abstract: The invention relates to phenylacetic acid derivatives which are substituted by a five-membered nitrogen heterocycle bonded via an N atom. They are prepared by reaction of phenylacetic acid derivatives substituted with leaving groups with the appropriate nitrogen heterocycles and can be used as active substances in medicaments for the treatment of high blood pressure and atherosclerosis.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: July 7, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Muller, Klaus Mohrs, Jurgen Dressel, Rudolf Hanko, Walter Hubsch, Michael Matzke, Ulrich Niewohner, Siegfried Raddatz, Thomas Kramer, Matthias Muller-Gliemann, Hans-Peter Bellemann, Martin Beuck, Stanislav Kazda, Stefan Wohlfeil
  • Patent number: 5721238
    Abstract: 2,8-Disubstituted quinazolinones are prepared by first subjecting the quinazolinone basic skeleton to condensation by customary reactions and then introducing the desired substituents into the 8-position. The compounds are suitable as active compounds in medicaments, in particular for the treatment of inflammations, thromboembolic diseases and cardiovascular diseases.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: February 24, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Fred Robert Heiker, Ulrich Niewohner, Wolfgang Hartwig, Helmuth Schutz, Erwin Bischoff, Elisabeth Perzborn, Matthias Schramm
  • Patent number: 5693650
    Abstract: 4-(Quinolin-2-yl-methoxy)-phenyl-acetic acid derivatives are prepared by reacting quinoline-methoxy-phenyl-acetic acids with the corresponding glycinol derivatives, if appropriate with activation of the carboxylic acid function. The new compounds are suitable as active compounds in medicaments, in particular in antiatherosclerotic medicaments.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: December 2, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Muller, Richard Connell, Siegfried Goldmann, Klaus-Helmut Mohrs, Rolf Angerbauer, Matthias Muller-Gliemann, Ulrich Niewohner, Rudi Grutzmann, Martin Beuck, Stefan Wohlfeil, Hilmar Bischoff, Dirk Denzer
  • Patent number: 5658934
    Abstract: The invention relates to new aryl-substituted alkoxycarbonyl-1,4-dihydropyridine-5-carboxylic acid esters, processes for their preparation and their use in medicaments, in particular as agents having a cerebral action.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: August 19, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Meier, Wolfgang Hartwig, Bodo Junge, Ulrich Niewohner, Rudolf Schohe-Loop, Zhan Gao, Bernard Schmidt, Maarten de Jonge, Teunis Schuurman
  • Patent number: 5521206
    Abstract: The invention relates to phenylacetic acid derivatives of the formula ##STR1## which are substituted by a five-membered nitrogen heterocycle bonded via an N atom. They are prepared by reaction of phenylacetic acid derivatives substituted with leaving groups with the appropriate nitrogen heterocycles and can be used as active substances in medicaments for the treatment of high blood pressure and atherosclerosis.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: May 28, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Muller, Klaus Mohrs, Jurgen Dressel, Rudolf Hanko, Walter Hubsch, Michael Matzke, Ulrich Niewohner, Siegfried Raddatz, Thomas Kramer, Matthias Muller-Gliemann, Hans-Peter Belleman, Martin Beuck, Stanislav Kazda, Stefan Wohlfeil
  • Patent number: 5420149
    Abstract: Imidazolyl-substituted phenylacetic acid derivatives are prepared by first reacting suitably substituted phenylacetic acid with imidazoles and subsequently converting the product into an amide. The compounds can be employed as active compounds in medicaments, in particular for treating hypertension and atherosclerosis.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: May 30, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich E. Muller, Matthias Muller-Gliemann, Jurgen Dressel, Peter Fey, Rudolf Hanko, Walter Husch, Thomas Kramer, Martin Beuck, Stanislav Kazda, Stefan Wohlfeil, Ozkan Yalkinoglu, Andreas Knorr, Johannes-Peter Stasch, Ulrich Niewohner
  • Patent number: 5272161
    Abstract: Indolesulphonamide-substituted dihydropyridines can be prepared by reaction of dihydropyridinecarboxylic acids with hydroxy-substituted indolesulphonamides, or by reaction of amino- or hydroxy-substituted dihydropyridines with indolesulphonamidecarboxylic acids. The indolesulphonamide-substituted dihydropyridines can be employed as active substances in medicaments for the treatment of cardiac, circulatory and thromboedabolic disorders.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: December 21, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Siegfried Goldmann, Ulrich Muller, Andreas Knorr, Elisabeth Perzborn, Matthias Schramm, Bernhard Beckermann
  • Patent number: 5264458
    Abstract: Iso- and heterocyclic phenylsulphonamides can be prepared by reaction of corresponding iso- and heterocyclic amines with phenylsulphonic acid derivatives. The iso- and heterocyclic phenylsulphonamides have thrombocyte aggregation-inhibiting and thromboxane A.sub.2 antagonist action and can be used in medicaments.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: November 23, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Franz-Peter Hoever, Elisabeth Perzborn, Volker-Bernd Fiedler, Peter Norman, Hilary P. Francis, Marie G. McKenniff
  • Patent number: 5223517
    Abstract: Heterocyclically substituted cycloalkano[b]-indolesulphonamides can be prepared by reaction of appropriate N-unsubstituted indoles with acrylonitrile, followed by hydrolysis, esterification or amidation, or by reaction of heterocyclically substituted hydrazines with cycloalkanones or by subsequent introduction of the heterocyclic group into appropriate indole derivatives. The heterocyclically substituted cycloalkano[b]-indolesulphonamides can be employed for the treatment of thromboembolic disorders, ischaemias, arteriosclerosis, asthma, allergies and for the prophylaxis of myocardial infarcts.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: June 29, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich E. Muller, Ulrich Niewohner, Elisabeth Perzborn, Erwin Bischoff, Hans-Georg Dellweg
  • Patent number: 5204374
    Abstract: New cycloalkano[b]dihydroindoles and -indolesulphonamides, substituted by heterocycles, of the formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different andrepresent hydrogen, nitro, cyano, halogen, trifluoromethyl, carboxyl, hydroxyl or trifluoromethoxy, orrepresent a group of the formula --S(O).sub.w R.sup.5, in whichR.sup.5 denotes alkyl or optionally substituted aryl,w denotes the number 0, 1 or 2, orrepresents alkoxy or alkoxycarbonyl, or benzyloxy, orrepresents a group of the formula --NR.sup.6 R.sup.7, in whichR.sup.6 and R.sup.7 are identical or different anddenote hydrogen, alkyl or acyl ordenote aryl, ordenote a group of the formula --S(O).sub.w R.sup.5, in which R.sup.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: April 20, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich E. Muller, Ulrich Rosentreter, Ulrich Niewohner, Elisabeth Perzborn, Erwin Bischoff, Hans-Georg Dellweg, Peter Norman, Nigel J. Cuthbert, Hilary P. Francis
  • Patent number: 5191092
    Abstract: Iso- and heterocyclic phenylsulphonamides can be prepared by reaction of corresponding iso- and heterocyclic amines with phenylsulphonic acid derivatives. The iso- and heterocyclic phenylsulphonamides have thrombocyte aggregation-inhibiting and thromboxane A.sub.2 antagonist action and can be used in medicaments.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: March 2, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Franz-Peter Hoever, Elisabeth Perzborn, Volker-Bernd Fiedler, Peter Norma, Hilary P. Francis, Marie G. McKenniff
  • Patent number: 5185348
    Abstract: The compounds according to the invention can be prepared by reaction of the corresponding amines with sulphonic acid derivatives, or in the case of the aminooxy compounds by reacton of ketones with aminooxy compounds or alkylation of hydroxylamines, or in the case of the alkene compounds by reaction of ketones with phosphorusylides. The phenylsulphonamide substituted pyridinealkene- and -aminooxyalkencarboxylic acid derivatives can be used for the treatment of thromboembolic disorders, ischaemias, arteriosclerosis, allergies and asthma.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: February 9, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Ulrich E. Muller, Elisabeth Perzborn, Erwin Bischoff, Hans-Georg Dellweg
  • Patent number: 5155121
    Abstract: The compounds according to the invention can be prepared by reaction of the corresponding amines with sulphonic acid derivatives, or in the case of the aminooxy compounds by reaction of ketones with aminooxy compounds or alkylation of hydroxylamines, or in the case of the alkene compounds by reaction of ketones with phosphorusylides. The phenylsulphonamide substituted pyridinealkene- and -aminooxyalkenecarboxylic acid derivatives can be used for the treatment of thromboembolic disorders, ischaemias, arteriosclerosis, allergies and asthma.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: October 13, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Ulrich E. Muller, Elisabeth Perzborn, Erwin Bischoff, Hans-Georg Dellweg
  • Patent number: 4921998
    Abstract: Antithrombotic, antiatherosclerotic and antiischaemic compounds of the formula ##STR1## in which R.sup.1 is ##STR2## or SO.sub.2 R.sup.4, R.sup.3 is aryl, substituted aryl, heteroaryl, aralkyl or the group ##STR3## R.sup.4 is aryl or substrituted aryl, R.sup.2 is OH, alkoxy, phenoxy, benzoxy or NR.sup.5 R.sup.6, andR.sup.5 and R.sup.6 each independently is hydrogen or alkyl, orone of the radicals R.sup.5 or R.sup.6 is benzyl, and physiologically acceptable salts thereof with mono- and divalent cations.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: May 1, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Franz-Peter Hoever, Bodo Junge, Elisabeth Perzborn, Friedel Seuter, Volker-Bernd Fiedler
  • Patent number: 4886898
    Abstract: Certain intermediate aminomethyl-5,6,7,8-tetrahydronaphthyl-oxyacetic acid derivatives of the formula ##STR1## in which R.sup.2 is hydroxyl, alkoxy, phenoxy, benzoxy or NR.sup.4 R.sup.5, andR.sup.4 and R.sup.5 each independently is hydrogen or alkyl, or one of the radicals R.sup.4 or R.sup.5 is benzyl,which are useful in preparing the corresponding aryl-sulfonamides which in-turn have antithrombotic, antiatherosclerotic and antiischaemic properties.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: December 12, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Franz-Peter Hoever, Folker Lieb, Ulrich Rosentreter, Elisabeth Perzborn, Volker-Bernd Fiedler, Friedel Seuter
  • Patent number: 4882353
    Abstract: For inhibiting thombocyte aggregation, vasodilating and bronchodilating, the new chroman derivatives of the formula ##STR1## in which R.sup.1 stands for hydrogen, halogen, alkyl, hydroxyl, alkoxy, trifluoromethyl or cyano,R.sup.2 and R.sup.3 are identical or different and stand for hydrogen, alkyl, cycloalkyl or aryl,R.sup.4 stands for hydroxyl, alkoxy, aryloxy, aralkoxy or for a group of the formula --NR.sup.5 R.sup.6, whereR.sup.5 and R.sup.6 are identical or different and in each case denote hydrogen, alkyl, aryl or aralkyl,X denotes a direct bond or an oxygen or sulphur atom, NH or N-alkyl, andn denotes 0 or 1,and their physiologically tolerable salts.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: November 21, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Franz-Peter Hoever, Folker Lieb, Hermann Oediger, Ulrich Rosentreter, Horst Boshagen, Elisabeth Perzborn, Volker-Bernd Fiedler, Friedel Seuter
  • Patent number: 4868331
    Abstract: Antithrombotic, antiatherosclerotic and antiischaemic compounds of the formula ##STR1## in which R.sup.1 is ##STR2## or SO.sub.2 R.sup.4, R.sup.3 is aryl, substituted aryl, heteroaryl, aralkyl or the group ##STR3## R.sup.4 is aryl or substituted aryl, R.sup.2 is OH, alkoxy, phenoxy, benzoxy or NR.sup.5 R.sup.6, andR.sup.5 and R.sup.6 each independently is hydrogen or alkyl, orone of the radicals R.sup.5 or R.sup.6 is benzyl,and physiologically acceptable salts thereof with mono- and divalent cations.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: September 19, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Franz-Peter Hoever, Bodo Junge, Elisabeth Perzborn, Friedel Seuter, Volker-Bernd Fiedler
  • Patent number: 4868332
    Abstract: An aminomethyl-5,6,7,8-tetrahydronaphthyl-oxyacetic acid derivative of the formula ##STR1## in which R.sup.3 is aryl or substituted aryl,R.sup.2 is hydroxyl, alkoxy, phenoxy, benzoxy or NR.sup.4 R.sup.5, andR.sup.4 and R.sup.5 each independently is hydrogen or alkyl, or one of the radicals R.sup.4 or R.sup.5 is benzyl,and physiologically acceptable salts thereof with monovalent or divalent cations which have antithrombotic, antiatherosclerotic and antiischaemic activities.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: September 19, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Niewohner, Franz-Peter Hoever, Folker Lieb, Ulrich Rosentreter, Elisabeth Perzborn, Volker-Bernd Fiedler, Friedel Seuter
  • Patent number: 4853406
    Abstract: Thrombocyte aggregation-inhibiting polyhydrobenz[c,d]indolesulphonamide of the formula ##STR1## in which R.sup.1 is hydrogen, aryl or alkyl,R.sup.2 is hydrogen, halogen, alkyl, alkoxy, trifluoromethyl, trifluoromethoxy, hydroxyl, aralkoxy ora group of the formula ##STR2## R.sup.3 and R.sup.4 each independently is hydrogen, alkyl, aryl, aralkyl or acyl andX is cyano or carboxyl, and salts thereof. Intermediates therefor of the formula ##STR3## are also new.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: August 1, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Rosentreter, Horst Boshagen, Folker Lieb, Hermann Oediger, Ulrich Niewohner, Friedel Seuter, Elisabeth Perzborn, Volker-Bernd Fiedler
  • Patent number: 4659737
    Abstract: Substituted benzopyrans of the formula ##STR1## in which --A-- is a single or double bond,X is a direct bond, optionally substituted methylene, oxygen or optionally substituted --NH--, and the various other radicals can have various meanings,or pharmaceutically acceptable addition salts thereof, which possess anti-hypertensive activity.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: April 21, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Joachim Kabbe, Ulrich Niewohner, Arno Widdig, Andreas Knorr, Bernward Garthoff, Stanislav Kazda