Patents by Inventor Gerhard Walther
Gerhard Walther 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).
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Patent number: 4891378Abstract: The invention relates to new substituted pyrrolidinones of general formula ##STR1## wherein R.sub.1 represents a phenyl group which may be mono- or di-substituted by methyl, methoxy, fluorine, chlorine, bromine or trifluoromethyl, or a pyridyl group;R.sub.2 represents hydrogen or a straight-chained or branched alkyl group with 1-4 carbon atoms;R.sub.3 represents a straight-chained or branched alkyl group with 1-3 carbon atoms, a hydroxyalkyl group with 2-3 carbon atoms, a phenyl group which can be mono- or di-substituted by chlorine, bromine, methyl or methoxy, a cyclohexyl group or a dialkylamino alkyl group, where in each alkyl group can contain from 1-3 carbon atoms;R.sub.4 represents hydrogen or a straight-chained or branched alkyl group with 1-3 carbon atoms; orR.sub.3 and R.sub.Type: GrantFiled: June 12, 1989Date of Patent: January 2, 1990Assignee: Boehringer Ingelheim Zentrale GmbHInventors: Karl-Heinz Weber, Claus Schneider, Gerhard Walther, Dieter Hinzen, Franz J. Kuhn, Erich Lehr, Helmut Ensinger, Wolfgang Troger
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Patent number: 4857528Abstract: The invention relates to substituted pyrrolidinones of general formula ##STR1## wherein R.sub.1 represents a phenyl group which may be mono- or di-substituted by methyl, methoxy, fluorine, chlorine, bromine or trifluoromethyl, or a pyridyl group;R.sub.2 represents hydrogen or a straight-chained or branched alkyl group with 1-4 carbon atoms;R.sub.3 represents a straight-chained or branched alkyl group with 1-3 carbon atoms, a hydroxyalkyl group with 2-3 carbon atoms, a phenyl group which can be mono- or di-substituted by chlorine, bromine, methyl or methoxy, a cyclohexyl group or a dialkylamino alkyl group, where in each alkyl group can contain from 1-3 carbon atoms;R.sub.4 represents hydrogen or a straight-chained or branched alkyl group with 1-3 carbon atoms; orR.sub.3 and R.sub.Type: GrantFiled: April 20, 1988Date of Patent: August 15, 1989Assignee: Boehringer Ingelheim KGInventors: Karl-Heinz Weber, Claus Schneider, Gerhard Walther, Dieter Hinzen, Franz J. Kuhn, Erich Lehr, Helmut Ensinger, Wolfgang Troger
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Patent number: 4833140Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms;R.sub.2 is 2-, 3- or 4-pyridyl, phenyl or mono- or disubstituted phenyl, where the substituents are each individually alkoxy of 1 to 2 carbon atoms, fluorine, chlorine, bromine, trifluoromethyl, alkyl or 1 to 4 carbon atoms, hydroxyl or nitro; andR.sub.3 and R.sub.4 are each independently hydrogen or alkyl of 1 to 4 carbon atoms; orR.sub.3 and R.sub.4, together with each other and the nitrogen atom to which they are attached, form an unsubstituted or methyl-substituted, saturated 5- or 6-membered heterocycle which may contain an additional oxygen or nitrogen heteroatom, or form an imidazole ring;where the aminomethyl substituent is attached to the 4- or 5-position or the pyrrolidine ring, and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as the salts are useful as nootropics and antihypoxics.Type: GrantFiled: May 26, 1988Date of Patent: May 23, 1989Assignee: Boehringer Ingelheim KGInventors: Karl-Heinz Weber, Gerhard Walther, Claus Schneider, Dieter Hinzen, Franz J. Kuhn, Erich Lehr
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Patent number: 4812453Abstract: The invention relates to the use of 1-benzyl-aminoalkyl-pyrrolidinones as antidepressants.Type: GrantFiled: September 29, 1987Date of Patent: March 14, 1989Assignee: Boehringer Ingelheim KGInventors: Erich Lehr, Wolf-Dietrich Bechtel, Karin Boke-Kuhn, Claus Schneider, Gerhard Walther, Karl-Heinz Weber
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Patent number: 4767759Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms;R.sub.2 is 2-, 3- or 4-pyridyl, phenyl or mono- or di- substituted phenyl, where the substituents are each individually alkoxy of 1 to 2 carbon atoms, fluorine, chlorine, bromine, trifluoromethyl, alkyl or 1 to 4 carbon atoms, hydroxyl or nitro; andR.sub.3 and R.sub.4 are each independently hydrogen or alkyl of 1 to 4 carbon atoms; orR.sub.3 and R.sub.4, together with each other and the nitrogen atom to which they are attached, form an unsubstituted or methyl-substituted, saturated 5- or 6-membered heterocycle which may contain an additional oxygen or nitrogen heteroatom, or form an imidazole ring;where the aminomethyl substituent is attached to the 4- or 5-position or the pyrrolidine ring, and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as the salts are useful as nootropics and antihypoxics.Type: GrantFiled: June 26, 1986Date of Patent: August 30, 1988Assignee: Boehringer Ingelheim KGInventors: Karl-Heinz Weber, Gerhard Walther, Claus Schneider, Dieter Hinzen, Franz J. Kuhn, Erich Lehr
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Patent number: 4762832Abstract: The invention relates to new substituted pyrrolidinones of general formula ##STR1## wherein R.sub.1 represents a phenyl group which may be mono- or di-substituted by methyl, methoxy, fluorine, chlorine, bromine or trifluoromethyl, or a pyridyl group;R.sub.2 represents hydrogen or a straight-chained or branched alkyl group with 1-4 carbon atoms;R.sub.3 represents a straight-chained or branched alkyl group with 1-3 carbon atoms, a hydroxyalkyl group with 2-3 carbon atoms, a phenyl group which can be mono- or di-substituted by chlorine, bromine, methyl or methoxy, a cyclohexyl group or a dialkylamino alkyl group, where in each alkyl group can contain from 1-3 carbon atoms;R.sub.4 represents hydrogen or a straight-chained or branched alkyl group with 1-3 carbon atoms; orR.sub.3 and R.sub.Type: GrantFiled: December 18, 1986Date of Patent: August 9, 1988Assignee: Boehringer Ingelheim KGInventors: Karl-Heinz Weber, Claus Schneider, Gerhard Walther, Dieter Hinzen, Franz J. Kuhn, Erich Lehr, Helmut Ensinger, Wolfgang Troger
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Patent number: 4732900Abstract: New 1,2,4-triazolo-carbamates of general formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the meanings given in the specification, are acetylcholinesterase inhibitors and may be used as drugs for the treatment of senile dementia.Type: GrantFiled: October 25, 1985Date of Patent: March 22, 1988Assignee: Boehringer Ingelheim KGInventors: Karl-Heinz Weber, Dieter Hinzen, Franz-Josef Kuhn, Erich Lehr, Wilhelm Frolke, Wolfgang Troger, Helmut Ensinger, Gerhard Walther, Albrecht Harreus
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Patent number: 4686219Abstract: Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2, which may be identical to or different from each other, are each hydrogen, fluorine, chlorine, bromine, trifluoromethyl, hydroxyl, nitro, amino, cyano, methylsulfonamido, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 3 carbon atoms, (alkyl of 1 to 3 carbon atoms)thio or (alkanoyl of 2 to 4 carbon atoms)amino;R.sub.3 is hydrogen, fluorine, chlorine, bromine or alkyl of 1 to 3 carbon atoms;R.sub.Type: GrantFiled: February 7, 1986Date of Patent: August 11, 1987Assignee: Boehringer Ingelheim KGInventors: Gerhard Walther, Claus Schneider, Karl-Heinz Weber, Armin Fugner
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Patent number: 4670456Abstract: The invention relates to new substituted pyrrolidinones of general formula ##STR1## wherein R.sub.1 represents a phenyl group which may be mono- or di-substituted by methyl, methoxy, fluorine, chlorine, bromine or trifluoromethyl, or a pyridyl group;R.sub.2 represents hydrogen or a straight-chained or branched alkyl group with 1-4 carbon atoms;R.sub.3 represents a straight-chained or branched alkyl group with 1-3 carbon atoms, a hydroxyalkyl group with 2-3 carbon atoms, a phenyl group which can be mono- or di-substituted by chlorine, bromine, methyl or methoxy, a cyclohexyl group or a dialkylamino alkyl group, where in each alkyl group can contain from 1-3 carbon atoms;R.sub.4 represents hydrogen or a straight-chained or branched alkyl group with 1-3 carbon atoms; orR.sub.3 and R.sub.Type: GrantFiled: May 24, 1985Date of Patent: June 2, 1987Assignee: Boehringer Ingelheim KGInventors: Karl-Heinz Weber, Claus Schneider, Gerhard Walther, Dieter Hinzen, Franz J. Kuhn, Erich Lehr, Helmut Ensinger, Wolfgang Troger
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Patent number: 4666910Abstract: Compounds of the formula ##STR1## wherein one of R.sub.1 and R.sub.2 is hydrogen, halogen, methyl, methoxy, amino or nitro and the other is hydrogen; orR.sub.1 and R.sub.2 are both halogen;R.sub.3 is hydrogen, halogen or methyl;R.sub.4 and R.sub.5 are each independently hydrogen or alkyl or 1 to 2 carbon atoms; orR.sub.4 and R.sub.5, together with each other and the nitrogen atom to which they are attached, are pyrrolidino or morpholino; andX is --O--, --NH--, or --S--;and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful anti-depressants.Type: GrantFiled: August 28, 1984Date of Patent: May 19, 1987Assignee: Boehringer Ingelheim KGInventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn
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4-phenyl-tetrahydro-furano-pyridines and anti-depressant pharmaceutical compositions containing same
Patent number: 4636510Abstract: The invention relates to 4-phenyl-tetrahydro-furano-pyridines of the formulas ##STR1## wherein R.sup.1 to R.sup.5 are variously defined. The compounds of the invention are intended to be used as anti-depressants with, in particular, thymoleptic and central-stimulant properties.Type: GrantFiled: April 19, 1984Date of Patent: January 13, 1987Assignee: Boehringer Ingelheim KGInventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn -
Patent number: 4623646Abstract: The invention discloses a method of treating an individual having a disorder responsive to PAF-antagonist activity by treating the individual with a compound of formula I. ##STR1## wherein A is an anellated and optionally substituted benzene or 5- or 6- membered heterocyclic ring; R.sub.5 and Z are each independently hydrogen or an optionally substituted C.sub.1 -C.sub.8 alkyl, alkenyl or alkynyl; R.sub.6 is an optionally substituted phenyl, or is thienyl or .alpha.-pyridyl; Y is ##STR2## and nontoxic, pharmaceutically acceptable acid addition salts thereof.Type: GrantFiled: October 1, 1985Date of Patent: November 18, 1986Assignee: Boehringer Ingelheim KGInventors: Jorge Casals-Stenzel, Karl-Heinz Weber, Gerhard Walther, Albrecht Harreus, Gojko Muacevic
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Patent number: 4622319Abstract: The invention discloses a method of treating an individual having a disorder responsive to PAF-antagonist activity by treating the individual with a compound of formula I or II ##STR1## wherein A is an anellated and optionally substituted benzene or 5- or 6-membered heterocyclic ring; R.sub.5 and Z are each independently hydrogen or an optionally substituted C.sub.1 -C.sub.8 alkyl, alkenyl or alkynyl; R.sub.6 is an optionally substituted phenyl, or is thienyl or is .alpha.-pyridyl; Y is CO, CS or CH.sub.2 ; and nontoxic, pharmaceutically acceptable acid addition salts thereof.Type: GrantFiled: October 1, 1985Date of Patent: November 11, 1986Assignee: Boehringer Ingelheim KGInventors: Jorge Casals-Stenzel, Karl-Heinz Weber, Gerhard Walther, Albrecht Harreus, Gojko Muacevic
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Patent number: 4621083Abstract: The invention discloses a method of treating an individual having a disorder responsive to PAF-antagonist activity by treating the individual with a compound of formula I or II: ##STR1## wherein A is an annealed and optionally substituted benzene or 5- or 6-membered heterocyclic ring; B is an optionally substituted 5-membered heterocyclic ring; R.sub.5 and R.sub.7 are each independently hydrogen or an optionally substituted C.sub.1 -C.sub.8 alkyl, alkenyl or alkynyl; R.sub.6 is an optionally substituted phenyl, or is thienyl or .alpha.-pyridyl; and non-toxic, pharmaceutically acceptable acid addition salts thereof.Type: GrantFiled: October 1, 1985Date of Patent: November 4, 1986Assignee: Boehringer Ingelheim KGInventors: Jorge Casals-Stenzel, Karl-Heinz Weber, Gerhard Walther, Albrecht Harreus, Gojko Muacevic
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Patent number: 4581364Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms; andR.sub.2 is pyridyl, phenyl or mono-, di- or tri-substituted phenyl, where the substituents are alkyl of 1 to 2 carbon atoms, alkoxy of 1 to 2 carbon atoms, fluorine, chlorine, bromine, trifluoromethyl, nitro, benzyloxy or hydroxyl.The compounds are useful as nootropics.Type: GrantFiled: July 9, 1984Date of Patent: April 8, 1986Assignee: Boehringer Ingelheim KGInventors: Karl-Heinz Weber, Gerhard Walther, Claus Schneider, Dieter Hinzen, Franz J. Kuhn, Erich Lehr
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Patent number: 4550106Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is amino, acetylamino, hydroxymethyl, methoxymethyl or ##STR2## R.sub.2 and R.sub.3, which may be identical to or different from each other, are each hydrogen, fluorine, chlorine, bromine, trifluoromethyl, hydroxyl, methoxy, methyl or ethyl;R.sub.4 is straight or branched alkyl of 1 to 3 carbon atoms; andR.sub.5 and R.sub.6, which may be identical to or different from each other, are each hydrogen or alkyl of 1 to 4 carbon atoms or, together with each other and the nitrogen atom to which they are attached, form a 5-, 6- or 7-membered heterocyclic ring where, in the case of a 6-membered ring, a --CH.sub.2 -group in the ring may be replaced by an oxygen atom,and non-toxic, pharmacologically acceptable salts thereof. The compounds as well as their salts are useful as antidepressants.Type: GrantFiled: July 23, 1984Date of Patent: October 29, 1985Assignee: Boehringer Ingelheim KGInventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn
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Patent number: 4503060Abstract: Compounds of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each hydrogen, halogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms;R.sub.5 is hydrogen, alkyl of 1 to 6 carbon atoms or alkenyl of 3 to 6 carbon atoms;R.sub.6 is alkyl of 1 to 6 carbon atoms, alkenyl of 3 to 6 carbon atoms, phenyl, halo-phenyl, lower alkyl-phenyl, or lower alkoxy-phenyl or ##STR2## R.sub.7 and R.sub.8 are each hydrogen, halogen, alkyl of 1 to 6 carbon atoms or alkoxy or 1 to 6 carbon atoms;n is an integer from 0 to 4, inclusive;x is --O--, --S--, or --CH.sub.2 --; and the broken line between the 10 and 13b-positions indicates a single or double bond;and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as antiallergics and antithrombotics.Type: GrantFiled: August 20, 1982Date of Patent: March 5, 1985Assignee: Boehringer Ingelheim KGInventors: Gerhard Walther, Claus Schneider, Karl-Heinz Weber, Armin F/u/ gner
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Patent number: 4482559Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is amino, acetylamino, hydroxymethyl, methoxymethyl or ##STR2## R.sub.2 and R.sub.3, which may be identical to or different from each other, are each hydrogen, fluorine, chlorine, bromine, trifluoromethyl, hydroxyl, methoxy, methyl or ethyl;R.sub.4 is straight or branched alkyl of 1 to 3 carbon atoms; andR.sub.5 and R.sub.6, which may be identical to or different from each other, are each hydrogen or alkyl of 1 to 4 carbon atoms or, together with each other and the nitrogen atom to which they are attached, form a 5-, 6- or 7-membered heterocyclic ring where, in the case of a 6-membered ring, a --CH.sub.2 -group in the ring may be replaced by an oxygen atom, and non-toxic, pharmacologically acceptable salts thereof. The compounds as well as their salts are useful as antidepressants.Type: GrantFiled: February 14, 1983Date of Patent: November 13, 1984Assignee: Boehringer Ingelheim KGInventors: Claus Schneider, Gerhard Walther, Karl-Heinz Weber, Wolf D. Bechtel, Karin Boke-Kuhn
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Patent number: 4333829Abstract: The present invention is concerned with an apparatus for removing foreign matter from the top surface of water, for use with aquaria, which comprises a discharge tube stationarily disposed in the aquarium and having its upper opening rim below the water surface, in which tube is disposed another tube open at the top and bottom and provided with a float in the upper end region.Type: GrantFiled: July 9, 1980Date of Patent: June 8, 1982Inventor: Gerhard Walther
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Patent number: 4315938Abstract: Compounds of the formula ##STR1## wherein R.sub.2 is hydrogen, chlorine, bromine, formyl, acetyl, alkyl of 1 to 4 carbon atoms, nitro, cyano or --CH.sub.2 --A;whereA is (alkyl of 1 to 2 carbon atoms)-amino; di(alkyl of 1 to 2 carbon atoms)-amino, where one of the alkyl moieties may have a terminal hydroxyl substituent attached thereto; or a 5-, 6- or 7-membered saturated, nitrogen-containing heterocycle which is attached to the methylene group through the nitrogen atom and may have a hydroxyl or hydroxymethyl substituent attached to a ring carbon atom, and the 6-membered heterocycle may contain oxygen as an additional ring heteroatom in the p-position;R.sub.3 is hydrogen, fluorine, chlorine, bromine, methyl or methoxy; andR.sub.4 is hydrogen or alkyl of 1 to 3 carbon atoms;and non-toxic, pharmacologically acceptable acid addition salts thereof. The compounds as well as their salts are useful as antidepressants.Type: GrantFiled: June 30, 1980Date of Patent: February 16, 1982Assignee: Boehringer Ingelheim GmbhInventors: Claus Schneider, Karl-Heinz Weber, Gerhard Walther, Karin Boke, Wolf D. Bechtel