Patents by Inventor Gerard R. Le Fur

Gerard R. Le Fur 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: 4711890
    Abstract: Compounds of the formula: ##STR1## in which R.sub.1 is C.sub.1-6 alkyl, phenyl, C.sub.3-6 cycloalkyl, phenylalkyl, cycloalkyl-alkyl or ##STR2## R.sub.3 and R.sub.4 being H or alkyl, R.sub.5 being alkenyl or alkynyl, and the sum of the carbon atoms in R.sub.3, R.sub.4 and R.sub.5 being 2 to 5, R.sub.2 is as defined for R.sub.1 and may also represent ##STR3## in which n is 0, 1, 2 or 3, it also being possible for R.sub.1 and R.sub.2 to form, with the nitrogen atom to which they are attached, a 5-, 6- or 7-membered heterocyclic radical which can contain another hetero-atom chosen from O and N and which can carry 1 or 2 substituents, Z is phenyl, pyridinyl, thienyl, thiazol-2-yl or substituted phenyl, X and R.sub.0 are H, halogen, C.sub.1-3 alkyl, C.sub.1-3 alkoxy, nitro or CF.sub.3, A represents N or CH and E represents N or CH, some of which are known compounds, are therapeutically useful compounds useful in the treatment of anxiety states or of pulmonary, renal, circulatory or cardiovascular disorders.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: December 8, 1987
    Assignee: Rhone-Poulenc Sante
    Inventors: Marie-Christine Dubroeucq, Gerard R. Le Fur, Christian L. A. Renault
  • Patent number: 4684652
    Abstract: Compounds of the formula: ##STR1## in which R.sub.1 is C.sub.1-6 alkyl, phenyl, C.sub.3-6 cycloalkyl, phenylalkyl, cycloalkyl-alkyl or ##STR2## R.sub.3 and R.sub.4 being H or alkyl, R.sub.5 being alkenyl or alkynyl, and the sum of the carbon atoms in R.sub.3, R.sub.4 and R.sub.5 being 2 to 5, R.sub.2 is as defined for R.sub.1 and may also represent ##STR3## in which n is 0, 1, 2 or 3, it also being possible for R.sub.1 and R.sub.2 to form, with the nitrogen atom to which they are attached, a 5-, 6- or 7-membered heterocyclic radical which can contain another hetero-atom chosen from O and N and which can carry 1 or 2 substituents, Z is phenyl, pyridinyl, thienyl, thiazol-2-yl or substituted phenyl, X and R.sub.0 are H, halogen, C.sub.1-3 alkyl, C.sub.1-3 alkoxy, nitro or CF.sub.3, A represents N or CH and E represents N or CH, some of which are known compounds, are therapeutically useful compounds useful in the treatment of anxiety states or of pulmonary, renal, circulatory or cardiovascular disorders.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: August 4, 1987
    Assignee: Rhone-Poulenc Sante
    Inventors: Marie-Christine Dubroeucq, Gerard R. Le Fur, Christian L. A. Renault
  • Patent number: 4535080
    Abstract: Compounds are disclosed as useful as drugs or as intermediates for the manufacture of drugs, the compounds having the formula: ##STR1## in which X is hydrogen, chlorine, alkyl, alkoxy or alkylthio having 1 to 3 carbon atoms, R.sub.2 is hydrogen or alkyl having 1 to 3 carbon atoms, Y.sub.2 is chlorine and Y.sub.1 is chlorine or ##STR2## in which R.sub.1 is hydrogen, straight or branched chain alkyl having 1 to 7 carbon atoms, cycloalkyl having 3 to 7 carbon atoms or cycloalkylalkyl having 4 to 8 carbon atoms, or Y.sub.2 and Y.sub.1 are both OH. Also disclosed are methods for preparation of the compounds.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: August 13, 1985
    Assignee: Pharmuka Laboratoires
    Inventors: Francois Audiau, Claude G. A. Gueremy, Gerard R. Le Fur
  • Patent number: 4505916
    Abstract: Compounds, useful as medicaments, of the formula: ##STR1## in which R is hydrogen, alkyl, alkenyl or arylalkyl, R.sub.1 is hydrogen, alkyl or alkenyl, R.sub.2 is hydrogen, alkyl, arylalkyl, phenyl, pyridyl, thienyl or substituted phenyl, X is hydrogen, halogen, alkyl, alkoxy, alkylthio, trifluoromethyl, nitro, amino or amino substituted by one or two alkyl groups, and A represents a CO or CH.sub.2 group.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: March 19, 1985
    Assignee: Pharmindustrie
    Inventors: Alain A. Champseix, Gerard R. Le Fur, Christian L. A. Renault
  • Patent number: 4493838
    Abstract: Compounds useful as medicaments, particularly useful as a hypnotic, an anticonvulsant and for the treatment of anxiety states and psychoneurotic states of the formula: ##STR1## in which X is hydrogen, halogen, alkyl containing 1 to 4 carbon atoms, alkoxy containing 1 to 4 carbon atoms or alkylthio containing 1 to 4 carbon atoms, one of the substituents R.sub.1 and R.sub.2 is hydrogen, alkyl containing 1 to 4 carbon atoms, phenyl or phenyl substituted by halogen, alkyl containing 1 to 4 carbon atoms, alkoxy containing 1 to 4 carbon atoms, alkylthio containing 1 to 4 carbon atoms, trifluoromethyl, nitro, unsubstituted amino or amino substituted by one or two alkyl containing 1 to 2 carbon atoms, and the other of the substituents R.sub.1 and R.sub.2 is a group of the formula: ##STR2## in which n is 1, 2 or 3 and R is hydrogen or alkyl containing 1 to 4 carbon atoms.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: January 15, 1985
    Assignee: Pharmindustrie
    Inventors: Alain A. Champseix, Gerard R. Le Fur
  • Patent number: 4478841
    Abstract: Compounds of general formula: ##STR1## wherein X represents a hydrogen or halogen atom, R represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms and A represents the 1,2,5,6-tetrahydro-4-pyridyl or the 1,2,3,4,5,6-hexahydro-4-pyridyl radical, with the proviso that when A is the 1,2,3,4,5,6-hexahydro-4-pyridyl radical, R is alkyl having 1 to 3 carbon atoms, are disclosed together with methods for their preparation and their use in the treatment of migraines, as antithrombosis agents or as rapid acting thymoanaleptic medicaments.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: October 23, 1984
    Assignee: Pharmuka Laboratoires
    Inventors: Francois Audiau, Gerard R. Le Fur
  • Patent number: 4435410
    Abstract: Compounds of the general formula: ##STR1## in which X represents a hydrogen or halogen atom, for example fluorine or chlorine, and R represents an alkyl group having 1 to 3 carbon atoms or alkenyl group having 2 to 3 carbon atoms are disclosed together with methods for their preparation and their use in the treatment of migraines, as anti-thrombosis agents or as rapid acting thymoanaleptic medicaments.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: March 6, 1984
    Assignee: Pharmindustrie
    Inventors: Gerard R. Le Fur, Christian L. A. Renault
  • Patent number: 4433150
    Abstract: Compounds, useful as medicaments, of the formula: ##STR1## in which R is hydrogen, alkyl, alkenyl or arylalkyl, R.sub.1 is hydrogen, alkyl or alkenyl, R.sub.2 is hydrogen, alkyl, arylalkyl, phenyl, pyridyl, thienyl or substituted phenyl, X is hydrogen, halogen, alkyl, alkoxy, alkylthio, trifluoromethyl, nitro, amino or amino substituted by one or two alkyl groups, and A represents a CO or CH.sub.2 group.
    Type: Grant
    Filed: December 2, 1980
    Date of Patent: February 21, 1984
    Assignee: Pharmindustrie
    Inventors: Alain A. Champseix, Gerard R. Le Fur, Christian L. A. Renault
  • Patent number: 4416888
    Abstract: Compounds of the general formula; ##STR1## wherein R represents an alkyl group having 1 to 3 carbon atoms and X represents a hydrogen or halogen atom are disclosed together with methods for their preparation and their use in the treatment of migraines, as anti-thrombosis agents or as rapid acting thymoanaleptic medicaments.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: November 22, 1983
    Assignee: Pharmindustrie
    Inventors: Gerard R. Le Fur, Francois Audiau
  • Patent number: 4416898
    Abstract: A method for the treatment of degenerative diseases such as Parkinsonism and aging by the administration of a pharmaceutically effective amount of L-methionine or DL-methionine.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: November 22, 1983
    Assignee: Pharmuka Laboratoires
    Inventor: Gerard R. Le Fur
  • Patent number: 4405789
    Abstract: Compounds useful as medicaments, of the formula: ##STR1## in which X is hydrogen, halogen, alkyl containing 1 to 4 carbon atoms, alkoxy containing 1 to 4 carbon atoms or alkylthio containing 1 to 4 carbon atoms, one of the substituents R.sub.1 and R.sub.2 is hydrogen, alkyl containing 1 to 4 carbon atoms, phenyl or phenyl substituted by halogen, alkyl containing 1 to 4 carbon atoms, alkoxy containing 1 to 4 carbon atoms, alkylthio containing 1 to 4 carbon atoms, trifluoromethyl, nitro, unsubstituted amino or amino substituted by one or two alkyl containing 1 to 2 carbon atoms, and the other of the substituents R.sub.1 and R.sub.2 is a group of the formula: ##STR2## in which n is 1, 2 or 3 and R is hydrogen or alkyl containing 1 to 4 carbon atoms.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: September 20, 1983
    Assignee: Pharmindustrie
    Inventors: Alain A. Champseix, Gerard R. Le Fur
  • Patent number: 4402961
    Abstract: Compounds, useful as medicaments, of the formula: ##STR1## in which R is fixed in position 2 or 4 on the cycle of the quinoline and indicates a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, pyridyl, thienyl, phenyl or substituted phenyl group, X is fixed in position 5, 6, 7 or 8 on the cycle of the quinoline and indicates a hydrogen or halogen atom or an alkyl, alkoxy or alkylthio group containing 1 to 4 carbon atoms or CF.sub.3 group, R.sub.1 is a hydrogen atom or an alkyl containing 1 to 4 carbon atoms, alkenyl containing 3 to 4 carbon atoms or arylalkyl group, A is a CO, CHOH, or CH.sub.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: September 6, 1983
    Assignee: Pharmindustrie
    Inventors: Marie-Christine Dubroeucq, Claude G. A. Gueremy, Gerard R. Le Fur, Jacques Mizoule
  • Patent number: 4357337
    Abstract: Compounds, which can be used as medicaments, of the formula: ##STR1## in which n is 1, 2 ore 3, X is fixed in position 4, 5, 6 or 7 on the cycle ##STR2## and represents a hydrogen atom or a halogen atom or an alkyl, alkoxy or alkylthio group having 1 to 4 carbon atoms, the ##STR3## is fixed in position 2 or 3 on the cycle ##STR4## and the broken line represents a second possible bond, are disclosed for the treatment of states of depression, as analgesics and anti-migraine substances.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: November 2, 1982
    Assignee: Pharmindustrie
    Inventors: Marie-Christine Dubroeucq, Claude G. A. Gueremy, Christian L. A. Renault, Gerard R. Le Fur
  • Patent number: 4299835
    Abstract: Pharmaceutical preparations containing as active ingredient a compound having the formula: ##STR1## wherein R represents hydrogen, alkyl having 1 to 4 carbon atoms or alkenyl having 2 to 4 carbon atoms; andX represents hydrogen, alkyl, alkoxy or alkylthio, the alkyl groups of each containing 1 to 4 carbon atoms, halogen (chlorine, fluorine, bromine or iodine), trifluoromethyl, nitro, hydroxy, amino or amino substituted by one or two alkyl groups or by acyl or alkylsulphonyl, the alkyl groups of each containing 1 to 4 carbon atoms, which are particularly advantageous for the treatment of pathological states caused by a disturbance in the functioning of the serotoninergical systems in mammals. These preparations may also be used as anxiolytics.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: November 10, 1981
    Assignee: Pharmindustrie
    Inventors: Alain A. Champseix, Claude G. A. Gueremy, Gerard R. Le Fur
  • Patent number: 4294841
    Abstract: A drug useful as antiarhythmic, antidepressant and anxiolytic containing as an active agent a compound of the formula ##STR1## wherein X and Y are the same or different and represent hydrogen or halogen atoms, or 1-4C alkyl groups, 1-4C alkoxy groups, 1-4C alkylthio groups, CF.sub.3, OH, NH.sub.2, 1-4C monoalkylamino or amino groups substituted by a 1-4C alkylsulfonyl group, a 1-5C alkylcarbonyl group or an aroyl group and A is a CO, CHOH or CH.sub.2 group, or a salt of said compound with a pharmaceutically acceptable acid, is disclosed together with methods for the preparation thereof and its use in human therapy.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: October 13, 1981
    Assignee: Pharmindustrie
    Inventors: Alain A. Champseix, Gerard R. Le Fur
  • Patent number: 4237139
    Abstract: Pharmaceutical preparations containing as active ingredient a compound having the formula: ##STR1## wherein R represents hydrogen, alkyl having 1 to 4 carbon atoms or alkenyl having 2 to 4 carbon atoms; andX represents hydrogen, alkyl, alkoxy or alkylthio, the alkyl groups of each containing 1 to 4 carbon atoms, halogen (chlorine, fluorine, bromine or iodine), trifluoromethyl, nitro, hydroxy, amino or amino substituted by one or two alkyl groups or by acyl or alkylsulphonyl, the alkyl groups of each containing 1 to 4 carbon atoms, which are particularly advantageous for the treatment of pathological states caused by a disturbance in the functioning of the serotoninergical systems in mammals. These preparations may also be used as anxiolytics.
    Type: Grant
    Filed: December 12, 1978
    Date of Patent: December 2, 1980
    Assignee: Pharmindustrie
    Inventors: Alain A. Champseix, Claude G. A. Gueremy, Gerard R. Le Fur