Patents by Inventor Michel Bernatchez

Michel Bernatchez 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).

  • Publication number: 20090192311
    Abstract: The present invention is directed to crystal and amorphous forms of the 5-HT1A receptor antagonist 4-cyano-N-{(2R)-2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yl)-piperazin-1-yl]-propyl}-N-pyridin-2-yl-benzamide hydrochloride, as well as compositions thereof and methods of using the same.
    Type: Application
    Filed: February 3, 2009
    Publication date: July 30, 2009
    Inventors: Eric N.C. Browne, Michel Bernatchez, Mark Lankau, Abdolsamad Tadayon, Anthony F. Hadfield
  • Publication number: 20090099376
    Abstract: Methods of preparing and purifying 9-nitrominocycline and 9-aminominocycline and salts thereof used in the process of making tigecycline, are disclosed. In one embodiment, the invention is directed to a method of preparing the compound of formula 1 or a pharmaceutically acceptable salt thereof, comprising: (a) reacting nitric acid with the compound of formula 2, or a salt thereof, to produce a reaction mixture comprising an intermediate; and (b) further reacting the intermediate to form the compound of formula 1, wherein the intermediate is isolated from the reaction mixture, the method further comprising sparging with an inert gas prior to step (a).
    Type: Application
    Filed: October 15, 2008
    Publication date: April 16, 2009
    Applicant: Wyeth
    Inventors: Michel Bernatchez, Warren Chew, Sylvain Daigneault, Ernest Palus, Mahmoud Mirmehrabi, Luc Bouchard
  • Publication number: 20080161575
    Abstract: The present invention provides a process for the preparation of 6-amino-4-(3-chloro-4-fluoro-phenylamino)-7-ethoxy-quinoline-3-carbonitrile comprising the steps and products disclosed within this application.
    Type: Application
    Filed: March 10, 2008
    Publication date: July 3, 2008
    Applicant: Wyeth
    Inventors: Sylvain Daigneault, Ronald Stanley Michalak, Michel Bernatchez
  • Patent number: 7365203
    Abstract: The present invention provides a process for the preparation of 6-amino-4-(3-chloro-4-fluoro-phenylamino)-7-ethoxy-quinoline-3-carbonitrile comprising the steps and products disclosed within this application.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: April 29, 2008
    Assignee: Wyeth
    Inventors: Sylvain Daigneault, Ronald Stanley Michalak, Michel Bernatchez
  • Patent number: 7294740
    Abstract: The invention claimed herein provides a process to oxidize N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamides to N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids using potassium permanganate in the presence of magnesium sulfate in aqueous sulfolane or aqueous pyridine.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: November 13, 2007
    Assignee: Wyeth
    Inventors: Scott Mason Duncan, Augustine Tobi Osuma, Sylvain Daigneault, Michel Bernatchez
  • Publication number: 20070255065
    Abstract: The present invention relates to methods for synthesizing compounds of formula I or pharmaceutically acceptable salts thereof: wherein each of R1, R2, R3, R4, x, m, n, and Ar are as defined, and described in classes and subclasses herein, which are agonists or partial agonists of the 2C subtype of brain serotonin receptors.
    Type: Application
    Filed: April 18, 2007
    Publication date: November 1, 2007
    Applicant: Wyeth
    Inventors: Qing Yu, Michel Bernatchez, Rocco Galante
  • Publication number: 20070219394
    Abstract: The invention claimed herein provides a process to oxidize N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamides to N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids using potassium permanganate in the presence of magnesium sulfate in aqueous sulfolane or aqueous pyridine.
    Type: Application
    Filed: May 18, 2007
    Publication date: September 20, 2007
    Applicant: Wyeth
    Inventors: Scott Duncan, Augustine Osuma, Sylvain Daigneault, Michel Bernatchez
  • Patent number: 7227037
    Abstract: The invention claimed herein provides a process to oxidize N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamides to N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids using potassium permanganate in the presence of magnesium sulfate in aqueous sulfolane or aqueous pyridine.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: June 5, 2007
    Assignee: Wyeth
    Inventors: Scott Mason Duncan, Augustine Tobi Osuma, Sylvain Daigneault, Michel Bernatchez
  • Publication number: 20070099931
    Abstract: The invention relates to, for example, novel formulations and methods for the delivery of 4-cyano-N-{(2R)—2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yl)-piperazin-1-yl]-propyl}-N-pyridin-2-yl-benzamide, pharmaceutically acceptable salts thereof, structurally related compounds and/or metabolites; as well as to use of these formulations and methods for treating disease.
    Type: Application
    Filed: September 6, 2006
    Publication date: May 3, 2007
    Applicant: Wyeth
    Inventors: Krishnendu Ghosh, Arwinder Nagi, Xiaohong Pan, Melissa Lin, Leonid Linberg, Ping Cai, Eric Browne, Michel Bernatchez, Mark Lankau, Sangeeta Raje
  • Publication number: 20070049560
    Abstract: Methods of preparing and purifying tetracyclines, such as tigecycline, are disclosed. Also disclosed are tetracycline compositions, such as tigecycline compositions, prepared by these methods.
    Type: Application
    Filed: May 25, 2006
    Publication date: March 1, 2007
    Inventors: Lalitha Krishnan, Phaik-Eng Sum, Sylvain Daigneault, Michel Bernatchez, Anthony Pilcher, Jeffrey Horne, Adam Tuper, Joseph McCauley, Adam Michaud
  • Publication number: 20070049561
    Abstract: Methods of preparing and purifying tetracyclines, such as tigecycline, are disclosed. Also disclosed are tetracycline compositions, such as tigecycline compositions, prepared by these methods.
    Type: Application
    Filed: May 25, 2006
    Publication date: March 1, 2007
    Inventors: Lalitha Krishnan, Phaik-Eng Sum, Sylvain Daigneault, Michel Bernatchez, Anthony Pilcher, Jeffrey Horne, Adam Tuper, Joseph McCauley, Adam Michaud
  • Publication number: 20070049562
    Abstract: Methods of preparing and purifying tetracyclines, such as tigecycline, are disclosed. Also disclosed are tetracycline compositions, such as tigecycline compositions, prepared by these methods.
    Type: Application
    Filed: May 25, 2006
    Publication date: March 1, 2007
    Inventors: Lalitha Krishnan, Phaik-Eng Sum, Sylvain Daigneault, Michel Bernatchez, Anthony Pilcher, Jeffrey Horne, Adam Tuper, Joseph McCauley, Adam Michaud
  • Publication number: 20070049563
    Abstract: Methods of preparing and purifying tetracyclines, such as tigecycline, are disclosed. Also disclosed are tetracycline compositions, such as tigecycline compositions, prepared by these methods.
    Type: Application
    Filed: May 25, 2006
    Publication date: March 1, 2007
    Inventors: Lalitha Krishnan, Phaik-Eng Sum, Sylvain Daigneault, Michel Bernatchez, Anthony Pilcher, Jeffrey Horne, Adam Tuper, Joseph McCauley, Adam Michaud
  • Publication number: 20070027162
    Abstract: The present invention is directed to crystal and amorphous forms of the 5-HT1A receptor antagonist 4-cyano-N-{(2R)-2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yl)-piperazin-1-yl]-propyl}-N-pyridin-2-yl-benzamide hydrochloride, as well as compositions thereof and methods of using the same.
    Type: Application
    Filed: February 27, 2006
    Publication date: February 1, 2007
    Applicant: Wyeth
    Inventors: Eric Browne, Michel Bernatchez, Mark Lankau, Abdolsamad Tadayon, Anthony Hadfield
  • Publication number: 20060252825
    Abstract: The present invention is directed to crystalline forms of the 5-HT2C agonist {[(2R)-7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine hydrochloride, as well as compositions, processes of preparation, and uses thereof.
    Type: Application
    Filed: April 21, 2006
    Publication date: November 9, 2006
    Applicant: Wyeth
    Inventors: Abdolsamad Tadayon, Qing Yu, Michel Bernatchez
  • Publication number: 20050215561
    Abstract: This invention relates to, for example, novel formulations and methods for the delivery of 4-cyano-N-{(2R)-2-[4-(2,3-dihydro-benzo[1,4]dioxin-5yl)-piperazin-1-yl]-propyl}-N-pyridin-2-yl-benzamide, pharmaceutically acceptable salts thereof, structurally related compounds and/or metabolites; as well as to use of these formulations and methods for treating disease.
    Type: Application
    Filed: March 17, 2005
    Publication date: September 29, 2005
    Inventors: Krishnendu Ghosh, Arwinder Nagi, Xiaohong Pan, Melissa Lin, Leonid Linberg, Ping Cai, Eric Browne, Michel Bernatchez, Mark Lankau
  • Publication number: 20050085662
    Abstract: The invention claimed herein provides a process to oxidize N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamides to N-acyl-2-amino-4-alkoxy-5-nitrobenzoic acids using potassium permanganate in the presence of magnesium sulfate in aqueous sulfolane or aqueous pyridine.
    Type: Application
    Filed: February 5, 2003
    Publication date: April 21, 2005
    Applicant: Wyeth
    Inventors: Scott Duncan, Augustine Osuma, Sylvain Daigneault, Michel Bernatchez
  • Publication number: 20050065181
    Abstract: The present invention provides a process for the preparation of 6-amino-4-(3-chloro-4-fluoro-phenylamino)-7-ethoxy-quinoline-3-carbonitrile comprising the steps and products disclosed within this application.
    Type: Application
    Filed: September 10, 2004
    Publication date: March 24, 2005
    Applicant: Wyeth
    Inventors: Sylvain Daigneault, Ronald Michalak, Michel Bernatchez
  • Patent number: 5977372
    Abstract: This application discloses a process for producing 8-[2'-(2(1)-tert-butyl-2H-tetrazol-5-yl) -biphenyl-4-yl-methyl]-2,4-dimethyl-5,8-dihydro-6H-pyrido[2,3-d]pyrimidin- 7-one (or such a compound wherein a benzyl or p-methoxybenzyl group is present in place of the tert-butyl group) or a salt thereof, said process characterized in(B) transmetallizing bromo[2-[2-(tert-butyl)-2H-tetrazol-5-yl]phenyl]magnesium Grignard reagent with zinc chloride or bromide; and(C) reacting the transmetallized product with 8-[(4-bromophenyl)-methyl]5,8-dihydro-2,4-dimethyl-pyrido[2,3-d]pyrimidin- 7(6H-one in the presence of a palladium catalyst to yield the product;wherein throughout the process a benzyl or p-methoxybenzyl group may be present in place of the tert-butyl group.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: November 2, 1999
    Assignee: American Home Products Corporation
    Inventors: Pierre Giguere, Silvio Iera, Michel Bernatchez
  • Patent number: 5760220
    Abstract: A process is described for preparing a compound of the formula I: ##STR1## or a salt thereof; wherein X is a protecting group and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently hydrogen, C.sub.1-6 alkyl or C.sub.1-6 perfluoroalkyl, R.sub.5 is hydrogen or when n is 1 R.sub.5 taken together with R.sub.3 comprises a double bond; m is 1, 2 or 3; n is 0 or 1, and p is 0, 1 or 2.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: June 2, 1998
    Assignee: American Home Products Corporation
    Inventors: Pierre Giguere, Silvio Iera, Michel Bernatchez, Giuseppe Barreca, Graziano Castaldi, Vincenzo Cannata