Patents by Inventor Emmanuel Gras

Emmanuel Gras 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).

  • Total synthesis of galanthamine, analogues and derivatives thereof
    Patent number: 7109327
    Abstract: The invention relates to a method for the synthesis of galanthamifle, the derivatives and analogues thereof of formula (1) where R1=a hydrogen atom.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: September 19, 2006
    Assignee: Centre National de la Recherche Scientifique (CNRS)
    Inventors: Claude Thal, Catherine Guillou, Jean-Luc Beunard, Emmanuel Gras, Pierre Potier
  • Total synthesis of galanthamine, analogues and derivatives thereof
    Publication number: 20050065338
    Abstract: The invention relates to a method for the synthesis of galanthamine, the derivatives and analogues thereof of formula (1) where R1=a hydrogen atom. R2=a hydroxy group, R1 and R2 together form =0, R3, R4, and R5 independently=a hydrogen atom, a hydroxy group or a (C1-C2) alkoxy group, R6-11 , (C1-C12) alkyl, (CH2)nNR7R8, or —(CH2)nN?R7R8R9 where n?1 to 12 Z=two hydrogen atoms, or an oxygen atom and X=an oxygen, sulphur or nitrogen atom, or a —SO, —SO2, or —NR6 group where R6 is as defined above or is an amine protecting group.
    Type: Application
    Filed: June 14, 2002
    Publication date: March 24, 2005
    Inventors: Claude Thal, Catherine Guillou, Jean-Luc Beunard, Emmanuel Gras, Pierre Potier
  • Process for producing substituted epoxides
    Publication number: 20040082799
    Abstract: A process for preparing a substituted epoxide of the formula: 1
    Type: Application
    Filed: November 5, 2003
    Publication date: April 29, 2004
    Inventors: David M. Hodgson, Stephanie Lydia Madeleine Norsikian, Iain Donald Cameron, Emmanuel Gras
  • Total synthesis of galanthamine, analogues and derivatives thereof
    Patent number: RE41366
    Abstract: The invention relates to a method for the synthesis of galanthamine, the derivatives and analogues thereof of formula (1) where R1=a hydrogen atom, R2=a hydroxy group, R1 and R2 together form ?O, R3, R4, and R5 independently=a hydrogen atom, a hydroxy group or a (C1-C2)alkoxy group, R6?H, (C1-C12)alkyl, (CH2)nNR7R8, or —(CH2)nN+R7R8R9 where n=1 to 12, Z=two hydrogen atoms, or an oxygen atom and X=an oxygen, sulphur or nitrogen atom, or a —SO, —SO2, or —NR6 group where R6 is as defined above or is an amine protecting group.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: June 1, 2010
    Assignee: Centre National del la Recherche Scientifique (CNRS)
    Inventors: Claude Thal, Catherine Guillou, Jean-Luc Beunard, Emmanuel Gras, Pierre Potier