Patents by Inventor Christian Masson

Christian Masson 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).

  • Method for the production of 1,4-benzothiepin-1,1-dioxide derivatives
    Patent number: 8461312
    Abstract: The invention relates to a method for producing 1,4-benzothiepin-1,1-dioxide derivatives substituted with benzyl groups.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: June 11, 2013
    Assignee: Sanofi
    Inventors: Guenter Billen, Wendelin Frick, John Patrick Larkin, Guy Lemaitre, Francoise Bendetti, Philippe Boffelli, Jean-Yves Godard, Christian Masson, Veronique Crocq, Sylvaine Lafont, Jos Hulshof
  • METHOD FOR THE PRODUCTION OF 1,4-BENZOTHIEPIN-1,1-DIOXIDE DERIVATIVES
    Publication number: 20110245486
    Abstract: The invention relates to a method for producing 1,4-benzothiepin-1,1-dioxide derivatives substituted with benzyl groups.
    Type: Application
    Filed: April 29, 2009
    Publication date: October 6, 2011
    Applicant: SANOFI-AVENTIS DEUTSCHLAND GMBH
    Inventors: Guenter Billen, Wendelin Frick, John Patrick Larkin, Guy Lemaitre, Francoise Bendetti, Philippe Boffelli, Jean-Yves Godard, Christian Masson, Veronique Crocq, Sylvaine Lafont, Jos Hulshof
  • Process for the preparation of 20-keto-21 alpha-01-steroids
    Patent number: 5399685
    Abstract: A process for the preparation of a compound of the formula ##STR1## wherein R.sub.1 is alkyl of 1 to 3 carbon atoms, R.sub.2 is alkyl of 1 to 12 carbon atoms, R.sub.3 is alkyl of 1 to 4 carbon atoms comprising reacting a compound of the formula ##STR2## wherein R.sub.4 is a remainder of an easily cleavable ether, K is a protected ketone function in the form of ketal, thioketal or mixed ketal and R.sub.1 has the above definition with a magnesium organic compound reagent of the formulaHalMg--CH.sub.2 --R.sub.2 Awherein Hal is a halogen and R.sub.2 is defined as above to obtain a compound of the formula ##STR3## wherein R.sub.1, R.sub.2 and K are defined as above, reacting the latter with an acylation agent to obtain a compound of the formula ##STR4## wherein R.sub.5 is alkyl of 1 to 6 carbon atoms or aryl of 6 to 10 carbon atoms and R.sub.1, R.sub.2 and K are defined as above, reacting the latter with an appropriate alkylation agent to obtain a compound of the formula ##STR5## wherein R.sub.1, R.sub.2, R.sub.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: March 21, 1995
    Assignee: Roussel-Uclaf
    Inventors: Jean Buendia, Veronique Crocq, Christian Masson, Denis Prat, Michel Vivat