Patents by Inventor Jean-Claude Bourbier

Jean-Claude Bourbier 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).

  • Pyridone derivatives, their preparation and their use as synthesis intermediates
    Patent number: 6252082
    Abstract: The invention concerns compounds of formula (I) in which: R is —NO2 or —NHR3, R3 being hydrogen, —COR4 (R4 selected among (C1-C4) alkyl, aryl and aryl (C1-C4) alkyl, —COOR5 (R5 selected among (C1-C4) alkyl and aryl (C1-C4) alkyl), —CONHR6 or SO2R6 (R6 selected among (C1-C5) alkyl, aryl and aryl(C1-C4) alkyl), —SO2NR7R8 (R7 and R8 independently of each other represent hydrogen or (C1-C4) alkyl or form with the nitrogen atom a morpholine group), aryl (C1-C4) alkyl, R1 is a (C1-C4) alkyl group linear or branched, cyclo (C3-C8) alkyl, aryl optionally substituted, aryl (C1-C4) alkyl optionally substituted, heteroaryl, R2 is a hydrogen atom, a (C1-C4) alkyl or arylmethyl group, X is an oxygen or sulphur atom, a —CH2—, —SO2 or —NR1— group and Y is a hydrogen atom or (C1-C6) alkyl. The invention is applicable to synthesis intermediates.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: June 26, 2001
    Assignee: Sanofi-Synthelabo
    Inventors: Gilbert Lassalle, Patrice Bellevergue, Jean-Claude Bourbier, Daniel Galtier, Valérie Martin