Patents by Inventor Guy Rossey

Guy Rossey 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).

  • Preparation of diphenylazomethines
    Patent number: 4638080
    Abstract: Process for preparing diphenylazomethines of formula (II) ##STR1## by decarboxylation of diphenylazomethines of formula (I) ##STR2## in which X.sub.1 and X.sub.2 each denote, independently of each other, a hydrogen atom or a halogen atom or a methyl radical,R.sub.1 is H or linear or branched (C.sub.1-4) alkyl radical,R.sub.2 is the radical COOH, a linear or branched (C.sub.1-4) alkyl radical, the radical CONH.sub.2 or a linear or branched COO(C.sub.1-4) alkyl radical, andR.sub.3 denotes a hydrogen atom or the methyl radical.
    Type: Grant
    Filed: February 25, 1986
    Date of Patent: January 20, 1987
    Assignee: Synthelabo
    Inventors: Bernard Raizon, Guy Rossey, Alexander Wick
  • Synthesis of vincaminic acid derivatives
    Patent number: 4316029
    Abstract: Vincaminic acid derivatives of formula (A) ##STR1## useful in treating cerebral insufficiency, are prepared by reacting 1-ethyl-2,3,4,6,7,12-hexahydroindolo[2,3-a]quinolizine with the 2,4-DNP hydrazone of ethyl or methyl bromopyruvate followed by (i) reduction of the C.dbd.N bond and (ii) simultaneous cyclization with removal of the ketone-protecting group in either order.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: February 16, 1982
    Assignee: Synthelabo
    Inventor: Guy Rossey
  • N-benzyl-2,2-dimethoxy-acetamides
    Patent number: 4041077
    Abstract: N-benzyl-2,2-dimethoxy-acetamides having the formula ##STR1## and processes for preparing the same. These acetamides are useful for the production of 2H-3-isoquinolones by acid cyclization and said 2H-3-isoquinolones are in turn useful as starting materials inter alia in the synthesis of 1,4-dihydro-1,4-etheno-isoquinolin-3(2H)ones, which are valuable chemotherapeutic agents as disclosed in U.S. Pat. No. 3,781,436.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: August 9, 1977
    Assignee: U C B, Societe Anonyme
    Inventors: Leon Ghosez, Guy Rossey, Freddy Didderen