Patents by Inventor Corneliu Giurgea

Corneliu Giurgea 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).

  • Patent number: 4837224
    Abstract: (R)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide, its preparation and pharmaceutical compositions containing the same. It can be prepared either by reacting (R)-alpha-ethyl-2-oxo-1-pyrrolidineactic acid successively with an alkyl haloformate and with ammonia, or, by cyclizing an (R)-2-amino-butanamide of the formula X--CH.sub.2 CH.sub.2 --Y--NHCH (C.sub.2 H.sub.5)CONH.sub.2 wherein Y is a --CH.sub.2 --radical when X represents a ZOOC--radical and Y is a --CO--radical when X represents a HalCH.sub.2 --radical, Z being a C.sub.1 -C.sub.4 alkyl radical and Hal a halogen atom.This dextrorotatory enantiomer has been found to have significantly higher mnemic activity and lower toxicity than the corresponding racemate.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: June 6, 1989
    Assignee: UCB Societe Anonyme
    Inventors: Jean Gobert, Corneliu Giurgea, Jean-Pierre Geerts, Guy Bodson
  • Patent number: 4696942
    Abstract: (R)-alpha-ethyl-2-oxo-1-pyrrolidineacetamide, its preparation and pharmaceutical compositions containing the same. It can be prepared either by reacting (R)-alpha-ethyl-2-oxo-1-pyrrolidineacetic acid successively with an alkyl haloformate and with ammonia, or, by cyclizing an (R)-2-amino-butanamide of the formula X--CH.sub.2 CH.sub.2 --Y--NHCH(C.sub.2 H.sub.5)CONH.sub.2 wherein Y is a --CH.sub.2 -- radical when X represents a ZOOC-- radical and Y is a --CO-- radical when X represents a HalCH.sub.2 -- radical, Z being a C.sub.1 -C.sub.4 alkyl radical and Hal a halogen atom. This dextrorotatory enantiomer has been found to have significantly higher mnemic activity and lower toxicity than the corresponding racemate.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: September 29, 1987
    Assignee: UCB Societe Anonyme
    Inventors: Jean Gobert, Corneliu Giurgea, Jean-Pierre Geerts, Guy Bodson