Patents by Inventor Hiskias Keizer

Hiskias Keizer 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).

  • Publication number: 20070281974
    Abstract: The invention relates to a group of 1H-imidazole derivatives which are modulators of cannabinoid receptors, to methods for the preparation of these compounds, to novel intermediates useful for the synthesis of said imidazole derivatives, to methods for the preparation of these intermediates, to pharmaceutical compositions containing one or more of these 1H-imidazole derivatives as active ingredient, as well as to the use of these pharmaceutical compositions for the treatment of psychiatric and neurological disorders in which cannabinoid receptors are involved. The compounds have the general formula (I) wherein R, R1—R4 and X have the meanings given in the specification.
    Type: Application
    Filed: August 21, 2007
    Publication date: December 6, 2007
    Inventors: Josephus Lange, Cornelis Kruse, Herman Van Stuivenberg, Hiskias Keizer
  • Patent number: 7186741
    Abstract: The invention relates to a group of novel 2,3 diaryl-pyparazolidine derivatives having formula (1). The symbols used in formula (1) have the meanings given in the specification. The compounds have inhibiting activity on enzymes which degrade the neuropeptide neurotensin and can be used for the treatment of affections and diseases caused by disturbances of the neurotensin mediated transmission.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: March 6, 2007
    Assignee: Solvay Pharmaceuticals B.V.
    Inventors: Roelof W. Feenstra, Josephus H. M. Lange, Maria L. Pras-Raves, Cornelis G. Kruse, Herman H. van Stuivenberg, Tinka Tuinstra, Hiskias Keizer
  • Publication number: 20060194846
    Abstract: The present invention relates to 5-imino-5H-[1,2,4]-dithiazol-3-yl-amine and [1,2,4]-dithiazolidine-3,5-diylidene-diamine derivatives as inducers of gluthathione-S-transferase (GST) and NADPH quinone oxidoreductase (NQO), to methods for the preparation of these compounds and to novel intermediates useful for the synthesis of said [1,2,4]-dithiazoli(di)ne derivatives. The invention also relates to the use of a compound disclosed herein for the treatment of adverse conditions associated with cytotoxicity in general and apoptosis in particular. The invention relates to compounds of the general formula (I): wherein wherein the symbols have the meanings given in the specification.
    Type: Application
    Filed: February 9, 2006
    Publication date: August 31, 2006
    Inventors: Roelof Feenstra, Hiskias Keizer, Maria Pras-Raves, Bernard Van Vliet, Gustaaf Van Scharrenburg
  • Publication number: 20050137197
    Abstract: The invention relates to a group of 1H-imidazole derivatives which are modulators of cannabinoid receptors, to methods for the preparation of these compounds, to novel intermediates useful for the synthesis of said imidazole derivatives, to methods for the preparation of these intermediates, to pharmaceutical compositions containing one or more of these 1H-imidazole derivatives as active ingredient, as well as to the use of these pharmaceutical compositions for the treatment of psychiatric and neurological disorders in which cannabinoid receptors are involved. The compounds have the general formula (I) wherein R, R1-R4 and X have the meanings given in the specification.
    Type: Application
    Filed: October 15, 2004
    Publication date: June 23, 2005
    Inventors: Josephus Lange, Cornelis Kruse, Herman Van Stuivenberg, Hiskias Keizer
  • Publication number: 20040242493
    Abstract: The invention relates to a group of novel 2,3 diaryl-pyparazolidine derivatives having formula (1). The symbols used in formula (1) have the meanings given in the specification. The compounds have inhibiting activity on enzymes which degrade the neuropeptide neurotensin and can be used for the treatment of affections and diseases caused by disturbances of the neurotensin mediated transmission.
    Type: Application
    Filed: March 23, 2004
    Publication date: December 2, 2004
    Inventors: Roelof W. Feenstra, Josephus H.M. Lange, Maria L. Pras-Raves, Cornelis G. Kruse, Herman H. van Stuivenberg, Tinka Tuinstra, Hiskias Keizer