Patents by Inventor Roelof W. Feenstra

Roelof W. Feenstra 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: 8101619
    Abstract: The invention relates to a group of novel phenylpiperazine derivatives with a dual mode of action: serotonin reuptake inhibition and partial agonism on dopamine-D2 receptors. The invention also relates to the use of a compound disclosed herein for the manufacture of a medicament giving a beneficial effect. The compounds have the general formula (1): wherein the symbols have the meanings given in the specification, and tautomers, stereoisomers and N-oxides thereof, as well as pharmacologically acceptable salts, hydrates and solvates of said compounds of formula (1) and its tautomers, stereoisomers and N-oxides.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: January 24, 2012
    Assignee: Solvay Pharmaceuticals B.V.
    Inventors: Roelof W. Feenstra, Axel Stoit, Jan-Willem Terpstra, Maria L. Pras-Raves, Andrew C. McCreary, Bernard J. Van Vliet, Mayke B. Hesselink, Cornelis G. Kruse, Gustaaf J. M. Van Scharrenburg
  • Patent number: 7750013
    Abstract: The present disclosure relates to N-oxides of certain piperazine and piperidine derivatives and to methods for the preparation of these compounds. The disclosure also relates to the use of the compounds for the manufacture of a medicament giving a beneficial effect. The disclosure also relates to the use of the compounds for the manufacture of a medicament for treating a disease or condition. The disclosure further relates to the treatment of CNS-disorders, in particular the treatment of anxiety disorders, including generalized anxiety disorder and panic disorder, obsessive compulsive disorder, aggression, addiction (including craving), depression, autism, vertigo, schizophrenia and other psychotic disorders, Parkinson's disease and disturbances of cognition and memory. The compounds have the general formula (1) wherein the symbols have the meanings given in the specification.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: July 6, 2010
    Assignee: Solvay Pharmaceuticals, B.V.
    Inventors: Theodorus S. M. Koopman, Hendrink J. Koster, Peter H. Van Amsterdam, Roelof W. Feenstra, Marinus Verhage, Andrew C. McCreary, Mayke B. Hesselink, Gustaaf J. M. Van Scharrenburg
  • Patent number: 7678789
    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: Grant
    Filed: February 9, 2006
    Date of Patent: March 16, 2010
    Assignee: Solvay Pharmaceuticals B.V.
    Inventors: Roelof W. Feenstra, Hiskias G. Keizer, Maria L. Pras-Raves, Bernard J Van Vliet, Gustaaf J. M. Van Scharrenburg
  • Publication number: 20080146524
    Abstract: Embodiments of this invention relate to compounds that are selective inhibitors of neurotensin degrading enzymes, to pharmaceutical compositions containing these compounds, to methods for preparing these compounds, methods for preparing novel intermediates useful for the synthesis of these compounds, and methods for preparing compositions containing these compounds. The invention also relates to the use of such compounds and compositions for regulating blood pressure or gastric emptying, or treating Parkinson's disease, anxiety, depression, or psychosis. The compounds have the formula (1) wherein the symbols have the meanings given in the specification.
    Type: Application
    Filed: December 11, 2007
    Publication date: June 19, 2008
    Inventors: Pieter Smid, Roelof W. Feenstra, Cornelis G. Kruse
  • Patent number: 7371737
    Abstract: The present invention relates to 2-substituted-6-trifluoromethyl purine derivatives as selective adenosine antagonists, in particular adenosine-A3 receptor antagonists, to methods for the preparation of these compounds and to novel intermediates useful for the synthesis of said purine derivatives. The compounds have the general formula (1) wherein the symbols have the meanings given in the specification.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: May 13, 2008
    Assignee: Solvay Pharmaceuticals, B.V.
    Inventors: Melle Koch, Jacobus A. J. den Hartog, Gerrit-Jan Koomen, Martinus J. Wanner, Roelof W. Feenstra
  • Patent number: 7297699
    Abstract: The invention relates to a group of novel piperazine and piperidine derivatives of the formula wherein Y is hydrogen, halogen, alkyl (1-3C), or CN, CF3, OCF3, SCF3, alkoxy(1-3C), amino or mono- or dialkyl(1-3C) substituted amino or hydroxy, X is O, S, SO or SO2, —Z represents —C, ?C or —N, R1 and R2 independently represent hydrogen or alkyl (1-3C), Q is benzyl or 2-, 3- or 4-pyridylmethyl, wich groups may be substited with one or more more substituents from the group halogen, nitro, cyano, amino, mono- or di (1-3C)alkylamino, (1-3C) alkoxy, CF3, OCF3, SCF3, (1-4C)-alkyl, (1-3C)alkylsulfonyl or hydroxy, and salts and prodrugs thereof.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: November 20, 2007
    Assignee: Solvay Pharmaceuticals, Inc.
    Inventors: Roelof W. Feenstra, Johannes A. M. van der Heijden, Cornelis G. Kruse, Stephen K. Long, Gustaaf J. M. van Scharrenburg
  • 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
  • Patent number: 6911448
    Abstract: The invention relates to a group of novel piperazine and piperidine derivatives of the formula wherein Y is hydrogen, halogen, alkyl (1-3C), or CN, CF3, OCF3, SCF3, alkoxy(1-3C), amino or mono- or dialkyl(1-3C) substituted amino or hydroxy, X is O, S, SO or SO2, ---Z represents —C, ?C or —N, R1 and R2 independently represent hydrogen or alkyl (1-3C), Q is benzyl or 2-, 3- or 4-pyridylmethyl, wich groups may be substited with one or more more substituents from the group halogen, nitro, cyano, amino, mono- or di (1-3C)alkylamino, (1-3C) alkoxy, CF3, OCF3, SCF3, (1-4C)-alkyl, (1-3C)alkylsulfonyl or hydroxy, and salts and prodrugs thereof.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: June 28, 2005
    Assignee: Solvay Pharmaceuticals B.V.
    Inventors: Roelof W. Feenstra, Johannes A. M. van der Heijden, Cornelis G. Kruse, Stephen K. Long, Gustaaf J. M. van Scharrenburg
  • Patent number: 6828325
    Abstract: The invention relates to novel phenylpiperazine derivatives of the formula wherein: —R represents the group (a) or (b) as indicated in the description. These compounds are (partial) D2 receptor agonists and are usefull for treating CNS disorders, in particular Parkinson's disease.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: December 7, 2004
    Assignee: Solvay Pharmaceuticals B.V.
    Inventors: Roelof W. Feenstra, Eric Ronken, Cornelis G. Kruse, Andrew C. McCreary, Gustaaf J. M. van Scharrenburg
  • 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
  • Publication number: 20030186838
    Abstract: The invention relates to the use of compounds having combined sopamine D2 agonistic activity, 5-HT1A agonistic activity and a adrenoceptor agonistic activity for the treatment of CNS disorders such as Parkinson's disease.
    Type: Application
    Filed: November 12, 2002
    Publication date: October 2, 2003
    Inventors: Roelof W. Feenstra, Johannes A.M. van der Heijden, Stephen K. Long, Gustaaf J.M. van Scharrenburg
  • Publication number: 20030162791
    Abstract: The invention relates to novel phenylpiperazine derivatives of the formula wherein: —R represents the group (a) or (b) as indicated in the description. These compounds are (partial) D2 receptor agonists and are usefull for treating CNS disorders, in particular Parkinson's disease.
    Type: Application
    Filed: January 30, 2003
    Publication date: August 28, 2003
    Inventors: Roelof W Feenstra, Eric Ronken, Cornelis G Kruse, Andrew C McCreary, Gustaaf J.M. van Scharrenburg
  • Publication number: 20030119849
    Abstract: The invention relates to a group of novel piperazine and piperidine derivatives of the formula wherein Y is hydrogen, halogen, alkyl (1-3C), or CN, CF3, OCF3, SCF3, alkoxy(1-3C), amino or mono- or dialkyl(1-3C) substituted amino or hydroxy, X is O, S, SO or SO2, -Z represents —C, ═C or —N, R1 and R2 independently represent hydrogen or alkyl (1-3C), Q is benzyl or 2-, 3- or 4-pyridylmethyl, wich groups may be substited with one or more more substituents from the group halogen, nitro, cyano, amino, mono- or di (1-3C)alkylamino, (1-3C) alkoxy, CF3, OCF3, SCF3, (1-4C)-alkyl, (1-3C)alkylsulfonyl or hydroxy,and salts and prodrugs thereof. It has been found that these compounds have interesting pharmacological properties due to a combination of (partial) agonism towards the members of the dopamine D2-receptor subfamily and affinity for relevant serotonin and/or noradrenergic receptors.
    Type: Application
    Filed: October 15, 2002
    Publication date: June 26, 2003
    Inventors: Roelof W. Feenstra, Johannes A.M. van der Heijden, Cornelis G. Kruse, Stephen K. Long, Gustaaf J.M. van Scharrenburg
  • Patent number: 6214829
    Abstract: Novel piperazine and piperidine derivative compounds having interesting and advantageous pharmacological properties. The disdosed compounds have the general formula (a) and salts thereof. These compounds have high affinity for both the dopamine D2 receptors and serotonine 5-HT1A receptors, rendering them useful for the treatment of CNS-disorders, in particular schizophrenia.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: April 10, 2001
    Assignee: Duphar International Research B.V.
    Inventors: Roelof W. Feenstra, Gerben M. Visser, Cornelis G. Kruse, Martinus T. M. Tulp, Stephen K. Long