Patents Assigned to DuPont Pharmaceuticals Company
  • Patent number: 6713476
    Abstract: This invention relates to novel lactams having the Formula (I): to their pharmaceutical compositions and to their methods of use. These novel compounds inhibit the processing of amyloid precursor protein and, more specifically, inhibit the production of A&bgr;-peptide, thereby acting to prevent the formation of neurological deposits of amyloid protein. More particularly, the present invention relates to the treatment of neurological disorders related to &bgr;-amyloid production such as Alzheimer's disease and Down's Syndrome.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: March 30, 2004
    Assignee: Dupont Pharmaceuticals Company
    Inventors: Michael G Yang, Hong Liu
  • Patent number: 6635430
    Abstract: This invention is directed to filtrate-holder and reversible-well collection plates composed of polypropylene and Teflon®, and to their use, in connection with compatible filter units, in high-throughput screening assays for assessing the binding of small molecules to proteins.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: October 21, 2003
    Assignee: DuPont Pharmaceuticals Company
    Inventor: Micky D. Tortorella
  • Patent number: 6632812
    Abstract: This invention relates to novel lactams of Formula (I): having drug and bio-affecting properties, their pharmaceutical compositions and methods of use. These novel compounds inhibit the processing of amyloid precursor protein and, more specifically, inhibit the production of A&bgr;-peptide, thereby acting to prevent the formation of neurological deposits of amyloid protein. More particularly, the present invention relates to the treatment of neurological disorders related to &bgr;-amyloid production such as Alzheimer's disease and Down's Syndrome.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: October 14, 2003
    Assignee: Dupont Pharmaceuticals Company
    Inventors: Qi Han, Hong Liu, Richard E. Olson, Michael G. Yang
  • Patent number: 6559152
    Abstract: The present invention relates to the synthesis of a novel class of pyrazolo[3,4-d]pyrimidin-4-ones of formula (I), alternatively represented by the tautomer (II): that are potent inhibitors of the class of enzymes known as cyclin dependent kinases, which relate to the catalytic subunits cyclin dependent kinase 1-8 and their regulatory subunits know as cyclins A-H, K, N, and T. This invention also provides a novel method of treating cancer or other proliferative diseases by administering a therapeutically effective amount of one of these compounds or a pharmaceutically acceptable salt form thereof. Alternatively, one can treat cancer or other proliferative diseases by administering a therapeutically effective combination of one of the compounds of the present invention and one or more other known anti-cancer or anti-proliferative agents.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: May 6, 2003
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Jay A. Markwalder, Steven P. Seitz, Susan R. Sherk
  • Patent number: 6531477
    Abstract: The present invention relates to the synthesis of a novel class of pyrazolo[3,4-d]pyrimidin-4-ones of formula (I), alternatively represented by the tautomer (II): that are potent inhibitors of the class of enzymes known as cyclin dependent kinases, which relate to the catalytic subunits cyclin dependent kinase 1-8 and their regulatory subunits know as cyclins A-H, K, N, and T. This invention also provides a novel method of treating cancer or other proliferative diseases by administering a therapeutically effective amount of one of these compounds or a pharmaceutically acceptable salt form thereof. Alternatively, one can treat cancer or other proliferative diseases by administering a therapeutically effective combination of one of the compounds of the present invention and one or more other known anti-cancer or anti-proliferative agents.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: March 11, 2003
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Jay A. Markwalder, Steven P. Seitz, Susan R. Sherk
  • Patent number: 6451842
    Abstract: A compound represented by the general formula (I), a pharmaceutically acceptable acid addition salt thereof or a pharmaceutically acceptable C1-C6 alkyl addition salt thereof, and their medical applications. These compounds inhibit the action of chemokines such as MIP-1&agr; and/or MCP-1 on target cells, and are useful as therapeutic and/or preventative drugs in diseases, such as atherosclerosis, rheumatoid arthritis, and the like where blood monocytes and lymphocytes infiltrate into tissues.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: September 17, 2002
    Assignees: Dupont Pharmaceuticals Company, Teijin Limited
    Inventors: Tatsuki Shiota, Ken-ichiro Kataoka, Minoru Imai, Takaharu Tsutsumi, Masaki Sudoh, Ryo Sogawa, Takuya Morita, Takahiko Hada, Yumiko Muroga, Osami Takenouchi, Minoru Furuya, Noriaki Endo, Christine M. Tarby, Wilna Moree, Steven Teig
  • Patent number: 6342503
    Abstract: The present invention provides novel compounds, compounds and pharmaceutical compositions thereof, and methods of using same in the treatment of affective disorders, anxiety, depression, post-traumatic stress disorders, eating disorders, supranuclear palsy, irritable bowel syndrome, immune suppression, Alzheimer'disease, gastrointestinal diseases, anorexia nervosa, drug and alcohol withdrawal symptoms, drug addiction, inflammatory disorders, or fertility problems. The novel compounds provided by this invention are those of formula: wherein R1, R3, R4, R5, Z, Y, V, X, X′, J, K, L, and M are as defined herein.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: January 29, 2002
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Paul Edward Aldrich, Argyrios Georgios Arvanitis, Robert Scott Cheeseman, Robert John Chorvat, Thomas Eugene Christos, Paul Joseph Gilligan, Dimitri Emil Grigoriadis, Carl Nicholas Hodge, Paul John Krenitsky, Everett Latham Scholfield, Sang William Tam, Zelda Rakowitz Wasserman
  • Patent number: 6339099
    Abstract: The present application describes nitrogen containing heteroaromatics and derivatives thereof of formula I: or pharmaceutically acceptable salt forms thereof, wherein rings D—E represent guanidine mimics, which are useful as inhibitors of factor Xa.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: January 15, 2002
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Patrick Y. Lam, Charles G. Clark, Celia Dominguez, John M. Fevig, Qi Han, Renhua Li, Donald J. P. Pinto, James R. Pruitt, Mimi L. Quan
  • Patent number: 6326368
    Abstract: The present invention provides novel compounds, and pharmaceutical compositions thereof, and methods of using same in the treatment of affective disorders, anxiety, depression, post-traumatic stress disorders, eating disorders, supranuclear palsey, irritable bowl syndrome, immune supression, Alzheimer's disease, gastrointestinal diseases, anorexia nervosa, drug and alcohol withdrawal symptoms, drug addiction, inflammatory disorders, or fertility problems. The novel compounds provided by this invention are those of formula: wherein R1, R3, R5, Q, Z, Y, V, X and X′ are as defined herein.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: December 4, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Robert John Chorvat, Parthasarathi Rajagopalan
  • Patent number: 6322770
    Abstract: The present invention d ribs novel compounds of the formula: (Q)d—Ln—Ch, useful for the diagnosis and treatment of cancer, methods of imaging tumors in a patient, and methods of treating cancer in a patient. The present invention also provides novel compounds useful for monitoring therapeutic angiogenesis treatment and destruction of new angiogenic vasculature. The pharmaceuticals are comprised of a targeting moiety that binds to a receptor that is upregulated during angiogenesis, an optional linking group, and a therapeutically effective radioisotope or diagnostically effective imageable moiety. The imageable moiety is a gamma ray or positron emitting radioisotope, a magnetic resonance imaging contrast agent, an X-ray contrast agent, or an ultrasound contrast agent.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: November 27, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Milind Rajopadhye, Thomas David Harris
  • Patent number: 6319937
    Abstract: This invention relates to novel isoxazolines of formula (I): or a pharmaceutically acceptable salt form thereof. This invention also relates to novel isoxazolines of formula (I) which are useful as antagonists of the platelet glycoprotein IIb/IIIa fibrinogen receptor complex, to pharmaceutical compositions containing such compounds, processes for preparing such compounds, and to methods of using these compounds, alone or in combination with other therapeutic agents, for the inhibition of platelet aggregation, as thrombolytics, and/or for the treatment of thromboembolic disorders.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: November 20, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: John Wityak, Prabhakar K. Jadhav
  • Patent number: 6313124
    Abstract: Corticotropin releasing factor (CRF) antagonists of formula I or II: and their use in treating anxiety, depression, and other psychiatric, neurological disorders as well as treatment of immunological, cardiovascular or heart-related diseases and colonic hypersensitivity associated with psychopathological disturbance and stress.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: November 6, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Liqi He, Paul Gilligan, Robert Chorvat, Argyrios Georgios Arvanitis
  • Patent number: 6313110
    Abstract: The present invention relates to a compound of Formula (I): or pharmaceutically acceptable salt forms or prodrugs thereof, which are useful as inhibitors of HIV protease, and to pharmaceutical compositions and diagnostic kits comprising the same, and methods of using the same for treating viral infection or as an assay standard or reagent.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: November 6, 2001
    Assignee: Dupont Pharmaceuticals Company
    Inventor: George V. DeLucca
  • Patent number: 6306886
    Abstract: The potent platelet glycoprotein IIb/IIIa antagonist, roxifiban, is produced in crystalline form. Crystalline roxifiban exists in two polymorphic forms, designated Form 1 and Form 2. These polymorphic forms are characterized by x-ray powder diffraction and solid-state carbon NMR. Pharmaceutical compositions and methods for the treatment or prevention of diseases mediated by platelet aggregation are described.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: October 23, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Michael Blaise Maurin, Philip Ma, David John Meloni, Jaan A. Pesti, Lucius Thomas Rossano, Randall K. Ward, Jianguo Yin, Lin Hua Zhang, Goss S. Kauffman
  • Patent number: 6307044
    Abstract: The present invention is directed to a process for the preparation of a compound of formula (X-a): or a pharmaceutically acceptable salt form thereof, wherein: R1 is selected from the group consisting of: C1-5 alkyl substituted with 0-5 R1a, —(CH2)r—C3-10 cycloalkyl substituted with 0-5 R1a, and —(CH2)r-aryl substituted with 0-5 R1a. Compounds of Formula (X-a) are macrocyclic molecules containing anti-succinate residues which inhibit metalloproteinases such as aggrecanase, and the production of tumor necrosis factor (TNF). The anti-succinates are formed by an Ireland Claisen rearrangement of a silyl ketene acetal which proceeds with high stereoselectivity.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: October 23, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Roberta L. Dorow, Silvio Campagna, Pasquale N. Confalone, Fuqiang Jin, Zhe Wang
  • Patent number: 6303609
    Abstract: This invention relates to novel isoxazolines and isoxazoles of formula (I): or a pharmaceutically acceptable salt or prodrug form thereof. The invention relates to novel isoxazolines which are useful as antagonists of the platelet glycoprotein IIb/IIIa fibrinogen receptor complex, to pharmaceutical compositions containing such compounds, processes for preparing such compounds, and to methods of using these compounds, alone or in combination with other therapeutic agents, for the inhibition of platelet aggregation, as thrombolytics, and/or for the treatment of thromboembolic disorders.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: October 16, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Joanne M. Smallheer, Shuaige Wang, Prabhakar Kondaji Jadhav
  • Patent number: 6303780
    Abstract: The present invention relates to benzoxazinones of formula I: or stereoisomeric forms or mixtures, or pharmaceutically acceptable salt forms thereof, which are useful as inhibitors of HIV reverse transcriptase, and to pharmaceutical compositions and diagnostic kits comprising the same, methods of using the same for treating viral infection or as an assay standard or reagent, and intermediates and processes for making the same.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: October 16, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Joseph Marian Fortunak, Rodney Lawrence Parsons, Jr., Mona Patel
  • Patent number: 6297410
    Abstract: The present invention relates generally to novel methods for the synthesis of cyclopropylacetylene which is an essential reagent in the asymmetric synthesis of (S)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one; a useful human immunodeficiency virus (HIV) reverse transcriptase inhibitor. In the process, cyclopropane carboxaldehyde is condensed with malonic acid to form 3-cyclopropylacrylic acid; 3-cyclopropylacrylic acid is halogenated to form (E,Z)-1-halo-2-cyclopropylethylene; and (E,Z)-1-halo-2-cyclopropylethylene is dehydrohalogenated to form cyclopropyl acetylene. This improvement provides for high conversion of inexpensive, readily available starting materials into cyclopropylacetylene, high overall yields and can be conducted on an industrial scale.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: October 2, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Joseph M. Fortunak, Zhe Wang, Jianguo Yin
  • Patent number: 6294671
    Abstract: The present invention describes novel isoxazolo[1,5-a]pyrimidines of formula: wherein R is an aromatic or heteroaromatic ring, or pharmaceutically acceptable salt form thereof, which are useful as CRF antagonists.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: September 25, 2001
    Assignee: DuPont Pharmaceuticals Company
    Inventor: William Eric Frietze
  • Patent number: RE37781
    Abstract: This invention relates to substituted cyclic carbonyls and derivatives thereof useful as retroviral protease inhibitors, to pharmaceutical compositions comprising such compounds, and to methods of using these compounds for treating viral infection. A representative compound of the invention is the compound of formula: wherein R22 and R23 are allyl.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: July 2, 2002
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Patrick Y. Lam, Prabhakar K. Jadhav, Charles J. Eyermann, Carl N. Hodge, George V. De Lucca, James D. Rodgers