Patents by Inventor Peng C. Tang

Peng C. Tang 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: 6911446
    Abstract: The present invention is directed in part towards methods of modulating the function of serine/threonine protein kinases with quinazoline-based compounds. The methods incorporate cells that express a serine/threonine protein kinase, such as RAF. In addition, the invention describes methods of preventing and treating serine/threonine protein kinase-related abnormal conditions in organisms with a compound identified by the invention. Furthermore, the invention pertains to quinazoline compounds and pharmaceutical compositions comprising these compounds.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: June 28, 2005
    Assignee: Sugen, Inc.
    Inventors: Peng C. Tang, Gerald McMahon, Heinz Weinberger, Bernhard Kutscher, Harald App
  • Patent number: 6750240
    Abstract: The present invention relates to novel synthetic methods for the preparation of indolylquinones. The methods of the present invention are directed to synthetic reactions involving indoles and halo-quinones in solvent and in the presence of a metal carbonate. The invention also relates to bis- and mono-indolylquinones of high purity and pharmaceutical compositions containing the same.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: June 15, 2004
    Assignee: Sugen, Inc.
    Inventors: Peng C. Tang, G. Davis Harris
  • Publication number: 20030060635
    Abstract: The present invention relates to novel synthetic methods for the preparation of indolylquinones. The methods of the present invention are directed to synthetic reactions involving indoles and halo-quinones in solvent and in the presence of a metal carbonate. The invention also relates to bis- and mono-indolylquinones of high purity and pharmaceutical compositions containing the same.
    Type: Application
    Filed: May 3, 2000
    Publication date: March 27, 2003
    Inventors: Peng C. Tang, G. Davis Harris
  • Publication number: 20010014679
    Abstract: The present invention is directed in part towards methods of modulating the function of serine/threonine protein kinases with quinazoline-based compounds. The methods incorporate cells that express a serine/threonine protein kinase, such as RAF. In addition, the invention describes methods of preventing and treating serine/threonine protein kinase-related abnormal conditions in organisms with a compound identified by the invention. Furthermore, the invention pertains to quinazoline compounds and pharmaceutical compositions comprising these compounds.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 16, 2001
    Inventors: Peng C. Tang, Gerald McMahon, Heinz Weinberger, Bernhard Kutscher, Harald App
  • Patent number: 6204267
    Abstract: The present invention is directed in part towards methods of modulating the function of serine/threonine protein kinases with quinazoline-based compounds. The methods incorporate cells that express a serine/threonine protein kinase, such as RAF. In addition, the invention describes methods of preventing and treating serine/threonine protein kinase-related abnormal conditions in organisms with a compound identified by the invention. Furthermore, the invention pertains to quinazoline compounds and pharmaceutical compositions comprising these compounds.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: March 20, 2001
    Assignee: Sugen, Inc.
    Inventors: Peng C. Tang, Gerald McMahon, Heinz Weinberger, Bernhard Kutscher, Harald App
  • Patent number: 6110957
    Abstract: The present invention relates to novel synthetic methods for the preparation of indolylquinones. The methods of the present invention are directed to synthetic reactions involving indoles and halo-quinones in solvent and in the presence of a metal carbonate. The invention also relates to bis- and mono-indolylquinones of high purity and pharmaceutical compositions containing the same.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: August 29, 2000
    Assignee: Sugen, Inc.
    Inventors: Peng C. Tang, G. Davis Harris, Jr.
  • Patent number: 5786488
    Abstract: The present invention relates to novel synthetic methods for the preparation of indolylquinones. The methods of the present invention are directed to synthetic reactions involving indoles and halo-quinones in solvent and in the presence of a metal carbonate. The invention also relates to bis- and mono-indolylquinones of high purity and pharmaceutical compositions containing the same.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: July 28, 1998
    Assignee: Sugen, Inc.
    Inventors: Peng C. Tang, G. Davis Harris
  • Patent number: 5614642
    Abstract: The present invention relates to organic molecules capable of inhibiting protein tyrosine phosphatase activity. The invention further relates to the use of such molecules to modulate or regulate signal transduction by inhibiting protein tyrosine phosphatase activity. Finally, the invention relates to the use of such molecules to treat various disease states including diabetes mellitus.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: March 25, 1997
    Assignee: Sugen Inc.
    Inventors: Peng C. Tang, Gerald McMahon
  • Patent number: 5602171
    Abstract: The present invention relates to organic molecules capable of inhibiting protein tyrosine phosphatase activity. The invention further relates to the use of such molecules to modulate or regulate signal transduction by inhibiting protein tyrosine phosphatase activity. Finally, the invention relates to the use of such molecules to treat various disease states including diabetes mellitus.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Assignee: Sugen Inc.
    Inventors: Peng C. Tang, Gerald McMahon
  • Patent number: 5508387
    Abstract: Glyco-amino acids or glycopeptides that have three-dimensionally stable configuration for the presentation of functional groups, fucose, or an analogue or derivative thereof, covalently linked to an amino acid or peptide with a free carboxylic acid group, that facilitate binding between those groups and receptors on selectins, represented by the general structural formula I.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: April 16, 1996
    Assignee: Glycomed Incorporated
    Inventors: Peng C. Tang, Daniel E. Levy, Kevin R. Holme, Saeed A. Abbas
  • Patent number: 5412123
    Abstract: Derivatives of anthraquinone and anthracene are synthesized and formulated into pharmaceutical formulations. When the formulations are administered the derivatives act as ligands binding to an interrupting the biological chain of events associated with selectin receptors in the human body.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: May 2, 1995
    Assignee: Glycomed Incorporated
    Inventors: Narasinga Rao, Peng C. Tang, John H. Musser
  • Patent number: 5075327
    Abstract: A compound and process of making thereof of formula ##STR1## wherein R.sub.1 is hydrogen; and A is alkyl; cycloalkyl; alkenyl; alkyl substituted with trifluoromethyl; phenyl; halophenyl; phenyl-C.sub.1-3 alkyl; phenyl-C.sub.1-3 alkyl substituted on the phenyl with 1 to 3 substituents selected from the group consisting of halo, C.sub.1-3 alkyl, and C.sub.1-3 alkoxy; orA is ##STR2## wherein Z is lower alkyl; R.sub.2 is hydrogen or ##STR3## R.sub.3 is hydrogen or methyl, and n is 1 to 5; Y is phenyl, is phenyl substituted by 1 to 3 substituents selected from the group consisting of halo, lower alkyl, and lower alkoxy; Y' is hydrogen or methyl; and b and d are carbon-carbon bonds or c is a carbon-carbon bond;or the corresponding hydroxy acid of formula ##STR4## wherein A, and R.sub.1, R.sub.2, R.sub.3, Y and Y' are as described above, or a pharmaceutically acceptable salt of said acid, an alkyl ester of said acid, an acetylamino-substituted-C.sub.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: December 24, 1991
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Peng C. Tang, Milan R. Uskokovic