Patents by Inventor Sui Xiong Cai

Sui Xiong Cai 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: 20020016464
    Abstract: This invention is related to substituted 2-aminoacetamides represented by formula (II): or a pharmaceutically acceptable salt or prodrug thereof, wherein the substituents are defined herein. The invention also is directed to the use of substituted 2-aminoacetamides for the treatment of neuronal damage following global and focal ischemia, for the treatment or prevention of neurodegenerative conditions such as amyotrophic lateral sclerosis (ALS), and for the treatment, prevention or amelioration of pain, as anticonvulsants, and as antimanic depressants, as local anesthetics, as antiarrhythmics and for the treatment or prevention of diabetic neuropathy.
    Type: Application
    Filed: August 21, 2001
    Publication date: February 7, 2002
    Applicant: Euro-Celtique S.A.
    Inventors: Nancy C. Lan, Yan Wang, Sui Xiong Cai
  • Patent number: 6342611
    Abstract: The present invention relates to novel fluorescent dyes, novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of caspases and other enzymes involved in apoptosis in whole cells, cell lines and tissue samples derived from any living organism or organ. The reporter molecules and assay processes can be used in drug screening procedures to identify compounds which act as inhibitors or inducers of the caspase cascade in whole cells or tissues. The reagents and assays described herein are also useful for determining the chemosensitivity of human cancer cells to treatment with chemotherapeutic drugs. The present invention also relates to novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of type 2 methionine aminopeptidase, dipeptidyl peptidase IV, calpain, aminopeptidase, HIV protease, adenovirus protease, HSV-1 protease, HCMV protease and HCV protease.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: January 29, 2002
    Assignee: Cytovia, Inc.
    Inventors: Eckard Weber, Sui Xiong Cai, John F. W. Keana, John A. Drewe, Han-Zhong Zhang
  • Publication number: 20020010185
    Abstract: The present invention is directed to substituted nicotinamides and analogs thereof, represented by Formula V: 1
    Type: Application
    Filed: January 26, 2001
    Publication date: January 24, 2002
    Applicant: Cytovia, Inc.
    Inventors: Sui Xiong Cai, John A. Drewe
  • Publication number: 20020010169
    Abstract: The present invention is directed to substituted 1,4-thiazepine and analogs thereof, represented by the general Formula I: 1
    Type: Application
    Filed: April 18, 2001
    Publication date: January 24, 2002
    Applicant: Cytovia, Inc.
    Inventors: John A. Drewe, Sui Xiong Cai, Emma Jane Shelton, Joane Litvak, David Sperandio, Jeffrey R. Spencer
  • Patent number: 6335429
    Abstract: The present invention relates to novel fluorescent dyes, novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of caspases and other enzymes involved in apoptosis in whole cells, cell lines and tissue samples derived from any living organism or organ. The reporter molecules and assay processes can be used in drug screening procedures to identify compounds which act as inhibitors or inducers of the caspase cascade in whole cells or tissues. The reagents and assays described herein are also useful for determining the chemosensitivity of human cancer cells to treatment with chemotherapeutic drugs. The present invention also relates to novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of type 2 methionine aminopeptidase, dipeptidyl peptidase IV, calpain, aminopeptidase, HIV protease, adenovirus protease, HSV-1 protease, HCMV protease and HCV protease.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: January 1, 2002
    Assignee: Cytovia, Inc.
    Inventors: Sui Xiong Cai, John F. W. Keana, John A. Drewe, Han-Zhong Zhang
  • Publication number: 20010051633
    Abstract: The invention relates to subtype-selective NMDA receptor ligands and the use thereof for treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease and Down's syndrome, treating or preventing the adverse consequences of the overstimulation of the excitatory amino acids, treating anxiety, psychosis, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headache, chronic pain, Parkinson's disease, glaucoma, CMV retinitis, urinary incontinence, opioid tolerance or withdrawal, and inducing anesthesia, as well as for enhancing cognition.
    Type: Application
    Filed: February 7, 2001
    Publication date: December 13, 2001
    Inventors: Christopher F. Bigge, Gian Luca Araldi, Sui Xiong Cai, Anthony P. Guzikowski, Donald Lamunyon, Nancy C. Lan, Zhang-Lin Zhou, John F.W. Keana
  • Patent number: 6281211
    Abstract: This invention is related to substituted semicarbazides represented by Formula (I) or a pharmaceutically acceptable salt or prodrug thereof, wherein: R1 and R2 are independently hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, haloalkyl, aryl, aminoalkyl, hydroxyalkyl, alkoxyalkyl or carboxyalkyl; R3, R4, R5 and R6 are independently hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, haloalkyl, aryl, aminoalkyl, hydroxyalkyl, alkoxyalkyl or carboxyalkyl, or R3 and R4 is defined as above, and R5 and R6 together with the nitrogen atom to which they are attached form a heterocycle, including piperidine, piperazine, morpholine; A1 and A2 are independently aryl, heteroaryl, saturated or partially unsaturated carbocycle or saturated or partially unsaturated heterocycle, any of which is optionally substituted; X is one of O, S, NR7, CH2, C(O), NR7C(O), C(O)NR7, SO, SO2 or a covalent bond; where R7 is hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, haloalkyl, aryl, aminoalkyl, hydroxyalkyl, alkoxyalkyl or carboxyalkyl; n is
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: August 28, 2001
    Assignee: Euro-Celtique S.A.
    Inventors: Sui Xiong Cai, Nancy C. Lan, Soo Hong-Bae
  • Patent number: 6251903
    Abstract: Methods of treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia, and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease, and Down's syndrome, treating or preventing the adverse consequences of the hyperactivity of the excitatory amino acids, as well as treating anxiety, chronic pain, convulsions, and inducing anesthesia are disclosed by administering to an animal in need of such treatment an alkyl or azido-substituted 1,4-dihydroquinoxaline-2,3-dione or pharmaceutically acceptable salts thereof, which have high binding to the glycine receptor.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: June 26, 2001
    Assignees: Cocensys, Inc., State of Oregon, Acting by and through the Oregon State Board of Higher Education, Acting for and on behalf of the Oregon Health Sciences University and the University of Oregon, The Regents of the University of California
    Inventors: Sui Xiong Cai, Eckard Weber, John F. W. Keana, Sunil Kher
  • Patent number: 6248904
    Abstract: The present invention relates to novel fluorescent dyes, novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of caspases and other enzymes involved in apoptosis in whole cells, cell lines and tissue samples derived from any living organism or organ. The reporter molecules and assay processes can be used in drug screening procedures to identify compounds which act as inhibitors or inducers of the caspase cascade in whole cells or tissues. The reagents and assays described herein are also useful for determining the chemosensitivity of human cancer cells to treatment with chemotherapeutic drugs. The present invention also relates to novel fluorogenic and fluorescent reporter molecules and new enzyme assay processes that can be used to detect the activity of type 2 methionine aminopeptidase, HIV protease, adenovirus protease, HSV-1 protease, HCMV protease and HCV protease.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: June 19, 2001
    Assignee: Cytovia, Inc.
    Inventors: Han-Zhong Zhang, Sui Xiong Cai
  • Patent number: 6218404
    Abstract: The invention relates to subtype-selective NMDA receptor ligands and the use thereof for treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia and surgery, as well as treating neuro-degenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease and Down's syndrome, treating or preventing the adverse consequences of the overstimulation of the excitatory amino acids, treating anxiety, psychosis, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headache, chronic pain, Parkinson's disease, glaucoma, CMV retinitis, urinary incontinence, opioid tolerance or withdrawal, and inducing anesthesia, as well as for enhancing cognition.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: April 17, 2001
    Assignees: Warner-Lambert Co., Cocensys, Inc.
    Inventors: Christopher F. Bigge, Gian Luca Araldi, Sui Xiong Cai, Anthony P. Guzikowski, Donald Lamunyon, Nancy F. Lan, Zhang-Lin Zhou, John F. W. Keana
  • Patent number: 6184210
    Abstract: The present invention is directed to novel dipeptides thereof, represented by the general Formula I: where R1-R3 and AA are defined herein. The present invention relates to the discovery that compounds having Formula I are potent inhibitors of apoptotic cell death. Therefore, the inhibitors of this invention can retard or block cell death in a variety of clinical conditions in which the loss of cells, tissues or entire organs occurs.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: February 6, 2001
    Assignee: Cytovia, Inc.
    Inventors: John F. W. Keana, Sui Xiong Cai, John Guastella, Wu Yang, John A. Drewe
  • Patent number: 6153591
    Abstract: The present invention is directed to novel dipeptides represented by the general Formula I: ##STR1## where R.sub.1 -R.sub.2 and AA are defined herein. The present invention relates to the discovery that compounds having Formula I are potent inhibitors of caspases and apoptotic cell death. Therefore, the inhibitors of this invention can retard or block cell death in a variety of clinical conditions in which the loss of cells, tissues or entire organs occurs.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: November 28, 2000
    Assignee: Cytovia, Inc.
    Inventors: Sui Xiong Cai, John Drewe, Yan Wang, Eckard Weber
  • Patent number: 6147075
    Abstract: Methods of treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia, and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease, and Down's syndrome, treating or preventing the adverse consequences of the hyperactivity of the excitatory amino acids, as well as treating anxiety, chronic pain, convulsions, and inducing anesthesia are disclosed by administering to an animal in need of such treatment an alkyl or azido-substituted 1,4-dihydroquinoxaline-2,3-dione or pharmaceutically acceptable salts thereof, which have high binding to the glycine receptor.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: November 14, 2000
    Assignees: CoCensys, Inc., State of Oregon, Acting by and Through the Oregon State Board of Higher Education, Acting for and on Behalf of the Oregon Health Sciences University and the University of Oregon, Eugene Oregon, The Regents of the University of California
    Inventors: Sui Xiong Cai, Eckard Weber, John F. W. Keana, Sunil Kher
  • Patent number: 6130234
    Abstract: Novel 4-substituted piperidine analogs, pharmaceutical compositions containing the same and the method of using 4-substituted piperidine analogs as selectively active antagonists of N-methyl-D-aspartate (NMDA) receptor subtypes for treating conditions such as stroke, cerebral ischemia, central nervous system trauma, hypoglycemia, anxiety, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headaches, glaucoma, CMV retinitis, chronic pain, opioid tolerance or withdrawals, or neurodegenerative disorders, such as lathyrism, Alzheimer's Disease, Parkinsonism and Huntington's Disease are described. Also described are novel methods for preparing 4-substituted piperidine analogs and novel intermediates of the 4-substituted piperidine analogs.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: October 10, 2000
    Assignees: Warner-Lambert Company, Cocensys, Incorporated
    Inventors: Christopher F. Bigge, Jonathan Wright, Sui Xiong Cai, Eckard Weber, Richard Woodward, Nancy C. Lan, Zhang-Lin Zhou, John F. W. Keana
  • Patent number: 6124323
    Abstract: Novel 4-substituted piperidine analogs, pharmaceutical compositions containing the same and the method of using 4-substituted piperidine analogs are selective active antagonists of N-methyl-D-aspartate (NMDA) receptor subtypes for treating conditions such as stroke, cerebral ischemia, central nervous system trauma, hypoglycemia, psychosis, anxiety, migraine headaches, glaucoma, CMV retinitis, aminoglycoside antibiotics-induced hearing loss, convulsions, chronic pain, opioid tolerance or withdrawal, urinary incontinence or neurodegenerative disorders, such as lathyrism, Alzheimer's Disease, Parkinsonism and Huntington's Disease are described.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: September 26, 2000
    Assignees: Warner-Lambert Company, Cocensys, Incorporated
    Inventors: Christopher F. Bigge, Po-Wai Yuen, Sui Xiong Cai, Eckard Weber, Richard Woodward, Nancy C. Lan, Zhang-Lin Zhou, John F. W. Keana, Anthony P. Guzikowski
  • Patent number: 6124317
    Abstract: Novel 2-substituted piperidine analogs, pharmaceutical compositions containing the same and the method of using 2-substituted piperidine analogs as selectively active antagonists of N-methyl-D-aspartatc (NMDA) receptor subtypes for treating conditions such as stroke, cerebral ischemia, central nervous system trauma, hypoglycemia, anxiety, convulsions, amioglycoside antibiotics-induced hearing loss, migraine headaches, chronic pain, glaucoma, CMV retinitis, psychosis, urinary incontinence, opioid tolerance or withdrawal, or neurodegenerative disorders, such as lathyrism, Alzheimer's Disease, Parkinsonism and Huntington's Disease are described.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: September 26, 2000
    Assignees: Warner-Lambert Company, Cocensys, Inc.
    Inventors: Christopher F. Bigge, John F. W. Keana, Sui Xiong Cai, Eckard Weber, Richard Woodward, Nancy C. Lan, Anthony P. Guzikowski
  • Patent number: 5977107
    Abstract: Methods of treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia, and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease, and Down's syndrome, treating or preventing the adverse consequences of the hyperactivity of the excitatory amino acids, as well as treating anxiety, chronic pain, convulsions, and inducing anesthesia are disclosed by administering to an animal in need of such treatment an alkyl or azido-substituted 1,4-dihydroquinoxaline-2,3-dione or pharmaceutically acceptable salts thereof, which have high binding to the glycine receptor.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: November 2, 1999
    Assignees: Cocensys, Inc., State of Oregon, Acting by and Through the Oregon State Board of Higher Education, acting for and on Behalf of the Oregon Health Sciences University and the University of Oregon, Eugene Oregon, The Regents of the University of California
    Inventors: Sui Xiong Cai, Eckard Weber, John F. W. Keana, Sunil Kher
  • Patent number: 5891871
    Abstract: The invention relates to substituted 2,3-benzodiazepin-4-ones which are antagonists or positive modulators of AMPA receptors, and the use thereof for treating, preventing or ameliorating neuronal loss associated with stroke, global and focal ischemia, CNS trauma, hypoglycemia and surgery, as well as treating or ameliorating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease, Parkinson's disease and Down's syndrome, treating, preventing or ameliorating the adverse consequences of the overstimulation of the excitatory amino acids, treating or ameliorating anxiety, psychosis, convulsions, chronic pain, glaucoma, CMV retinitis, urinary incontinence, muscular spasm and inducing anesthesia, as well as for treating or ameliorating the adverse consequences of excitatory amino acid deficiency such as schizophrenia, Alzheimer's disease and malnutrition and neural maldevelopment, and as cognition enhancers.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: April 6, 1999
    Assignee: CoCensys, Inc.
    Inventors: Haiji Xia, Sui Xiong Cai, George Field, Nancy C. Lan, Yan Wang
  • Patent number: 5863916
    Abstract: Disclosed are compounds of the formula: ##STR1## or pharmaceutically acceptable salts thereof; wherein n is zero or 1; R.sup.4, R.sup.5, R.sup.6 are independently hydrogen, nitro, amino, halo, haloalkyl, cyano, alkyl, cycloalkyl, alkenyl, alkynyl, azido, acylamino, alkylsulfonyl, aryl, substituted aryl, heteroaryl, alkoxy, trialkylsilyl-substituted alkoxy, aryloxy, substituted aryloxy, heteroaryloxy, a heterocyclic group, a heterocyclicoxy group, aralkoxy, or haloalkoxy; and R.sup.c and R.sup.d are defined in the specification. These compounds have high binding to the glycine site of the NMDA receptor. Also disclosed are methods of treating pathophysiologic conditions associated with neuronal degeneration, convulsions, anxiety, chronic pain, pyschosis, opiate tolerance, and inducing anesthesia.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: January 26, 1999
    Assignees: State of Oregon, Acting by and Through the Oregon State Board of Higher-Education, Acting for and on Behalf of the Oregon Health Sciences University and The University of Oregon, The Regents of the University of California, Cocensys, Inc.
    Inventors: Sui Xiong Cai, John F. W. Keana, Eckard Weber
  • Patent number: 5801183
    Abstract: Methods of treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease, and Down's syndrome, treating or preventing adverse consequences of the hyperactivity of the excitatory amino acids, as well as treating anxiety, chronic pain, convulsions, inducing anesthesia, and treating or preventing opiate tolerance are disclosed by administering to an animal in need of such treatment or prevention a substituted or unsubstituted pyridine and pyridine (N-oxide) analogs of 4-hydroxydihydroquinolones, tetrahydroquinoline-trione-oximes and quinoxalones, tautomers and pharmaceutically acceptable salts thereof, which have high binding to the glycine receptor.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 1, 1998
    Assignees: State of Oregon, Acting by and Through the Oregon State Board of Higher Education, Acting for and on Behalf of the Oregon Health Sciences University and the University of Oregon, Cocensys, Inc.
    Inventors: John F. W. Keana, Sui Xiong Cai, Zhang-Lin Zhou, James M. Navratil