Patents by Inventor Allan Tse

Allan Tse 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).

  • Processes for preparing substituted 1, 3-oxathiolanes with antiviral properties
    Patent number: 6831174
    Abstract: Disclosed are processes for preparing compounds of the formula (I) and pharmaceutically acceptable salts or esters thereof: wherein R2 is a purine or pyrimidine base or an analogue or derivative thereof; and Z is S, S═O or SO2. The invention also relates to intermediates of use in the preparation of these compounds.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: December 14, 2004
    Assignee: Shire BioChem Inc.
    Inventors: Bernard Belleau, Tarek Mansour, Allan Tse, Colleen A. Evans, Haolun Jin, Boulos Zacharie, Nghe Nguyen-Ba
  • Aminopiperidines
    Publication number: 20030176461
    Abstract: Described herein are compounds having general formula (1), wherein groups R1, R2, R3, Ar1, Ar2, Ar3, X, Y, p and n are as defined in the specification, and a salt, solvate and hydrate thereof. Such compounds inhibit glycine transport (or reuptake) via the GlyT-1 transporter, or are precursors (for example, pro-drugs) of such compounds and, thus, are useful in the treatment of schizophrenia, as well as other CNS-related disorders such as dementia, Alzheimer's disease, attention deficit disorder and depression.
    Type: Application
    Filed: October 21, 2002
    Publication date: September 18, 2003
    Inventors: Ian R. Egle, Jennifer Frey, Methvin B. Isaac, Abdelmalik Slass, Leah E. Begleiter, Louise G. Edwards, Tomislav Stefanac, Ashok Tehim, Shewn P. Maddaford, Hoi Lun Allan Tse
  • Processes for preparing substituted 1, 3-oxathiolanes with antiviral properties
    Publication number: 20010041797
    Abstract: Disclosed are processes for preparing compounds of the formula (I) and pharmaceutically acceptable salts or esters thereof: 1
    Type: Application
    Filed: January 16, 2001
    Publication date: November 15, 2001
    Applicant: BioChem Pharma Inc.
    Inventors: Bernard Belleau, Tarek Mansour, Allan Tse, Colleen A. Evans, Haolun Jin, Boulos Zacharie, Nghe Nguyen-Ba
  • Processes for preparing substituted 1,3-oxathiolanes with antiviral properties
    Patent number: 6175008
    Abstract: Disclosed are processes for preparing compounds of the formula (I) and pharmaceutically acceptable salts or esters thereof: wherein R2 is a purine or pyrimidine base or an analogue or derivative thereof; and Z is S, S═O or SO2. The invention also relates to intermediates of use in the preparation of these compounds.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 16, 2001
    Assignee: BioChem Pharma Inc.
    Inventors: Bernard Belleau, Tarek Mansour, Allan Tse, Colleen A. Evans, Haolun Jin, Boulos Zacharie, Nghe Nguyen-Ba
  • Processes for preparing substituted 1,3-oxathiolanes with antiviral properties
    Patent number: 5684164
    Abstract: Disclosed are processes for preparing compounds of the formula (I) and pharmaceutically acceptable salts or esters thereof: ##STR1## wherein R.sub.2 is a purine or pyrimidine base or an analogue or derivative thereof; and Z is S, S.dbd.O or SO.sub.2. The invention also relates to intermediates of use in the preparation of these compounds.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 4, 1997
    Assignee: BioChem Pharma Inc.
    Inventors: Bernard Belleau, deceased, Tarek Mansour, Allan Tse, Colleen A. Evans, Haolun Jin, Boulos Zacharie, Nghe Nguyen-Ba
  • Processes for preparing substituted 1,3-oxathiolanes with antiviral properties
    Patent number: 5466806
    Abstract: Disclosed are processes for preparing compounds of the formula (I) and pharmaceutically acceptable salts or esters thereof: ##STR1## wherein R.sub.2 is a purine or pyrimidine base or an analogue or derivative thereof; and Z is S, S.dbd.O or SO.sub.2. The invention also relates to intermediates of use in the preparation of these compounds.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: November 14, 1995
    Assignee: Biochem Pharma Inc.
    Inventors: Bernard Belleau, deceased, Tarek Mansour, Allan Tse, Colleen A. Evans, Haolun Jin, Boulos Zacharie, Nghe Nguyen-Ba