Patents by Inventor Lulin Wei

Lulin Wei 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).

  • Process for the preparation of 1,5-naphthyridine-3-carboxyamides by direct ester amidation
    Publication number: 20050038065
    Abstract: A new route for the preparation of substituted 1,5-naphthyridine-3-carboxyamides, useful in the diagnosis and treatment of anxiety, Downs Syndrome, sleep, cognitive and seizure disorders, and overdose with benzodiazepine drugs and for enhancement of alertness, is provided. These compounds may be readily prepared by heating the corresponding 1,5-naphthyridine-3-carboxylic acid ester with a primary amine in a polar solvent such as dimethylformamide or dimethylsulfoxide.
    Type: Application
    Filed: May 28, 2004
    Publication date: February 17, 2005
    Inventors: Gregory Karrick, David Ripin, Lulin Wei
  • Processes for the preparation of substituted bicyclic derivatives
    Publication number: 20050026940
    Abstract: The invention relates to processes for preparing compounds of the formula 1 and to pharmaceutically acceptable salts, prodrugs and solvates thereof, wherein R1, R3, R4, R6, R11, R13, R14, R15, R16, R17, k, l, and m are as defined herein. The compounds of formula 1 are useful intermediates toward preparing compounds that may be used in treating abnormal cell growth in mammals by administering pharmaceutical compositions.
    Type: Application
    Filed: April 9, 2004
    Publication date: February 3, 2005
    Inventors: David Ripin, Michael Vetelino, Lulin Wei
  • Process for preparing 4?-substituted-9-deoxo-9a-aza-9a-homoerythromycin a derivatives
    Patent number: 6825327
    Abstract: The invention relates to processes for preparing compounds of formula 1 wherein R3 is as defined herein, and to pharmaceutically acceptable salts thereof, as well as intermediates useful in such processes. The compounds of formula 1 are antibacterial agents that may be used to treat various bacterial and protozoa infections. The invention also relates to pharmaceutical compositions containing compounds prepared by the processes of the invention and to methods of treating bacterial protozoa infections by administering such compounds.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 30, 2004
    Assignee: Pfizer Inc.
    Inventors: Constantine Sklavounos, John L. Tucker, Lulin Wei, Kerry P. Mahon, Philip Hammen, Joanna T. Negri, Richard S. Lehner
  • Process for preparing 4"-substituted-9-deoxo-9a-aza-9a-homoerythromycin a derivatives
    Publication number: 20030064939
    Abstract: The invention relates to processes for preparing compounds of formula 1 1
    Type: Application
    Filed: April 25, 2002
    Publication date: April 3, 2003
    Inventors: Constantine Sklavounos, John L. Tucker, Lulin Wei, Kerry P. Mahon, Philip Hammen, Joanna T. Negri, Richard S. Lehner