Patents by Inventor Zhengong Li

Zhengong Li 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: 20050288288
    Abstract: The present invention relates to methods of preparing compounds of formula I or a pharmaceutically acceptable salt thereof, wherein R1, R2, R4, and R7 have any of the values as defined in the specification. The compounds are useful as agents in the treatment of diseases, including inflammatory diseases such as rheumatoid arthritis. Also provided are compositions of crystalline 2-Chloro-N-(1-hydroxy-cycloheptylmethyl)-5-[4-(2R-hydroxy-3-methoxy-propyl)-3,5-dioxo-4,5-dihydro-3H-[1,2,4]triazin-2-yl]-benzamide comprising less than 2.5% residual organic solvent, and methods for preparing said compositions. Further provided are methods for crystallizing 2-Chloro-N-(1-hydroxy-cycloheptylmethyl)-5-[4-(2R-hydroxy-3-methoxy-propyl)-3,5-dioxo-4,5-dihydro-3H-[1,2,4]triazin-2-yl]-benzamide.
    Type: Application
    Filed: June 27, 2005
    Publication date: December 29, 2005
    Inventors: Jason Leonard, Zheng Li, Zhengong Li, Frank Urban
  • Publication number: 20050288256
    Abstract: The present invention relates to the methods for preparing compounds of the formula I: or the pharmaceutically acceptable salts thereof, wherein R1, R2, R4, R10, and R11 have any of the values defined in the specification. The compounds of the present invention are useful in the treatment of diseases, including inflammatory diseases such as rheumatoid arthritis.
    Type: Application
    Filed: June 27, 2005
    Publication date: December 29, 2005
    Inventor: Zhengong Li