Patents by Inventor Fucheng Zhang

Fucheng Zhang 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 and intermediates for the preparation of 3-(amino)-3-cyclobutylmethyl-2-hydroxy-propionamide or salts thereof
    Patent number: 7595419
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I: and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: September 29, 2009
    Assignee: Schering Corporation
    Inventors: Minzhang Chen, Michael D. Green, Fucheng Zhang
  • Process for preparing xanthine phosphodiesterase V inhibitors and precursers thereof
    Publication number: 20060205943
    Abstract: A process for preparing xanthine phosphodiesterase V inhibitors, and compounds utilized in said process. The process includes a five-step methodology for efficient synthesis of Compound 5 without intermediate purifications or separations, a dihalogenation step to synthesize Compound 7, and a coupling reaction to produce Compound 9.
    Type: Application
    Filed: May 8, 2006
    Publication date: September 14, 2006
    Inventors: Vilas Dahanukar, Hoa Nguyen, Cecilia Orr, Fucheng Zhang, Ilia Zavialov
  • Process for preparing xanthine phosphodiesterase V inhibitors and precursors thereof
    Patent number: 7074923
    Abstract: A process for preparing xanthine phosphodiesterase V inhibitors, and compounds utilized in said process.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: July 11, 2006
    Assignee: Schering Corporation
    Inventors: Vilas A. Dahanukar, Hoa N. Nguyen, Cecilia A. Orr, Fucheng Zhang, Ilia A. Zavialov
  • Process and intermediates for the preparation of 3-(amino)-3-cyclobutylmethyl-2-hydroxy-propionamide or salts thereof
    Publication number: 20060030734
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I: and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Application
    Filed: September 27, 2005
    Publication date: February 9, 2006
    Inventors: Minzhang Chen, Michael Green, Fucheng Zhang
  • Process and intermediates for the preparation of 3-(amino)-3-cyclobutylmethyl-2-hydroxy-propionamide or salts thereof
    Patent number: 6992220
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I: and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: January 31, 2006
    Assignee: Schering Corporation
    Inventors: Minzhang Chen, Michael D. Green, Fucheng Zhang
  • Process and intermediates for the preparation of 3-(amino)-3-cyclobutylmethyl-2-hydroxy-propionamide or salts thereof
    Publication number: 20050020689
    Abstract: In one embodiment, the present application relates to a process of making a compound of formula I: and to certain intermediate compounds that are made within the process of making the compound of formula I.
    Type: Application
    Filed: June 15, 2004
    Publication date: January 27, 2005
    Inventors: Minzhang Chen, Michael Green, Fucheng Zhang
  • Process for preparing xanthine phosphodiesterase V inhibitors and precursors thereof
    Publication number: 20030232987
    Abstract: A process for preparing xanthine phosphodiesterase V inhibitors, and compounds utilized in said process. The process includes a five-step methodology for efficient synthesis of Compound 5 without intermediate purifications or separations, a dihalogenation step to synthesize Compound 7, and a coupling reaction to produce Compound 9.
    Type: Application
    Filed: May 30, 2003
    Publication date: December 18, 2003
    Applicant: SCHERING CORPORATION
    Inventors: Vilas A. Dahanukar, Hoa N. Nguyen, Cecilia A. Orr, Fucheng Zhang, Ilia A. Zavialov