Patents by Inventor Christopher M. Nielsen

Christopher M. Nielsen 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).

  • Synthesis of piperidine and piperazine compounds as CCR5 antagonists
    Patent number: 6992189
    Abstract: In its several embodiments, this invention discloses novel processes to prepare the compounds of formula II and formula IV:
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: January 31, 2006
    Assignee: Schering Corporation
    Inventors: William Leong, Minzhang Chen, Bosco A. D'sa, Man Zhu, Tong Xiao, Xiongwei Shi, Suhan Tang, Dinesh Gala, Andrew J. Goodman, Christopher M. Nielsen, Gary M. Lee, Juan A. Gamboa, Andrew D. Jones
  • Synthesis of piperidine and piperazine compounds as CCR5 antagonists
    Publication number: 20040024217
    Abstract: In its several embodiments, this invention discloses novel processes to prepare the compounds of formula II and formula IV: 1
    Type: Application
    Filed: March 27, 2003
    Publication date: February 5, 2004
    Applicant: Schering Corporation
    Inventors: William Leong, Minzhang Chen, Bosco A. D'sa, Man Zhu, Tong Xiao, Xiongwei Shi, Suhan Tang, Dinesh Gala, Andrew J. Goodman, Christopher M. Nielsen, Gary M. Lee, Juan A. Gamboa, Andrew D. Jones
  • Process for preparing intermediates for the synthesis of antifungal agents
    Patent number: 5756830
    Abstract: A process for producing a crystalline chiral hydroxy ester of the formula: ##STR1## is disclosed. The process comprises reacting a diol of the formula: ##STR2## with an effective amount of isobutryic anhydride and an effective amount of a lipase enzyme in an effective amount of acetonitrile, said reaction being conducted at a low temperature, and wherein X.sup.1 and X.sup.2 are each independently selected from F or Cl.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: May 26, 1998
    Assignee: Schering Corporation
    Inventors: Christopher M. Nielsen, Anantha Sudhakar