Patents by Inventor Ronald J. Post

Ronald J. Post 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 preparation of 1-(2s,3s)-2-benzhydryl-n-(5- tert-butyl-2-methoxybenzyl)quinuclidin-3-amine
    Publication number: 20090099364
    Abstract: This invention relates to an improved process for the preparation of (2S,3S)-2-benzhydryl-N-(5-tent-butyl-2-methoxybenzyl)quinuclidin-3-amine, (hereinafter “compound of Formula I”) and its pharmaceutically acceptable salts. In particular, the invention is directed to an improved synthesis of the monohydrate citrate salt of the compound of Formula (Ia).
    Type: Application
    Filed: January 26, 2005
    Publication date: April 16, 2009
    Inventors: Patricia A. Basford, Ronald J. Post, Julina D. Smith, Geraldine P. Taber
  • Process for preparing growth hormone secretagogues
    Patent number: 6673929
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, and compounds of Formula III, wherein R1, R2, R3 and Prt are defined as set forth in the specification.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: January 6, 2004
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Charles K. Chiu, Clifford N. Meltz, Ronald J. Post, Peter R. Rose
  • Intermediates and processes for preparing substituted chromanol derivatives
    Publication number: 20030158428
    Abstract: The invention relates to processes for preparing a compound of the formula 1
    Type: Application
    Filed: January 30, 2002
    Publication date: August 21, 2003
    Applicant: Pfizer Inc.
    Inventors: Keith M. Devries, Stephane Caron, Philip D. Hammen, Geraldine P. Taber, John L. Tucker, Peter R. Rose, Ronald J. Post, Brian K. Raymer
  • Process for preparing growth hormone secretagogues
    Publication number: 20030158414
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, 1
    Type: Application
    Filed: October 30, 2002
    Publication date: August 21, 2003
    Inventors: Frank R. Busch, Charles K. Chiu, Clifford N. Meltz, Ronald J. Post, Peter R. Rose
  • Process for preparing growth hormone secretagogues
    Patent number: 6541634
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, and compounds of Formula III, wherein R1, R2, R3 and Prt are defined as set forth in the specification.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: April 1, 2003
    Assignee: Pfizer Inc.
    Inventors: Frank R. Busch, Charles K. Chiu, Clifford N. Meltz, Ronald J. Post, Peter R. Rose
  • Process for preparing growth hormone secretagogues
    Publication number: 20020002283
    Abstract: This invention relates to improved processes for preparing compounds of Formula II, 1
    Type: Application
    Filed: February 1, 2000
    Publication date: January 3, 2002
    Inventors: Frank R Busch, Charles K Chiu, Clifford N Meltz, Ronald J Post, Peter R Rose