Patents by Inventor David Wayne Ray, Jr.

David Wayne Ray, Jr. 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 production of oxandrolone
    Patent number: 7009063
    Abstract: The present invention relates to a process for the synthesis of oxandrolone from mestanolone. The process comprises the steps of: (a) oxidizing mestanolone to form 17?-hydroxy-17?-methyl-5?-androst-1-en-3-one; (b) hydroxylating the 17?-hydroxy-17?-methyl-5?-androst-1-en-3-one to form 1?, 2?, 17?-trihydroxy-17?-methylandrostan-3-one; (c) cleaving the 1?, 2?, 17?-trihydroxy-17?-methylandrostan-3-one to form 17?-hydroxy-17?-methyl-1-oxo-1,2,-seco-A-nor-5?-androstan-2-oic acid; and (d) reducing the 17?-hydroxy-17?-methyl-1-oxo-1,2,-seco-A-nor-5?-androstan-2-oic acid to form oxandrolone.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: March 7, 2006
    Assignee: Barr Laboratories, Inc.
    Inventors: Shaileshkumar Ramanlal Desai, David Wayne Ray, Jr., Yousry A. Sayed
  • Process for the production of oxandrolone
    Patent number: 6787659
    Abstract: The present invention relates to a process for the synthesis of oxandrolone from mestanolone. The process comprises the steps of: (a) oxidizing mestanolone to form 17&bgr;-hydroxy-17&agr;-methyl-5&agr;-androst-1-en-3-one; (b) hydroxylating the 17&bgr;-hydroxy-17&agr;-methyl-5&agr;-androst-1-en-3-one to form 1&agr;, 2&agr;, 17&bgr;-trihydroxy-17&agr;-methylandrostan-3-one; (c) cleaving the 1&agr;, 2&agr;, 17&bgr;-trihydroxy-17&agr;-methylandrostan-3-one to form 17&bgr;-hydroxy-17&agr;-methyl-1-oxo-1,2,-seco-A-nor-5&agr;-androstan-2-oic acid; and (d) reducing the 17&bgr;-hydroxy-17&agr;-methyl-1-oxo-1,2,-seco-A-nor-5&agr;-androstan-2-oic acid to form oxandrolone.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: September 7, 2004
    Assignee: Barr Laboratories, Inc.
    Inventors: Shaileshkumar Ramanlal Desai, David Wayne Ray, Jr., Yousry A. Sayed