Patents by Inventor Claus Age Bretting

Claus Age Bretting 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).

  • Epimerisation of Allylic Alcohols
    Publication number: 20070255066
    Abstract: The present invention relates to processes for epimerising alcohols of compounds having a hydroxyl substituent on an asymmetric allylic carbon, such as compounds useful for the synthesis of vitamin D analogues where the epimeric hydroxyl substituent is at the 24 position. The Invention further relates to methods of producing intermediates useful for the synthesis of calcipotriol by said epimerisation processes.
    Type: Application
    Filed: August 22, 2005
    Publication date: November 1, 2007
    Applicant: Leo Pharma A/S
    Inventors: Hendrik Pedersen, Claus Age Bretting, Ernst Binderup