Patents by Inventor Meinholf Lange

Meinholf Lange 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 PHOSPHITYLATED COMPOUNDS USING A QUATERNARY HETEROCYCLIC ACTIVATOR
    Publication number: 20130281682
    Abstract: A method for preparing a phosphitylated compound comprising the step of:—reacting a hydroxyl containing compound with a phosphitylating agent in the presence of an activator having the formula (I) wherein R=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl R1, R2=either H or form a 5 to 6-membered ring together. X1, X2=independently either N or CH Y=H or Si(R4)3, with R4=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl B=deprotonated acid. The hydroxyl containing compound is preferably a sugar moiety or a nucleoside or an oligomer derived therefrom.
    Type: Application
    Filed: June 20, 2013
    Publication date: October 24, 2013
    Applicant: Girindus AG
    Inventors: Meinholf Lange, Andreas Schönberger, Christina Kirchhoff, Olaf Grössel, Nadja Omelcenko, Andreas Hohlfeld, Fritz Link
  • Synthesis of Phosphitylated Compounds Using a Quaternary Heterocyclic Activator
    Publication number: 20100081802
    Abstract: A method for preparing a phosphitylated compound comprising the step of: -reacting hydroxyl containing compound with a phosphitylating agent in the presence of an activator having the formula (I) wherein R=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl R1, R2=either H or form a 5 to 6-membered ring together. X1, X2=independently either N or CH Y?H or Si(R4)3, with R4=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl B=deprotonated acid. The hydroxyl containing compound is preferably a sugar moiety or a nucleoside or an oligomer derived therefrom.
    Type: Application
    Filed: December 15, 2005
    Publication date: April 1, 2010
    Applicant: Girindus AG
    Inventors: Meinholf Lange, Andreas Schönberger, Christina Kirchhoff, Olaf Grössel, Nadja Omelcenko, Andreas Hohlfeld, Fritz Link