Patents by Inventor Eberhard Busker

Eberhard Busker 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).

  • Optically active proline derivative, process for its production and use
    Patent number: 4469875
    Abstract: The invention is directed to optically active proline derivative of the general formula: ##STR1## in which X is a hydrogen atom or a hydroxyl group and R is a hydrogen atom, an unsubstituted or alkyl group substituted phenyl group or a straight chain or branched alkyl group having 1 to 20 carbon atoms and a process for its production by reacting an enantiomerically pure proline or 4-hydroxy-proline as a solution in an alkanol having 1 to 4 carbon atoms with 0.9 to 2 times the molar amount of an alkali metal alcoholate corresponding to the alkanol and 1 to 3 times the molar amount of an epoxide of the general formula ##STR2## in which R is as defined above. The optically active proline derivative of general formula (I) can be used in the form of metal ion chelate complexes as the chiral stationary phase in the separation of enantiomers by means of liquid chromatography.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: September 4, 1984
    Assignee: Degussa Aktiengesellschaft
    Inventors: Eberhard Busker, Jurgen Martens, Regina Steigerwald, Horst Weigel