Patents by Inventor Luning Han

Luning Han 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).

  • Methods of separating FTC isomers and derivatives thereof
    Patent number: 6752929
    Abstract: The present invention relates to a method of preparing enantiomers and diastereomers of a 2′,3′-dideoxy-5-fluoro-3′thiocytadine (FTC) or a derivative thereof as represented by the structural formula (I), wherein R is H, a substituted or unsubstituted organic acid radical, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted heteroarakyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstitued cycloalkylalkyl group, a substituted or unsubstituted heterocycloalkylalkyl group, a sugar or a protecting group.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: June 22, 2004
    Assignee: Johnson Matthey Pharmaceutical Materials, Inc.
    Inventors: Salah Zahr, David A. Swanson, Adel M. Moussa, Luning Han
  • Methods of separating FTC isomers and derivatives thereof
    Patent number: 6541631
    Abstract: The present invention relates to a method of preparing enantiomers and diastereomers of a 2′,3′-dideoxy-5-fluoro-3′thiocytadine (FTC) or a derivative thereof as represented by the following structural formula: In Structural Formula I, R is H, a substituted or unsubstituted organic acid radical, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted heteroaralkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted cycloalkylalkyl, a substituted or unsubstituted heterocycloalkylalkyl, a sugar or a protecting group.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: April 1, 2003
    Assignee: Pharma-Eco Laboratories, Inc.
    Inventors: Salah Zahr, David A. Swanson, Adel M. Moussa, Luning Han