Patents by Inventor Ligong Liu

Ligong Liu 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).

  • Linked cyclitols and their polysulfated derivatives
    Patent number: 7173019
    Abstract: The invention relates to compounds of the following formula (I). In these compounds, R1, R2, R3 and R4 are each independently a substituted or unsubstituted cyclitol with a ring comprising six carbon atoms, or hydrogen, substituted or unsubstituted alkyl, cycloalkyl, aryl, acyl, alkyloxycarbonyl, or alkylaminocarbonyl. At least two of R1, R2, R3 and R4 comprise the substituted or unsubstituted cyclitol. The linker can be any one of the following: —(CH2)w—, —(CH2)x—C6H4—(CH2)x—, —(CH2)y—NR5—(CH2)y—, and —(CH2)z—HCR6—(CH2)z—; wherein: w, x, y and z are independently an integer having a value of 0–10; R5 is a substituted or unsubstituted cyclitol with a ring comprising six carbon atoms; and, R6 is —OH, —OSO3Na, —OSO3Na substituted with alkyl, cycloalkyl or aryl, or substituted or unsubstituted alkyl, cycloalkyl or aryl. The compounds can also include substituted or unsubstituted cyclitol carbamides with the linker bond at the carbamide nitrogen.
    Type: Grant
    Filed: July 4, 2002
    Date of Patent: February 6, 2007
    Assignee: The Australian National University
    Inventors: Martin Gerhardt Banwell, Ligong Liu, Christopher Richard Parish, Craig Geoffrey Freeman
  • Derivatives of monosaccharides for drug discovery
    Publication number: 20060167237
    Abstract: New compounds and methods for the preparation of combinatorial libraries of potentially biologically active compounds are based on monosaccharides of formula I being a derivative of a furanose or pyranose form of a monosaccharide,
    Type: Application
    Filed: August 8, 2003
    Publication date: July 27, 2006
    Applicant: ALCHEMIA LIMITED
    Inventors: Michael West, Peter Andrews, Tracie Ramsdale, Wim Meutermans, Giang Thanh Le, Chris Clark, Giovanni Abbenante, Ligong Liu
  • Linked cyclitols and their polysulfated derivatives
    Publication number: 20040019021
    Abstract: The invention relates to compounds of the following formula (I). In these compounds, R1, R2, R3 and R4 are each independently a substituted or unsubstituted cyclitol with a ring comprising six carbon atoms, or hydrogen, substituted or unsubstituted alkyl, cycloalkyl, aryl, acyl, alkyloxycarbonyl, or alkylaminocarbonyl. At least two of R1, R2, R3 and R4 comprise the substituted or unsubstituted cyclitol. The linker can be any one of the following: —(CH2)w—, —(CH2)x—C6H4—(CH2)x—, —(CH2)y—NR5—(CH2)y—, and —(CH2)z—HCR6—(CH2)z—; wherein: w, x, y and z are independently an integer having a value of 0-10; R5 is a substituted or unsubstituted cyclitol with a ring comprising six carbon atoms; and, R6 is —OH, —OSO3Na, —OSO3Na substituted with alkyl, cycloalkyl or aryl, or substituted or unsubstituted alkyl, cycloalkyl or aryl.
    Type: Application
    Filed: April 8, 2003
    Publication date: January 29, 2004
    Inventors: Martin Gerhardt Banwell, Ligong Liu, Christopher Richard Parish, Craig Geoffrey Freeman