Patents by Inventor Zhi-Qiang Xia

Zhi-Qiang Xia 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).

  • Patent number: 7001923
    Abstract: One embodiment of the present invention is a compound represented by the Structural Formula (I): Y is a covalent bond of a substituted or unsubstituted straight chained hydrocarbyl group. In addition, Y, taken together with both >C=Z groups to which it is bonded, is a substituted or unsubstituted aromatic group. Preferably, Y is a covalent bond or —C(R7R8)—. R1 is an aliphatic group, a substituted aliphatic group, a non-aromatic hetereocyclic group, or a substituted non-aromatic hetereocyclic group, R2–R4 are independently —H, an aliphatic group, a substituted aliphatic group, a non-aromatic hetereocyclic group, a substituted non-aromatic hetereocyclic group, an aryl group or a substituted aryl group, or R1 and R3 taken together with the carbon and nitrogen atoms to which they are bonded, and/or R2 and R4 taken together with the carbon and nitrogen atoms to which they are bonded, form a non-aromatic heterocyclic ring optionally fused to an aromatic ring.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: February 21, 2006
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Keizo Koya, Lijun Sun, Shoujun Chen, Noriaki Tatsuta, Yaming Wu, Mitsunori Ono, Zhi-Qiang Xia
  • Publication number: 20060004044
    Abstract: Disclosed is an anti-cancer compound represented by Structural Formula (I): The variables in Structural Formula (I) are described hereinbelow. Also disclosed is a pharmaceutical composition comprising a pharmaceutically acceptable carrier or diluent and a compound represented by Structural Formula (I) (preferably an effective amount). Also disclosed is a method of treating a subject with cancer by administering to the subject an effective amount of a compound represented by Structural Formula (I).
    Type: Application
    Filed: May 24, 2005
    Publication date: January 5, 2006
    Applicant: Synta Pharmaceuticals Corp.
    Inventors: Keizo Koya, Lijun Sun, Mitsunori Ono, Guiqing Liang, David James, Hao Li, Zhi-Qiang Xia
  • Patent number: 6958348
    Abstract: Disclosed is an anti-cancer compound represented by Structural Formula (I): The variables in Structural Formula (I) are described hereinbelow. Also disclosed is a pharmaceutical composition comprising a pharmaceutically acceptable carrier or diluent and a compound represented by Structural Formula (I) (preferably an effective amount). Also disclosed is a method of treating a subject with cancer by administering to the subject an effective amount of a compound represented by Structural Formula (I).
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: October 25, 2005
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Keizo Koya, Lijun Sun, Mitsunori Ono, Guiqing Liang, David James, Hao Li, Zhi-Qiang Xia
  • Publication number: 20050203119
    Abstract: This invention relates to dihydropyridine compounds of formula (I): or a pharmaceutically acceptable salt, solvate, clathrate, or prodrug thereof wherein A2, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, and m are defined herein, and compositions comprising such compounds. The invention also relates to methods of preventing or treating metabolic disorders, such as diabetes mellitus, and conditions and complications associated with diabetes mellitus, comprising administering to a subject in need thereof a compound of formula (1) or a composition comprising such a compound. The invention further relates to kits comprising a compound of formula (I).
    Type: Application
    Filed: September 10, 2004
    Publication date: September 15, 2005
    Inventors: Mitsunori Ono, Yumiko Wada, Lijun Sun, Shoujun Chen, Teresa Przewloka, Shijie Zhang, Christopher Borella, Keizo Koya, Kevin Foley, Zhi-Qiang Xia, Hao Li, Dan Zhou
  • Patent number: 6911330
    Abstract: A secoisolanciresinol dehydrogenase protein has been isolated from Forsythia intermedia, together with cDNAs encoding secoisolariciresinol dehydrogenase from this species. Accordingly, isolated DNA sequences are provided which code for the expression of secoisolariciresinol dehydrogenase. In other aspects, the present invention is directed to replicable recombinant cloning vehicles comprising a nucleic acid sequence which codes for a secoisolariciresinol dehydrogenase protein, or to a base sequence sufficiently complementary to at least a portion of a secoisolariciresinol dehydrogenase DNA or RNA to enable hybridization therewith.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: June 28, 2005
    Assignee: Washington State University Research Foundation
    Inventors: Zhi-Qiang Xia, Michael A. Costa, Laurence B. Davin, Norman G. Lewis
  • Patent number: 6825235
    Abstract: Disclosed is a method of preparing a thiohydrazide product compound from a hydrazide starting compound. The hydrazide starting compound is represented by Structural Formula (I): The thiohydrazide product compound is represented by Structural Formula (II): In Structural Formulas (I)-(II), R1 and R2 are independently an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group, or R1 and R2 taken together with the carbon and nitrogen atoms to which they are bonded, form a non-aromatic heterocyclic ring optionally fused to an aromatic ring. When R2 is an aryl group or a substituted aryl group, then R5 is a hydrazine protecting group; and when R2 is an aliphatic or substituted aliphatic group, then R5 is —H or a hydrazine protecting group. R10 is —H or a substituted or unsubstituted alkyl group. The method comprising the step of reacting the starting compound with a thionylating reagent.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: November 30, 2004
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Shoujun Chen, Lijun Sun, Zhi-Qiang Xia, Keizo Koya, Mitsunori Ono
  • Publication number: 20040235909
    Abstract: One embodiment of the present invention is a compound represented by the Structural Formula (I): 1
    Type: Application
    Filed: March 18, 2004
    Publication date: November 25, 2004
    Applicant: Synta Pharmaceuticals, Inc.
    Inventors: Keizo Koya, Lijun Sun, Shoujun Chen, Noriaki Tatsuta, Yaming Wu, Mitsunori Ono, Zhi-Qiang Xia
  • Publication number: 20040229952
    Abstract: Disclosed is a method of preparing a thiohydrazide product compound from a hydrazide starting compound.
    Type: Application
    Filed: March 24, 2004
    Publication date: November 18, 2004
    Applicant: Synta Pharmaceuticals Corp.
    Inventors: Shoujun Chen, Lijun Sun, Zhi-Qiang Xia, Keizo Koya, Mitsunori Ono
  • Publication number: 20040152897
    Abstract: Disclosed are methods of preparing substituted indolizines represented by the following formula: 1
    Type: Application
    Filed: September 11, 2003
    Publication date: August 5, 2004
    Applicant: Synta Pharmaceuticals Corp.
    Inventors: Lijun Sun, Keizo Koya, Zhi-Qiang Xia, Teresa Przewloka, Shijie Zhang, Mitsunori Ono
  • Patent number: 6762204
    Abstract: One embodiment of the present invention is a compound represented by the Structural Formula (I): Y is a covalent bond of a substituted or unsubstituted straight chained hydrocarbyl group. In addition, Y, taken together with both >C═Z groups to which it is bonded, is a substituted or unsubstituted aromatic group. Preferably, Y is a covalent bond or —C(R7R8)—. R1 is an aliphatic group, a substituted aliphatic group, a non-aromatic heterocyclic group, or a substituted non-aromatic heterocyclic group, R2-R4 are independently —H, an aliphatic group, a substituted aliphatic group, a non-aromatic heterocyclic group, a substituted non-aromatic heterocyclic group, an aryl group or a substituted aryl group, or R1 and R3 taken together with the carbon and nitrogen atoms to which they are bonded, and/or R2 and R4 taken together with the carbon and nitrogen atoms to which they are bonded, form a non-aromatic heterocyclic ring optionally fused to an aromatic ring.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: July 13, 2004
    Assignee: Synta Pharmaceuticals, Inc.
    Inventors: Keizo Koya, Lijun Sun, Shoujun Chen, Noriaki Tatsuta, Yaming Wu, Mitsunori Ono, Zhi-Qiang Xia
  • Publication number: 20040116462
    Abstract: This invention relates to indolizine compounds having formula 1
    Type: Application
    Filed: December 12, 2002
    Publication date: June 17, 2004
    Inventors: Mitsunori Ono, Lijun Sun, Zhi Qiang Xia, Hao Li, Shojun Chen, Masazumi Nagai, Rongzhen Lu
  • Publication number: 20030092751
    Abstract: Disclosed is an anti-cancer compound represented by Structural Formula (I): 1
    Type: Application
    Filed: August 29, 2002
    Publication date: May 15, 2003
    Applicant: SBR Pharmaceuticals Corp.
    Inventors: Keizo Koya, Lijun Sun, Mitsunori Ono, Guiqing Liang, David James, Hao Li, Zhi-Qiang Xia
  • Publication number: 20030069225
    Abstract: Disclosed is a method of preparing a thiohydrazide product compound from a hydrazide starting compound.
    Type: Application
    Filed: July 10, 2002
    Publication date: April 10, 2003
    Applicant: Shionogi BioResearch Corp.
    Inventors: Shoujun Chen, Lijun Sun, Zhi-Qiang Xia, Keizo Koya, Mitsunori Ono
  • Publication number: 20030045518
    Abstract: One embodiment of the present invention is a compound represented by the Structural Formula (I): 1
    Type: Application
    Filed: July 10, 2002
    Publication date: March 6, 2003
    Applicant: Shionogi BioResearch Corp.
    Inventors: Keizo Koya, Lijun Sun, Shoujun Chen, Noriaki Tatsuta, Yaming Wu, Mitsunori Ono, Zhi-Qiang Xia
  • Patent number: 5648505
    Abstract: The present invention relates to a process for the preparation of a compound of the formula (VIII) or (IX) useful as precursor for the C-ring in taxanes ##STR1## wherein R' is a C.sub.1 -C.sub.6 -alkyl. The invention further relates to the novel compounds (VIII) and (IX) and to novel intermediates in said process.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: July 15, 1997
    Inventors: Zhi-Qiang Xia, Esko Karvinen, Ari Koskinen