Patents by Inventor Lijun Sun

Lijun Sun 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).

  • Publication number: 20100093828
    Abstract: Disclosed are compounds of formula (IA), formula (IV) or formula (V), and pharmaceutical compositions containing them which are useful for treating a subject with a proliferative disorder, such as cancer. The disclosed compounds and pharmaceutical compositions are also useful for treating disorders responsive to Hsp70 induction and/or natural killer induction.
    Type: Application
    Filed: August 20, 2007
    Publication date: April 15, 2010
    Inventors: Keizo Koya, Lijun Sun, Shoujun Chen, Jun Jiang
  • Patent number: 7696202
    Abstract: The invention relates to heterocyclic compounds, compositions including the compounds and methods of using and methods of making thereof. The compounds (and compositions) are useful, inter alia, in modulating IL-12 production and processes mediated by IL-12.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: April 13, 2010
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Lijun Sun, Elena Kostik, Teresa Przewloka, Howard P. Ng, Dinesh Chimmanamada, Zachary Demko
  • Publication number: 20100081635
    Abstract: Disclosed are compounds of formulae (I), (III), (IV), (VII), (X), (XI), (XII), (XIII) and (XIV), wherein the variabables are as defined in the claims, and methods of using compounds of the invention for treating a subject with a proliferative disorder, such as cancer, and methods for treating disorders responsive to Hsp70 induction and/or natural killer induction. Also disclosed are pharmaceutical compositions comprising compounds of the invention and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: August 20, 2007
    Publication date: April 1, 2010
    Inventors: Shoujun Chen, Keizo Koya, Zachary Demko, Lijun Sun
  • Patent number: 7687498
    Abstract: This invention features compounds of formula (I): pharmaceutical compositions of the compounds, and methods of using the compounds for the treatment of, inter alia, IL-12-related diseases and disorders.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: March 30, 2010
    Assignee: Synta Pharmaceuticals Corporation
    Inventors: Mitsunori Ono, Lijun Sun, Yumiko Wada, Teresa Przewloka, Hao Li, Howard P. Ng, Zachary Demko
  • Patent number: 7671092
    Abstract: Disclosed is a compound represented by the Structural Formula (I): Y is a covalent bond, a phenylene group or 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 and R2 are independently an aryl group or a substituted aryl group, R3 and R4 are independently —H, an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group. R5-R6 are independently —H, an aliphatic group, a substituted aliphatic group, an aryl group or a substituted aryl group. R7 and R8 are each independently —H, an aliphatic or substituted aliphatic group, or R7 is —H and R8 is a substituted or unsubstituted aryl group, or, R7 and R8, taken together, are a C2-C6 substituted or unsubstituted alkylene group. Z is ?O or ?S.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: March 2, 2010
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Keizo Koya, Lijun Sun, Shoujun Chen, Noriaki Tatsuta, Yaming Wu, Mitsunori Ono
  • Patent number: 7652168
    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: August 29, 2008
    Date of Patent: January 26, 2010
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Shoujun Chen, Lijun Sun, Zhi-Qiang Xia, Keizo Kova, Mitsunori Ono
  • Patent number: 7645904
    Abstract: Disclosed herein are methods of purifying a bis(thio-hydrazide amides) compounds of the following structural formula: wherein R1, R2, R3, R4, R7, R8, Z, and Y are defined herein.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: January 12, 2010
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Shoujun Chen, Zhi-Qiang Xia, Elena I. Kostik, Keizo Koya, Lijun Sun
  • Patent number: 7625724
    Abstract: The present invention includes compositions and methods for the identification, characterization and use of a novel anti-viral protein that includes a mitochondrial anti-viral signaling protein.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: December 1, 2009
    Assignee: Board of Regents, The University of Texas System
    Inventors: Zhijian James Chen, Rashu Seth Bhargava, Lijun Sun, Xiao-Dong Li
  • Publication number: 20090281172
    Abstract: Disclosed are bis(thio-hydrazide amide) disalts, which are represented by Structural Formula (I): Y is a covalent bond or a substituted or unsubstituted straight chained hydrocarbyl group. R1-R4 are independently —H, an aliphatic group, a substituted aliphatic 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. Z is —O or —S. M+ is a pharmaceutically acceptable monovalent cation and M2+ is a pharmaceutically acceptable divalent cation. Also, disclosed are pharmaceutical compositions comprising a bis(thio-hydrazide amide) disalt described above. Further disclosed are methods of treating a subject with cancer. The methods comprise the step of administering an effective amount of a bis(thio-hydrazide amide) disalt described above.
    Type: Application
    Filed: July 15, 2009
    Publication date: November 12, 2009
    Inventors: Keizo Koya, Lijun Sun, Elena Kostik, Farid Vaghefi, Shoujun Chen, Noriaki Tatsuta, Guiqing Liang, Takayo Inoue, Zhi-Qiang Xia
  • Patent number: 7615552
    Abstract: This invention provides fused heterocyclic compounds, pharmaceutical compositions of the compounds, and methods of using the compounds for the treatment of, inter alia, IL-12 related disease and disorders.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: November 10, 2009
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Mitsunori Ono, Lijun Sun, Yumiko Wada, Teresa Przewloka, Hao Li, Zachary Demko, Dinesh Chimmanamada
  • Publication number: 20090270353
    Abstract: The invention relates to compounds of structural formula (I): or a pharmaceutically acceptable salt, solvate, clathrate, and prodrug thereof, wherein Ra, Rb, and R2 are defined herein. These compounds inhibit tubulin polymerization and/or target vasculature and are useful for treating proliferative disorders, such as cancer.
    Type: Application
    Filed: July 2, 2009
    Publication date: October 29, 2009
    Inventors: Lijun Sun, Jun Jiang, Christopher Borella, Shoujun Chen, Keizo Koya
  • Publication number: 20090253694
    Abstract: This invention provides fused heterocyclic compounds, pharmaceutical compositions of the compounds, and methods of using the compounds for the treatment of, inter alia, IL-12 related disease and disorders.
    Type: Application
    Filed: February 20, 2009
    Publication date: October 8, 2009
    Applicant: Synta Pharmaceuticals Corp.
    Inventors: Mitsunori Ono, Lijun Sun, Yumiko Wada, Teresa Przewloka, Hao Li, Zachary Demko, Dinesh Chimmanamada
  • Patent number: 7579503
    Abstract: Disclosed are bis(thio-hydrazide amide) disalts, which are represented by Structural Formula (I): Y is a covalent bond or a substituted or unsubstituted straight chained hydrocarbyl group. R1-R4 are independently —H, an aliphatic group, a substituted aliphatic 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. Z is —O or —S. M+ is a pharmaceutically acceptable monovalent cation and M2+ is a pharmaceutically acceptable divalent cation. Also, disclosed are pharmaceutical compositions comprising a bis(thio-hydrazide amide) disalt described above. Further disclosed are methods of treating a subject with cancer. The methods comprise the step of administering an effective amount of a bis(thio-hydrazide amide) disalt described above.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: August 25, 2009
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Keizo Koya, Lijun Sun, Elena Kostik, Farid Vaghefi, Shoujun Chen, Noriaki Tatsuta, Guiqing Liang, Takayo Inoue, Zhi-Qiang Xia
  • Patent number: 7572821
    Abstract: The invention relates to compounds of structural formula (I): or a pharmaceutically acceptable salt, solvate, clathrate, and prodrug thereof, wherein Ra, Rb, and R2 are defined herein. These compounds inhibit tubulin polymerization and/or target vasculature and are useful for treating proliferative disorders, such as cancer.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: August 11, 2009
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Lijun Sun, Jun Jiang, Christopher Borella, Shoujun Chen, Keizo Koya
  • Publication number: 20090163708
    Abstract: This invention relates to a method of preparing mesylate salts of compounds that inhibit IL-12, IL-23 and/or IL-27 production.
    Type: Application
    Filed: April 26, 2008
    Publication date: June 25, 2009
    Applicant: Synta Pharmaceuticals Corp.
    Inventors: Elena Kostik, Lijun Sun, Keizo Koya, Pierre L. Boulas
  • Publication number: 20090023736
    Abstract: Disclosed are compounds and methods of using compounds of the invention for treating a subject with a proliferative disorder, such as cancer, and methods for treating disorders responsive to Hsp70 induction and/or natural killer induction. Also, disclosed are pharmaceutical compositions comprising compounds of the invention and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: April 28, 2008
    Publication date: January 22, 2009
    Applicant: Synta Pharmaceuticals Corp.
    Inventors: Keizo Koya, Weiwen Ying, Teresa Przewloka, Lijun Sun
  • Publication number: 20090005594
    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: Application
    Filed: August 29, 2008
    Publication date: January 1, 2009
    Inventors: Shoujun Chen, Lijun Sun, Zhi-Qiang Xia, Keizo Kova, Mitsunori Ono
  • Patent number: 7470685
    Abstract: This invention features pyrimidine compounds of formula (I): R1 is in which one of Ra and Rb is H or alkyl, and the other is aryl or heteroaryl optionally substituted with Rd and Rem; each of R2 and R4 is H; R3 is H, alkyl, aryl, heteroaryl, cyclyl, heterocyclyl, or alkylcarbonyl; R5 is H or alkyl; n is 0, 1, 2, 3, 4, 5, or 6; X is NRc; Y is covalent bond, CH2, C(O), C?N—Rc, C?N—ORc, C?N—SRc, O, S, S(O), S(O2), or NRc; Z is N or CH; one of U and V is N, and the other is CRc; and W is O, S, S(O), S(O2), NRc, or NC(O)Rc; in which Rc is H, alkyl, aryl, heteroaryl, cyclyl, heterocyclyl, or alkylcarbonyl; Rd is halogen, CN, alkyl, alkyloxy, alkylcarbonyl, alkyloxycarbonyl, aryloxycarbonyl, heteroaryloxycarbonyl, hydroxyalkyl, alkylamino, or alkylaminocarbonyl; Re is halogen, CN, hydroxyl, alkyl, aryl, heteroaryl, alkoxyl, aryloxyl, or heteroaryloxyl; and m is 0, 1, 2, 3, or 4. The pyrimidine compounds can be used to treat an IL-12 overproduction-related disorder (e.g.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: December 30, 2008
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Lijun Sun, Mitsunori Ono, Elena Kostik, Yumiko Wada
  • Patent number: 7470681
    Abstract: This invention features pyrimidine compounds of formula (I): R1 is each of R2 and R4 is H; R3 is H, alkyl, aryl, heteroaryl, cyclyl, heterocyclyl, or alkylcarbonyl; R5 is H or alkyl; n is 0, 1, 2, 3, 4, 5, or 6; X is NRc; Y is covalent bond, CH2, C(O), C?N—Rc, C?N—ORc, C?N—SRc, O, S, S(O), S(O2), or NRc; Z is N or CH; one of U and V is N, and the other is CRc; and W is O, S, S(O), S(O2), NRc, or NC(O)Rc; in which each of Ra and Rb, independently, is H, alkyl, aryl, heteroaryl; and Rc is H, alkyl, aryl, heteroaryl, cyclyl, heterocyclyl, or alkylcarbonyl.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: December 30, 2008
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Lijun Sun, Mitsunori Ono, Teresa Przewloka, Elena Kostik, Yumiko Wada
  • Patent number: 7465725
    Abstract: This invention features pyrimidine compounds of formula (I): R1 is aryl, or heteroaryl; each of R2 and R4, independently, is Rc, halogen, nitro, cyano, isothionitro, SRc, or ORc; or R2 and R4, taken together, is carbonyl; R3 is Rc, alkenyl, alkynyl, ORc, OC(O)Rc, SO2Rc, S(O)Rc, S(O2)NRcRd, SRc, NRcRd, NRcCORd, NRcC(O)ORd, NRcC(O)NRcRd, NRcSO2Rd, CORc, C(O)ORc, or C(O)NRcRd; R5 is H or alkyl; n is 0, 1, 2, 3, 4, 5, or 6; X is O, S, S(O), S(O2), or NRc; Y is a covalent bond, CH2, C(O), C?N—Rc, C?N—ORc, C?N—SRc, O, S, S(O), S(O2), or NRc; Z is N or CH; one of U and V is N, and the other is CRc; and W is O, S, S(O), S(O2), NRc, or NC(O)Rc; in which each of Ra and Rb, independently, is H, alkyl, aryl, heteroaryl; and each of Rc and Rd, independently, is H, alkyl, aryl, heteroaryl, cyclyl, heterocyclyl, or alkylcarbonyl.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: December 16, 2008
    Assignee: Synta Pharmaceuticals Corp.
    Inventors: Mitsunori Ono, Lijun Sun, Teresa Przewloka, Shijie Zhang, Elena Kostik, Weiwen Ying, Yumiko Wada, Keizo Koya