Patents by Inventor Shuguang Zhu

Shuguang Zhu 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: 20230234956
    Abstract: A process is provided for making a WEE1 inhibitor of the formula (1A) useful in the treatment of conditions characterized by excessive cellular proliferation, such as cancer. In some embodiments, processes are provided for making intermediate compounds of the formulae (3), (5) and (6) as defined herein.
    Type: Application
    Filed: June 9, 2021
    Publication date: July 27, 2023
    Inventors: Peter Qinhua Huang, Chad Daniel Hopkins, Brant Clayton Boren, Sunny Abraham, Kevin Duane Bunker, Sobhana Babu Boga, Shuguang Zhu, Tao Wu, Benjamin Pratt
  • Publication number: 20230212118
    Abstract: Described herein is a method for obtaining a selective estrogen receptor degrader, and compounds used in preparing the selective estrogen receptor degrader.
    Type: Application
    Filed: April 21, 2021
    Publication date: July 6, 2023
    Inventors: Peter Qinhua Huang, Sayee Gajanan Hegde, Kevin Duane Bunker, John Knight, Joseph Robert Pinchman, Aditya Krishnan Unni, Rakesh Kumar Sit, Shuguang Zhu, Chad Daniel Hopkins, Ian Scott
  • Publication number: 20140303182
    Abstract: A lacate salt of a compound of Formula I or a tautomer of the compound, wherein Formula I has the following structure and R1-R9 and R12-R14 are as defined herein
    Type: Application
    Filed: March 17, 2014
    Publication date: October 9, 2014
    Applicant: NOVARTIS AG
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Timothy Machajewski, David Ryckman, Xiao Shang, Shuguang Zhu, Augustus Okhamate, Marc S. Tesconi
  • Patent number: 8614216
    Abstract: The present invention relates to non-hydrate crystalline forms of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-quinolin-2-one lactic acid salts, solid pharmaceutical formulations containing the same and methods of use. The present invention also relates to crystalline hydrates of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-l-yl)-lH-benzimidazol-2-yl]-lH-quinolin-2-one lactic acid salts, pharmaceutical formulations containing the same and methods of use related thereto. The present invention further relates to crystalline solvates of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-l-yl)-lH-benzimidazol-2-yl]-lH-quinolin-2-one lactic acid salts.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 24, 2013
    Assignee: Novartis AG
    Inventors: Augustus O Okhamafe, Joyce Chou, Rampurna Gullapalli, Eric Harwood, David Ryckman, Shuguang Zhu, Xiao Shang
  • Publication number: 20130338171
    Abstract: A lacate salt of a compound of Formula I or a tautomer of the compound, wherein Formula I has the following structure and R1-R9 and R12-R14 are as defined herein
    Type: Application
    Filed: August 1, 2013
    Publication date: December 19, 2013
    Applicant: Novartis AG
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Timothy Machajewski, David Ryckman, Xiao Shang, Shuguang Zhu, Augustus Okhamafe, Marc S. Tesconi
  • Publication number: 20130018058
    Abstract: A lacate salt of a compound of Formula I or a tautomer of the compound, wherein Formula I has the following structure and R1-R9 and R12-R14 are as defined herein
    Type: Application
    Filed: December 2, 2011
    Publication date: January 17, 2013
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Timothy Machajewski, David Ryckman, Xiao Shang, Shuguang Zhu, Augustus O. Okhamafe, Marc S. Tesconi
  • Publication number: 20120277434
    Abstract: A method of synthesizing a substituted or unsubstituted 4-amino-3-benzimidazolyl quinolinone compound includes reacting a first compound having the formula I with a second compound having the formula II in a suitable solvent in the presence of a sodium or potassium salt of a base.
    Type: Application
    Filed: July 2, 2012
    Publication date: November 1, 2012
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Timothy MacHajewski, David Ryckman, Xiao Shang, Shuguang Zhu, Augustus O. Okhamafe, Marc S. Tesconi
  • Publication number: 20120208825
    Abstract: The present invention relates to non-hydrate crystalline forms of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-quinolin-2-one lactic acid salts, solid pharmaceutical formulations containing the same and methods of use. The present invention also relates to crystalline hydrates of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-l-yl)-lH-benzimidazol-2-yl]-lH-quinolin-2-one lactic acid salts, pharmaceutical formulations containing the same and methods of use related thereto. The present invention further relates to crystalline solvates of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-l-yl)-lH-benzimidazol-2-yl]-lH-quinolin-2-one lactic acid salts.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 16, 2012
    Inventors: Augustus O. Okhamafe, Joyce Chou, Rampurna Gullapalli, Eric Harwood, David Ryckman, Shuguang Zhu, Xiao Shang
  • Patent number: 8222413
    Abstract: A method for synthesizing a heterocyclic compound includes: reacting 1-methylpiperazine with 5-chloro-2-nitroaniline at an internal temperature sufficient to provide a compound of Formula VIH The 1-methylpiperazine and the 5-chloro-2-nitroaniline are reacted in a solvent that comprises water in an amount greater than 50 percent by volume based on the amount of the solvent and/or are reacted in a solvent that comprises an organic solvent component that has a boiling point of greater than 100° C. at atmospheric pressure.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: July 17, 2012
    Assignee: Novartis AG
    Inventors: Gabriel Galvin, Eric Harwood, David Ryckman, Shuguang Zhu
  • Publication number: 20110178097
    Abstract: The present invention relates to non-hydrate crystalline forms of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-quinolin-2-one lactic acid salts, solid pharmaceutical formulations containing the same and methods of use. The present invention also relates to crystalline hydrates of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-quinolin-2-one lactic acid salts, pharmaceutical formulations containing the same and methods of use related thereto. The present invention further relates to crystalline solvates of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1H-quinolin-2-one lactic acid salts.
    Type: Application
    Filed: May 23, 2006
    Publication date: July 21, 2011
    Applicant: NOVARTIS AG
    Inventors: Augustus O. Okhamafe, Joyce Chou, Rampurna Gullapalli, Eric Harwood, David Ryckman, Shuguang Zhu, Xiao Shang
  • Publication number: 20110046376
    Abstract: A method for synthesizing a heterocyclic compound includes: reacting 1-methylpiperazine with 5-chloro-2-nitroaniline at an internal temperature sufficient to provide a compound of Formula VIH The 1-methylpiperazine and the 5-chloro-2-nitroaniline are reacted in a solvent that comprises water in an amount greater than 50 percent by volume based on the amount of the solvent and/or are reacted in a solvent that comprises an organic solvent component that has a boiling point of greater than 100° C. at atmospheric pressure.
    Type: Application
    Filed: May 17, 2006
    Publication date: February 24, 2011
    Applicant: NOVARTIS AG
    Inventors: Gabriel Galvin, Eric Harwood, David Ryckman, Shuguang Zhu
  • Patent number: 7838527
    Abstract: Methods of treating cancer using 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]quinolin-2(1H)-one are provided. In particular, the methods are effective for the treatment of solid tumors or leukemias, including prostate, colorectal, breast, multiple myeloma, pancreatic, small cell carcinoma, acute myelogenous leukemia, chronic myelogenous leukemia, or myelo-proliferative disease. Further provided are methods of measuring the amount of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]quinolin-2(1H)-one and determining a metabolic profile therefore.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: November 23, 2010
    Assignee: Novartis Vaccines and Diagnostics, Inc.
    Inventors: Alison Hannah, Eric Harwood, Peter Haroldsen, Carla Heise, Timothy Machajewski, Emil Samara, Xiao Shang, Jayesh Vora, Shuguang Zhu
  • Patent number: 7825132
    Abstract: Methods of inhibiting fibroblast growth factor receptor 3 and treating various conditions mediated by fibroblast growth factor receptor 3 are provided that include administering to a subject a compound of Structure I, a pharmaceutically acceptable salt thereof, a tautomer thereof, or a pharmaceutically acceptable salt of the tautomer. Compounds having the Structure I have the following structure where and have the variables described herein. Such compounds may be used to prepare medicaments for use in inhibiting fibroblast growth factor receptor 3 and for use in treating conditions mediated by fibroblast growth factor receptor 3 such as multiple myeloma.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: November 2, 2010
    Assignee: Novartis Vaccines and Diagnostics, Inc.
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Carla C. Heise, Timothy D. Machajewski, David Ryckman, Xiao Shang, Marion Wiesmann, Shuguang Zhu
  • Patent number: 7696372
    Abstract: This invention relates to a process for preparing R-gossypol L-phenylalaninol dienamine using non-chromatographic purification methods. In particular, the invention is directed to resolution of R- and S-gossypol L-phenylalaninol dienamine by crystallization. R-gossypol L-phenylalaninol dienamine is a useful intermediate for the preparation of R-(?)-gossypol and R-(?)-gossypol acetic acid co-crystal. R-(?)-Gossypol acetic acid and its co-crystal is useful for inducing apoptosis in cells and for sensitizing cells to the induction of apoptotic cell death.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: April 13, 2010
    Assignee: Ascenta Therapeutics, Inc.
    Inventors: Ming Guo, Shuguang Zhu, Laure Navarre, Régis Périon
  • Publication number: 20090181979
    Abstract: A lacate salt of a compound of Formula I or a tautomer of the compound, wherein Formula I has the following structure and R1-R9 and R12-R14 are as defined herein
    Type: Application
    Filed: March 4, 2009
    Publication date: July 16, 2009
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Timothy Machajewski, David Ryckman, Xiao Shang, Shuguang Zhu, Augustus O. Okhamafe, Marc S. Tesconi
  • Publication number: 20090088590
    Abstract: This invention relates to a process for preparing R-gossypol L-phenylalaninol dienamine using non-chromatographic purification methods. In particular, the invention is directed to resolution of R- and S-gossypol L-phenylalaninol dienamine by crystallization. R-gossypol L-phenylalaninol dienamine is a useful intermediate for the preparation of R-(?)-gossypol and R-(?)-gossypol acetic acid co-crystal. R-(?)-Gossypol acetic acid and its co-crystal is useful for inducing apoptosis in cells and for sensitizing cells to the induction of apoptotic cell death.
    Type: Application
    Filed: October 1, 2008
    Publication date: April 2, 2009
    Applicant: Ascenta Therapeutics, Inc.
    Inventors: Ming Guo, Shuguang Zhu, Laure Navarre, Regis Perion
  • Publication number: 20050261307
    Abstract: Methods of inhibiting fibroblast growth factor receptor 3 and treating various conditions mediated by fibroblast growth factor receptor 3 are provided that include administering to a subject a compound of Structure I, a pharmaceutically acceptable salt thereof, a tautomer thereof, or a pharmaceutically acceptable salt of the tautomer. Compounds having the Structure I have the following structure where and have the variables described herein. Such compounds may be used to prepare medicaments for use in inhibiting fibroblast growth factor receptor 3 and for use in treating conditions mediated by fibroblast growth factor receptor 3 such as multiple myeloma.
    Type: Application
    Filed: November 5, 2004
    Publication date: November 24, 2005
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Carla Heise, Timothy Machajewski, David Ryckman, Xiao Shang, Marion Wiesmann, Shuguang Zhu
  • Publication number: 20050209247
    Abstract: A lacate salt of a compound of Formula I or a tautomer of the compound, wherein Formula I has the following structure and R1-R9 and R12-R14 are as defined herein
    Type: Application
    Filed: November 5, 2004
    Publication date: September 22, 2005
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Timothy Machajewski, David Ryckman, Xiao Shang, Shuguang Zhu, Augustus Okhamafe, Marc Tesconi
  • Publication number: 20050137399
    Abstract: A method of synthesizing a substituted or unsubstituted 4-amino-3-benzimidazolyl quinolinone compound includes reacting a first compound having the formula I with a second compound having the formula II in a suitable solvent in the presence of a sodium or potassium salt of a base.
    Type: Application
    Filed: November 5, 2004
    Publication date: June 23, 2005
    Inventors: Shaopei Cai, Joyce Chou, Eric Harwood, Timothy Machajewski, David Ryckman, Xiao Shang, Shuguang Zhu, Augustus Okhamafe, Marc Tesconi
  • Publication number: 20040220196
    Abstract: Methods of treating cancer using 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1 -yl)-1H-benzimidazol-2-yl]quinolin-2(1H)-one are provided. In particular, the methods are effective for the treatment of solid tumors or leukemias, including prostate, colorectal, breast, multiple myeloma, pancreatic, small cell carcinoma, acute myelogenous leukemia, chronic myelogenous leukemia, or myelo-proliferative disease. Further provided are methods of measuring the amount of 4-amino-5-fluoro-3-[6-(4-methylpiperazin-1 -yl)-1H-benzimidazol-2-yl]quinolin-2(1H)-one and determining a metabolic profile therefore.
    Type: Application
    Filed: November 12, 2003
    Publication date: November 4, 2004
    Applicant: Chiron Corporation
    Inventors: Alison Hannah, Eric Harwood, Peter Haroldsen, Carla Heise, Timothy Machajewski, Emil Samara, Xiao Shang, Jayesh Vora, Shuguang Zhu