Patents by Inventor Lushi Tan

Lushi Tan 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: 10308633
    Abstract: This invention provides novel processes for the preparation of compounds such as 3-[(1S,2S)-2-hydroxycyclohexyl]-6-[(6-methylpyridin-3-yl)methyl]benzo[h]-quinazolin-4(3H)-one, salts and derivatives thereof. The compounds synthesized by the processes of the invention are useful for treating Alzheimer's disease and other diseases (e.g., cognitive impairment, schizophrenia, pain disorders, and sleep disorders) mediated by the muscarinic M1 receptor.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: June 4, 2019
    Assignees: Merck Sharp & Dohme Corp., Merck Sharp & Dohme Limited
    Inventors: Qinghao Chen, Shane W. Krska, Lushi Tan, Peter E. Maligres, Jeremy Scott, Carl Baxter, Gavin William Stewart, Andrew Gibb
  • Publication number: 20180265493
    Abstract: This invention provides novel processes for the preparation of compounds such as 3-[(1S,2S)-2-hydroxycyclohexyl]-6-[(6-methylpyridin-3-yl)methyl]benzo[h]-quinazolin-4(3H)-one, salts and derivatives thereof. The compounds synthesized by the processes of the invention are useful for treating Alzheimer's disease and other diseases (e.g., cognitive impairment, schizophrenia, pain disorders, and sleep disorders) mediated by the muscarinic M1 receptor.
    Type: Application
    Filed: September 26, 2016
    Publication date: September 20, 2018
    Applicants: Merck Sharp & Dohme Corp., Merck Sharp & Dohme Limited.
    Inventors: Qinghao Chen, Shane W. Krska, Lushi Tan, Peter E. Maligres, Jeremy Scott, Carl Baxter, Gavin William Stewart, Andrew Gibb
  • Patent number: 10053466
    Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of: ?and reductive amination of:
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 21, 2018
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
  • Publication number: 20180093992
    Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of: ?and reductive amination of:
    Type: Application
    Filed: December 5, 2017
    Publication date: April 5, 2018
    Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
  • Patent number: 9862725
    Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of, reductive amination of:
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 9, 2018
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
  • Publication number: 20170233382
    Abstract: This invention provides processes for the preparation of verubecestat (Compound of Formula (I)), a potent inhibitor of BACE-1 and BACE-2. In addition, the invention provides certain synthetic intermediates which are useful, among other things, for the preparation of the Compound of Formula (I).
    Type: Application
    Filed: August 10, 2015
    Publication date: August 17, 2017
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Steven P. Miller, Carmela Molinaro, David Thaisrivongs, Feng Xu, Richard Desmond, Hongming Li, Qinghao Chen, Andrew W. Stamford, Zhiguo Jake Song, Lushi Tan
  • Publication number: 20170158701
    Abstract: A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of, reductive amination of:
    Type: Application
    Filed: July 16, 2015
    Publication date: June 8, 2017
    Inventors: John Y. L. Chung, Feng Peng, Yonggang Chen, Amude Mahmoud Kassim, Cheng-yi Chen, Mathew Maust, Mark McLaughlin, Michael J. Zacuto, Qinghao Chen, Lushi Tan, Zhiguo Jake Song, Yang Cao, Feng Xu
  • Patent number: 9527855
    Abstract: A process for the preparation of pyrazolopyrolidines of structural formula I: and W is or P, wherein in P is an amine protecting group. These compounds are useful in the synthesis of dipeptidyl peptidase-IV inhibitors for the treatment of Type 2 diabetes. Also provided are useful intermediates obtained from the process.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: December 27, 2016
    Assignees: Merck Sharp & Dohme Corp., Merck Sharp & Dohme Ltd.
    Inventors: Michael J. Zacuto, Robert F. Dunn, Aaron J. Moment, Jacob M. Janey, David Lieberman, Faye Sheen, Nadine Bremeyer, Jeremy Scott, Jeffrey T. Kuethe, Lushi Tan, Qinghao Chen
  • Publication number: 20160024100
    Abstract: A process for the preparation of pyrazolopyrolidines of structural formula I: and W is or P, wherein in P is an amine protecting group. These compounds are useful in the synthesis of dipeptidyl peptidase-IV inhibitors for the treatment of Type 2 diabetes. Also provided are useful intermediates obtained from the process.
    Type: Application
    Filed: October 2, 2015
    Publication date: January 28, 2016
    Inventors: Michael J. Zacuto, Robert F. Dunn, Aaron J. Moment, Jacob M. Janey, David Lieberman, Faye Sheen, Nadine Bremeyer, Jeremy Scott, Jeffrey T. Kuethe, Lushi Tan, Qinghao Chen
  • Patent number: 9187488
    Abstract: A process for the preparation of pyrazolopyrolidines of structural formula I: and W is or P, wherein in P is an amine protecting group. These compounds are useful in the synthesis of dipeptidyl peptidase-IV inhibitors for the treatment of Type 2 diabetes. Also provided are useful intermediates obtained from the process.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: November 17, 2015
    Assignees: Merck Sharp & Dohme Corp, Merck Sharp & Dohme Ltd.
    Inventors: Michael J. Zacuto, Robert F. Dunn, Aaron J. Moment, Jacob M. Janey, David Lieberman, Faye Sheen, Nadine Bremeyer, Jeremy Scott, Jeffrey T. Kuethe, Lushi Tan, Qinghao Chen
  • Patent number: 8232413
    Abstract: The present invention relates to a process for the production of crystalline particles of a glucagon receptor antagonist compound. The process includes the steps of generating microseeds and subjecting the microseeds to a crystallization process. The resulting crystalline particles have a mean particle size of less than about 100 mm. The present invention also provides for a pharmaceutical composition which includes the crystalline particles produced by the method described herein and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: July 31, 2012
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Benjamin M. Cohen, Daniel J. Kumke, Lushi Tan, Aaron S. Cote
  • Publication number: 20100228036
    Abstract: The invention encompasses a process for making 2-[1-phenyl-5-hydroxy-4alpha-methyl-hexahydrocyclopenta[f]indazol-5-yl]ethyl phenyl derivatives, which are glucocorticoid receptor ligands, useful for the treatment of inflammatory and immunological diseases.
    Type: Application
    Filed: October 20, 2008
    Publication date: September 9, 2010
    Inventors: Qinghao Chen, Shinji Fujimori, Jacob M. Janey, John Limanto, Rafik Naccache, Andrew F. Nolting, Zhigou J. Song, Neil Strotman, Lushi Tan, Mark Weisel
  • Patent number: 7786314
    Abstract: Processes for the preparation of certain [3.1.0]hexane derivatives which are useful as mGluR agonists, and intermediates prepared during such processes.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: August 31, 2010
    Assignee: Taisho Pharmaceutical Co., Ltd
    Inventors: Frederick W. Hartner, Lushi Tan, Nobuyoshi Yasuda, Naoki Yoshikawa
  • Publication number: 20100184995
    Abstract: The present invention relates to a process for the production of crystalline particles of a glucagon receptor antagonist compound. The process includes the steps of generating microseeds and subjecting the microseeds to a crystallization process. The resulting crystalline particles have a mean particle size of less than about 100 mm. The present invention also provides for a pharmaceutical composition which includes the crystalline particles produced by the method described herein and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: September 8, 2008
    Publication date: July 22, 2010
    Inventors: Benjamin M. Cohen, Daniel J. Kumke, Lushi Tan, Aaron S. Cote
  • Patent number: 7709658
    Abstract: The present invention relates to substituted pyrazoles, compositions containing such compounds and methods of treatment. The compounds are glucagon receptor antagonists and thus are useful for treating, preventing or delaying the onset of type 2 diabetes mellitus.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: May 4, 2010
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Lushi Tan, James Christopher McWilliams, Frederick W. Hartner, Naoki Yoshikawa, Wenji Li
  • Publication number: 20090203922
    Abstract: The present invention describes an efficient and economical process for the preparation of a 2,3-disubstituted 2-phenyl-1h-phenantrho[9,10-d]imidazole derivative that is useful for the large scale production of material for preclinical and clinical use. The process of the present invention represents a convergent approach to generate the 2,3-disubstituted 2-phenyl-1h-phenantrho[9,10-d]imidazole derivative in high overall yield. The compound made by the process of the invention is an inhibitor of the microsomal prostaglandin E synthase-1 (mPGES-1) enzyme and is therefore useful to treat pain and/or inflammation from a variety of diseases or conditions, such as osteoarthritis, rheumatoid arthritis and acute or chronic pain.
    Type: Application
    Filed: November 17, 2006
    Publication date: August 13, 2009
    Inventors: Kevin Michael Belyk, Benjamin Dorner, Frederick Hartner, Naoki Yoshikawa, John Limanto, Lushi Tan, Enrique Vazquez, Joseph Payack
  • Publication number: 20090105479
    Abstract: The invention is directed to a compound of the structural formula (22) (22) crystal form of structural formulae (21) and its free acid, pharmaceutical compositions comprising these compounds and methods of preparing and using these compounds.
    Type: Application
    Filed: October 24, 2006
    Publication date: April 23, 2009
    Applicant: MERCK & CO., INC.
    Inventors: Mark Cameron, Frederick W. Hartner, Lushi Tan, Nobuyoshi Yasuda, Naoki Yoshikawa
  • Publication number: 20090054662
    Abstract: The present invention relates to substituted pyrazoles, compositions containing such compounds and methods of treatment. The compounds are glucagon receptor antagonists and thus are useful for treating, preventing or delaying the onset of type 2 diabetes mellitus.
    Type: Application
    Filed: July 21, 2006
    Publication date: February 26, 2009
    Inventors: Lushi Tan, James Christopher McWilliams, Frederick W. Hartner, Naoki Yoshikawa, Wenji Li
  • Patent number: 7365202
    Abstract: Compounds of structural formula I are modulators of the androgen receptor (AR) in a tissue selective manner.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: April 29, 2008
    Assignee: Merck & Co., Inc.
    Inventors: Lushi Tan, Robert S. Meissner, Wenjie Li, James J. Perkins, Aaron S. Cote, Joyce Stellabott, Yuan-Hon Kiang
  • Patent number: 7301026
    Abstract: The present invention relates to synthetic processes useful in the preparation of fluorinated 4-azasteroid derivatives that modulate androgen receptors and have application in the treatment of conditions caused by androgen deficiency or androgen receptor hyperactivity, such as osteoporosis, periodontal disease, bone fracture, frailty, erectile dysfunction, loss of libido, androgen-dependent cancers and sarcopenia. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: November 27, 2007
    Assignee: Merck & Co., Inc
    Inventors: Lushi Tan, Benjamin T. Dorner, Wenjie Li, Nobuyoshi Yasuda, Frederick W. Hartner