Patents by Inventor Liangqin Guo

Liangqin Guo 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: 20100234409
    Abstract: Compounds of the formulae (I) and (II): (wherein Q, X, E, G1, G2, R2, R3, R4, R5, R6 and Z are as defined herein) which are modulators of chemokine receptor activity and are useful in the prevention or treatment of certain inflammatory and immunoregulatory disorders and diseases, allergic diseases, atopic conditions including allergic rhinitis, dermatitis, conjunctivitis, and asthma, as well as autoimmune pathologies such as rheumatoid arthritis and atherosclerosis. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which chemokine receptors are involved.
    Type: Application
    Filed: May 20, 2005
    Publication date: September 16, 2010
    Inventors: Lihu Yang, Songnian Lin, Gregori Morriello, Liangqin Guo, Changyou Zhou
  • Publication number: 20100184758
    Abstract: Beta-carboline derivatives of structural formula I are selective antagonists of the somatostatin subtype receptor 3 (SSTR3) and are useful for the treatment of Type 2 diabetes mellitus and of conditions that are often associated with this disease, including hyperglycemia, insulin resistance, obesity, lipid disorders, and hypertension. The compounds are also useful for the treatment of depression and anxiety.
    Type: Application
    Filed: July 15, 2008
    Publication date: July 22, 2010
    Inventors: Peter H. Dobbelaar, Wu Du, Liangqin Guo, William K. Hagmann, Shuwen He, Tianying Jian, Jian Liu, Ravi P. Nargund, Alexander Pasternak, Shrenik K. Shah, Quang T. Truong, Zhixiong Ye, James Deliureficio, Raman Bakshi
  • Patent number: 7652024
    Abstract: Certain novel N-acylated spiropiperidine derivatives are ligands of the human melanocortin receptor(s) and, in particular, are selective ligands of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the modulation of MC-4R, such as obesity, diabetes, nicotine addiction, alcoholism, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: January 26, 2010
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Raman K. Bakshi, James P. Dellureficio, Peter H. Dobbelaar, Liangqin Guo, Shuwen He, Qingmei Hong, Ravi P. Nargund, Zhixiong Ye
  • Publication number: 20090325990
    Abstract: Certain novel N-acylated spiropiperidine derivatives are ligands of the human melanocortin receptor(s) and, in particular, are selective ligands of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the modulation of MC-4R, such as obesity, diabetes, nicotine addiction, alcoholism, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Application
    Filed: October 13, 2006
    Publication date: December 31, 2009
    Inventors: Raman K. Bakshi, James P. Dellureficio, Peter H. Dobbelaar, Liangqin Guo, Shuwen He, Qingmei Hong, Ravi P. Nargund, Zhixiong Ye
  • Publication number: 20080051430
    Abstract: Certain novel N-acylated piperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Application
    Filed: July 13, 2005
    Publication date: February 28, 2008
    Inventors: Khaled Barakat, Liangqin Guo, Jian Liu, Ravi Nargund, Iyassu Sebhat, Zhixiong Ye
  • Patent number: 7329673
    Abstract: Certain novel N-acylated spiropiperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: February 12, 2008
    Assignee: Merck & Co., Inc.
    Inventors: Liangqin Guo, Shuwen He, Tianying Jian, Yingjie Lai, Jian Liu, Ravi P. Nargund, Iyassu K. Sebhat, Feroze Ujjainwalla, Zhixiong Ye, Jonathan R. Young
  • Patent number: 7276520
    Abstract: Certain novel bicyclic N-acylated piperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: October 2, 2007
    Assignee: Merck & Co., Inc.
    Inventors: Ravi P. Nargund, Zhixiong Ye, Liangqin Guo
  • Patent number: 7160886
    Abstract: Certain novel N-acylated piperazine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 9, 2007
    Assignee: Merck & Co., Inc.
    Inventors: Raman K. Bakshi, Liangqin Guo, Qingmei Hong, Ravi P. Nargund, Patrick G. Pollard, Iyassu K. Sebhat, Feroze Ujjainwalla, Zhixiong Ye
  • Patent number: 7115628
    Abstract: Certain novel bridged piperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: October 3, 2006
    Assignee: Merck & Co., Inc.
    Inventors: Zhixiong Ye, Khaled J. Barakat, Liangqin Guo, Ravi P. Nargund, Iyassu K. Sebhat
  • Publication number: 20060194780
    Abstract: Certain novel bicyclic N-acylated piperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Application
    Filed: March 22, 2004
    Publication date: August 31, 2006
    Inventors: Ravi Nargund, Zhixiong Ye, Liangqin Guo
  • Publication number: 20060183904
    Abstract: Certain novel N-acylated spiropiperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Application
    Filed: March 31, 2004
    Publication date: August 17, 2006
    Inventors: Liangqin Guo, Shuwen He, Tianying Jian, Jian Liu, Yingjie Lai, Ravi Nargund, Iyassu Sebhat, Feroze Ujjainwalla, Zhixiong Ye, Jonathan Young
  • Publication number: 20040204398
    Abstract: Certain novel N-acylated piperazine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Application
    Filed: February 27, 2004
    Publication date: October 14, 2004
    Inventors: Raman K. Bakshi, Liangqin Guo, Qingmei Hong, Ravi P. Nargund, Patrick G. Pollard, Iyassu K. Sebhat, Feroze Ujjainwalla, Zhixiong Ye
  • Publication number: 20040180923
    Abstract: Certain novel bridged piperidine derivatives are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of (MC-4R), such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Application
    Filed: January 14, 2004
    Publication date: September 16, 2004
    Inventors: Zhixiong Ye, Khaled J. Barakat, Liangqin Guo, Ravi P. Nargund, Iyassu K. Sebhat
  • Patent number: 6458790
    Abstract: Certain novel substituted piperidine compounds are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment and control of obesity, diabetes, and sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: October 1, 2002
    Assignee: Merck & Co., Inc.
    Inventors: Brenda L. Palucki, Khaled J. Barakat, Liangqin Guo, Yingjie Lai, Ravi P. Nargund, Min K. Park, Patrick G. Pollard, Iyassu K. Sebhat, Zhixiong Ye
  • Patent number: 6387932
    Abstract: This invention relates to non-peptide somatostatin agonist compounds which are potent with high selectivity toward the receptor subtype 2. The compounds provide an improved therapeutic index in the treatment of diabetes, cancer, acromegaly and retenosis. Many of the compounds are orally active.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 14, 2002
    Assignee: Merck & Co., Inc.
    Inventors: Changyou Zhou, Alexander Pasternak, Gregori Morriello, Liangqin Guo, Yanping Pan, Lihu Yang, Arthur Patchett
  • Publication number: 20020019523
    Abstract: Certain novel substituted piperidine compounds are agonists of the human melanocortin receptor(s) and, in particular, are selective agonists of the human melanocortin-4 receptor (MC-4R). They are therefore useful for the treatment, control, or prevention of diseases and disorders responsive to the activation of MC-4R, such as obesity, diabetes, sexual dysfunction, including erectile dysfunction and female sexual dysfunction.
    Type: Application
    Filed: March 20, 2001
    Publication date: February 14, 2002
    Inventors: Brenda L. Palucki, Khaled J. Barakat, Liangqin Guo, Yingjie Lai, Ravi P. Nargund, Min K. Park, Patrick G. Pollard, Iyassu K. Sebhat, Zhixiong Ye
  • Patent number: 6063796
    Abstract: This invention relates to somatostatin agonist compounds which are potent with high selectivity toward the receptor subtype 2. Compounds of the formula: ##STR1## including pharmaceutically acceptable salts and hydrates thereof are disclosed. These compounds are useful in the treatment of diabetes, cancer, acromegaly, restenosis, depression, irritable bowel syndrome, pain and diabetic retinopathy. Many of the compounds are also orally active.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: May 16, 2000
    Assignee: Merck & Co., Inc.
    Inventors: Lihu Yang, Arthur A. Patchett, Alexander Pasternak, Scott Berk, Meng Hsin Chen, David Johnston, Kevin Chapman, Ravi Nargund, James R. Tata, Liangqin Guo
  • Patent number: 6025372
    Abstract: Somatostatin agonist compounds of formula I are disclosed: ##STR1## including pharmaceutically acceptable salts and hydrates thereof These compounds are useful in the treatment of diabetes, cancer, acromegaly, restenosis, depression, irritable bowel syndrome and pain. The compounds are potent with high selectivity toward the receptor subtype 2.Pharmaceutical compositions and methods of treatment are also included.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: February 15, 2000
    Assignee: Merck & Co., Inc.
    Inventors: Lihu Yang, Arthur A. Patchett, Alexander Pasternak, Kevin Chapman, James R. Tata, Liangqin Guo