Patents by Inventor Jinchu Liu

Jinchu Liu 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: 8618112
    Abstract: Novel crystalline salts of 3-[4-(3-ethanesulfonyl-propyl)-bicyclo[2.2.2]oct-1-yl]-4-methyl-5-(2-trifluoromethyl-phenyl)-4H-1,2,4-triazole are potent inhibitors of 11?-hydroxysteroid dehydrogenase Type 1 and are useful for the treatment of conditions associated with Metabolic Syndrome as well as cognitive impairment. The invention also relates to pharmaceutical compositions containing these novel salts, processes to prepare these salts and their pharmaceutical compositions as well as uses thereof for the treatment of Type 2 diabetes, hyperglycemia, obesity, dyslipidemia, hypertension, and cognitive impairment.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: December 31, 2013
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Joseph E. Lynch, Yuri Y. Bereznitski, Frederick T. Mattrey, John L. Leazer, Jr., Russell R. Ferlita, Jinchu Liu, Jungjun Yin, Robert M. Wenslow, Jr.
  • Publication number: 20110237634
    Abstract: Novel crystalline salts of 3-[4-(3-ethanesulfonyl-propyl)-bicyclo[2.2.2]oct-1-yl]-4-methyl-5-(2-trifluoromethyl-phenyl)-4H-1,2,4-triazole are potent inhibitors of 11?-hydroxysteroid dehydrogenase Type 1 and are useful for the treatment of conditions associated with Metabolic Syndrome as well as cognitive impairment. The invention also relates to pharmaceutical compositions containing these novel salts, processes to prepare these salts and their pharmaceutical compositions as well as uses thereof for the treatment of Type 2 diabetes, hyperglycemia, obesity, dyslipidemia, hypertension, and cognitive impairment.
    Type: Application
    Filed: December 7, 2009
    Publication date: September 29, 2011
    Applicant: MERCK SHARP & DOHME CORP.
    Inventors: Joseph E. Lynch, Yuri Y. Bereznitski, Frederick T. Mattrey, John L. Leazer, JR., Russell R. Ferlita, Jinchu Liu, Jungjun Yin, Robert M. Wenslow, JR.
  • Patent number: 6649761
    Abstract: A process for preparing &ggr;-hydroxy-4-[[2-oxazolyl]alkyl]-&agr;-[(cyclo)alkyl- or aryl- or heteroaryl-substituted methyl]-2-[[(un)substituted alkyl]aminocarbonyl]-1-piperazinepentanamides is disclosed. The piperazinepentanamides are useful as HIV protease inhibitors. A process for making a 4-[[2-oxazolyl]alkyl]-2-[[(un)substituted alkyl]aminocarbonyl]piperazine by treating a ketoamide precursor with fuming sulfuric acid in the presence of polyphosphoric acid is also disclosed. In addition, a process for enhancing the optical purity of 4-[[2-oxazolyl]alkyl]-2-[[(un)substituted alkyl]aminocarbonyl]-piperazines via the formation 2-naphthalenesulfonic acid crystal salts thereof is disclosed, as well as a method for purifying 2-naphthalenesulfonic acid.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: November 18, 2003
    Assignee: Merck & Co., Inc.
    Inventors: Norihiro Ikemoto, Jinchu Liu
  • Publication number: 20030144512
    Abstract: A process for preparing &ggr;-hydroxy-4-[[2-oxazolyl]alkyl]-&agr;-[(cyclo)alkyl- or aryl- or heteroaryl-substituted methyl]-2-[[(un)substituted alkyl]aminocarbonyl]-1-piperazinepentanamides is disclosed. The piperazinepentanamides are useful as HIV protease inhibitors. A process for making a 4-[[2-oxazolyl]alkyl]-2-[[(un)substituted alkyl]aminocarbonyl]piperazine by treating a ketoamide precursor with fuming sulfuric acid in the presence of polyphosphoric acid is also disclosed. In addition, a process for enhancing the optical purity of 4-[[2-oxazolyl]alkyl]-2-[[(un)substituted alkyl]aminocarbonyl]-piperazines via the formation 2-naphthalenesulfonic acid crystal salts thereof is disclosed, as well as a method for purifying 2-naphthalenesulfonic acid.
    Type: Application
    Filed: May 30, 2002
    Publication date: July 31, 2003
    Inventors: Norihiro Ikemoto, Jinchu Liu
  • Patent number: 6037166
    Abstract: The invention relates to a process for preparing a substituted (6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-yl)piperidine compound of the formula (+)-I ##STR1## wherein: R, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently selected from the group consisting of hydrogen, halo, C.sub.1 -C.sub.6 alkyl, amino, --OCH.sub.3, --OCF.sub.3 and CF.sub.3, and the dotted line represents an optional double bond; comprising:enzymatically catalyzing the acylation of a compound of the formula (.+-.)-II ##STR2## wherein the variables are as defined above, and hydrolysing the product to obtain (+)-I.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: March 14, 2000
    Assignee: Schering Corporation
    Inventors: William Brian Morgan, Jinchu Liu