Patents by Inventor Zhi-Hui Lu

Zhi-Hui Lu 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: 20060287376
    Abstract: The present invention provides indole compounds of general formula III comprising the compounds of formula (III); wherein R, and R1-3 a defined herein.
    Type: Application
    Filed: August 29, 2006
    Publication date: December 21, 2006
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Guisheng LI, Jianxiu Liu, Zhi-Hui Lu, Frank Roschangar, Chris Senanayake, Ming Shen
  • Patent number: 7129378
    Abstract: This invention provides a method of preparing amine stereoisomers, which comprises stereoselectively reducing a sulfinylimine that bears on the sulfinyl group a residue of an alcohol, thiol or amine, or reacting a sulfinylimine stereoisomer that bears on the sulfinyl group a residue of an alcohol, thiol or amine with a source of a nucleophile, to afford a sulfinylamine stereoisomer, followed by contacting the sulfinylamine stereoisomer with a reagent suitable for the cleavage of a sulfur-nitrogen bond, to afford an amine stereoisomer. It also provides novel intermediates useful in the method, and the use of certain of the intermediates in the preparation of sulfoxide and sulfinylamine stereoisomers.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: October 31, 2006
    Assignee: Apsinterm, LLC
    Inventors: Zhengxu Han, Dhileepkumar Krishnamurthy, Chris Hugh Senanayake, Zhi-Hui Lu
  • Patent number: 7125845
    Abstract: The present invention relates to compounds of Formula I, or a pharmaceutically acceptable salt, ester, or prodrug, thereof: which inhibit serine protease activity, particularly the activity of hepatitis C virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: October 24, 2006
    Assignee: Enanta Pharmaceuticals, Inc.
    Inventors: Frank X. H. Wu, Suanne Nakajima, Zhi-Hui Lu, Ying Sun, Zhenwei Miao, Yat Sun Or, Zhe Wang
  • Patent number: 7126009
    Abstract: The present invention provides a method for making substituted indole compounds of general formula III comprising the step of: (a) reacting a 2-bromoaniline or 2-chloroaniline of general formula (I) (I) wherein: X, R and R1 are defined herein with a substituted acetylene of formula (II) wherein R2 and R3 are defined herein in the presence of a palladium catalyst, a ligand, and a base in a solvent at a suitable temperature to give a compound of formula (III);
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: October 24, 2006
    Assignee: Boehringer Ingelheim International, GmbH
    Inventors: Guisheng Li, Jianxiu Liu, Zhi-Hui Lu, Frank Roschangar, Chris Hugh Senanayake, Ming Shen
  • Publication number: 20060183752
    Abstract: Disclosed are processes for making 2,3 disubstituted indole compounds such as compounds of general formula I comprised of the steps of a) reacting a bromoindole compound (i) with a dialkoxyl C1-5 borane in the presence of a ligand, a palladium catalyst and a base to make a compound of general formula (ii); or alternatively reacting compound (i) with a trialkyl magnesiate reagent, followed by treatment with a borate; b) reacting the product of step a with a R2-Hal where R2-Hal is defined herein.
    Type: Application
    Filed: February 10, 2006
    Publication date: August 17, 2006
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Ahmad Khodabocus, Zhi-Hui Lu, Chris Senanayake, Hanxun Wei, Yongda Zhang
  • Publication number: 20050234242
    Abstract: The present invention provides a process for making a compound of general formula I: wherein: R=H or C1-8alkyl X=C3-C8cycloalkyl, C3-C8aryl or C3-C8alkyl; Y=heteroaryl or aryl; Z=H, HO2Cā€”, C1-8alkyl O2Cā€”, C1-6alkyl HNC(O)ā€”, and as described herein.
    Type: Application
    Filed: March 7, 2005
    Publication date: October 20, 2005
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Ahmad Khodabocus, Guisheng Li, Zhi-Hui Lu, Frank Roschangar, Chris Senanayake, Ming Shen
  • Publication number: 20050209465
    Abstract: The present invention provides a method for making substituted indole compounds of general formula III comprising the step of: (a) reacting a 2-bromoaniline or 2-chloroaniline of general formula (I) (I) wherein: X, R and R1 are defined herein with a substituted acetylene of formula (II) wherein R2 and R3 in the presence of a palladium catalyst, a ligand, and a base in a solvent at a suitable temperature to give a compound of formula (III);
    Type: Application
    Filed: March 14, 2005
    Publication date: September 22, 2005
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Guisheng Li, Jianxiu Liu, Zhi-Hui Lu, Frank Roschangar, Chris Senanayake, Ming Shen
  • Publication number: 20050165240
    Abstract: This invention provides a method of preparing amine stereoisomers, which comprises stereoselectively reducing a sulfinylimine that bears on the sulfinyl group a residue of an alcohol, thiol or amine, or reacting a sulfinylimine stereoisomer that bears on the sulfinyl group a residue of an alcohol, thiol or amine with a source of a nucleophile, to afford a sulfinylamine stereoisomer, followed by contacting the sulfinylamine stereoisomer with a reagent suitable for the cleavage of a sulfur-nitrogen bond, to afford an amine stereoisomer. It also provides novel intermediates useful in the method, and the use of certain of the intermediates in the preparation of sulfoxide and sulfinylamine stereoisomers.
    Type: Application
    Filed: April 7, 2003
    Publication date: July 28, 2005
    Inventors: Zhengxu Han, Dhileepkumar Krishnamurthy, Chris Senanayake, Zhi-Hui Lu
  • Publication number: 20050065073
    Abstract: The present invention relates to compounds of Formula I, or a pharmaceutically acceptable salt, ester, or prodrug, thereof: which inhibit serine protease activity, particularly the activity of hepatitis C virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
    Type: Application
    Filed: July 3, 2003
    Publication date: March 24, 2005
    Inventors: Frank Wu, Suanne Nakajima, Zhi-Hui Lu, Ying Sun, Zhenwei Miao, Yat Or, Zhe Wang