Patents by Inventor Chris Senanayake

Chris Senanayake 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: 9096626
    Abstract: Phosphine ligands of the formula Ia, IB and mixtures thereof.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: August 4, 2015
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Nizar Haddad, Bo Qu, Sonia Rodriguez, Chris Senanayake, Wenjun Tang, Xudong Wei, Nathan K. Yee
  • Publication number: 20130137902
    Abstract: Phosphine ligands of the formula Ia, IB and mixtures thereof.
    Type: Application
    Filed: March 31, 2011
    Publication date: May 30, 2013
    Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Nizar Haddad, Bo Qu, Sonia Rodriguez, Chris Senanayake, Wenjun Tang, Xudong Wei, Nathan K. Yee
  • Publication number: 20090326194
    Abstract: Disclosed is a process for preparing a macrocyclic compound of the formula (I) wherein a hydroxyl-substituted macrocyclic compound of formula (3) is reacted with a sulfonyl-substituted compound of formula QUIN: The compounds of formula (I) are potent active agents for the treatment of hepatitis C virus (HCV) infection.
    Type: Application
    Filed: September 2, 2009
    Publication date: December 31, 2009
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Carl Alan BUSACCA, Fabrice GALLOU, Nizar HADDAD, Azad HOSSAIN, Suresh R. KAPADIA, Jianxiu LIU, Chris SENANAYAKE, Xudong WEI, Nathan K. YEE
  • Patent number: 7608614
    Abstract: Intermediates of the formula QUIN: and methods for their preparation are described. The intermediate compounds are useful for preparing active agents for the treatment of hepatitis C virus (HCV) infection.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: October 27, 2009
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Carl Alan Busacca, Fabrice Gallou, Nizar Haddad, Azad Hossain, Suresh R. Kapadia, Jianxiu Liu, Chris Senanayake, Xudong Wei, Nathan K. Yee
  • Patent number: 7550622
    Abstract: The invention relates to the field of pharmaceutics and more specifically to cycloalkylamidoacid compositions useful in the preparation of cycloalkyaminoacids and oxazolidinediones, and processes for making cycloamidoacids X and R are defined herein.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: June 23, 2009
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Isabelle Gallou, Nizar Haddad, Chris Senanayake, Xudong Wei, Jinghua Xu
  • Publication number: 20070293682
    Abstract: This invention encompasses novel methods of preparing sulfinamides and sulfoxides, particularly stereomerically pure sulfinamides and sulfoxides. The invention further encompasses novel compounds from which sulfinamides and sulfoxides can be prepared.
    Type: Application
    Filed: July 30, 2007
    Publication date: December 20, 2007
    Inventors: Chris Senanayake, Zhengxu Han, Dhileepkumar Krishnamurthy, Derek Pflum, Harold Wilkinson
  • 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
  • Publication number: 20060264507
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Application
    Filed: August 4, 2006
    Publication date: November 23, 2006
    Applicant: SEPRACOR INC.
    Inventors: Gerald Tanoury, Chris Senanayake, Donald Kessler
  • Publication number: 20060205638
    Abstract: Disclosed is a process for preparing a macrocyclic compound of the formula (I) wherein a hydroxyl-substituted macrocyclic compound of formula (3) is reacted with a sulfonyl-substituted compound of formula QUIN: The compounds of formula (I) are potent active agents for the treatment of hepatitis C virus (HCV) infection.
    Type: Application
    Filed: March 6, 2006
    Publication date: September 14, 2006
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Carl Busacca, Fabrice Gallou, Nizar Haddad, Azad Hossain, Suresh Kapadia, Jianxiu Liu, Chris Senanayake, Xudong Wei, Nathan Yee
  • 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: 20060128767
    Abstract: This invention encompasses novel methods of preparing sulfinamides and sulfoxides, particularly stereomerically pure sulfinamides and sulfoxides. The invention further encompasses novel compounds from which sulfinamides and sulfoxides can be prepared.
    Type: Application
    Filed: January 27, 2006
    Publication date: June 15, 2006
    Inventors: Chris Senanayake, Zhengxu Han, Dhileepkumar Krishnamurthy, Derek Pflum, Harold Wilkinson
  • Publication number: 20060025447
    Abstract: Disclosed is a multi-step process for preparing a compound of Formula I: wherein R1 to R3 are as defined herein. The compounds of formula I inhibit the binding of human intercellular adhesion molecules to the Leukointegrins. As a result, these compounds are useful in the treatment of inflammatory and immune cell-mediated diseases.
    Type: Application
    Filed: July 25, 2005
    Publication date: February 2, 2006
    Applicants: Boehringer Ingelheim Pharmaceuticals, Inc., Boehringer Ingelheim International GmbH
    Inventors: Xiao-Jun Wang, Thomas Wirth, Thomas Nicola, Li Zhang, Rogelio Frutos, Yibo Xu, Dhileopkumar Krishnamurihy, Laurence Nummy, Richard Varsolona, Chris Senanayake, Jutta Kroeber
  • Publication number: 20050267151
    Abstract: Disclosed are highly convergent processes for preparing compounds of formula (I), which compounds are potent active agents for the treatment of hepatitis C virus (HCV) infection: The disclosed processes use SNAr-type coupling reactions between peptidic compounds having a hydroxyproline moiety of the following formula: and halogenated or sulfonated bromoquinoline compounds.
    Type: Application
    Filed: May 23, 2005
    Publication date: December 1, 2005
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Carl Busacca, Rogelio Frutos, Nizar Haddad, Suresh Kapadia, Jon Lorenz, Anjan Saha, Chris Senanayake, Xudong Wei
  • 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: 20050209488
    Abstract: A process for stereoselective synthesis of a compound of Formula (I) wherein R1, R2, R3, R4, and R5 are as described herein.
    Type: Application
    Filed: March 2, 2005
    Publication date: September 22, 2005
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Jinhua Song, Zhulin Tan, Nathan Yee, Chris Senanayake, Jinghua Xu, Fabrice Gallou
  • 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: 20050148667
    Abstract: A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.
    Type: Application
    Filed: February 7, 2005
    Publication date: July 7, 2005
    Applicant: SEPRACOR INC.
    Inventors: Gerald Tanoury, Chris Senanayake, Donald Kessler
  • Publication number: 20050131241
    Abstract: A process for stereoselective synthesis of compounds of Formula X wherein: R1 is an aryl or heteroaryl group, each optionally independently substituted with one to three substituent groups, wherein each substituent group of R1 is independently C1-C5 alkyl, C2-C5 alkenyl, C2-C5 alkynyl, C3-C8 cycloalkyl, heterocyclyl, aryl, heteroaryl, C1-C5 alkoxy, C2-C5 alkenyloxy, C2-C5 alkynyloxy, aryloxy, C1-C5 alkanoyloxy, C1-C5 alkanoyl, aroyl, trifluoromethyl, trifluoromethoxy, or C1-C5 alkylthio, wherein each substituent group of R1 is optionally independently substituted with one to three substituent groups selected from methyl, methoxy, fluoro, chloro, hydroxy, oxo, cyano, or amino; and R2 and R3 are each independently hydrogen or C1-C5 alkyl, or R2 and R3 together with the carbon atom they are commonly attached to form a C3-C8 spiro cycloalkyl ring.
    Type: Application
    Filed: September 30, 2004
    Publication date: June 16, 2005
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Jinhua Song, Zhulin Tan, Jinghua Xu, Nathan Yee, Chris Senanayake
  • Publication number: 20050113572
    Abstract: Disclosed are processes of making dipeptide compounds of formula(I) as further described in the detailed description section:
    Type: Application
    Filed: October 27, 2004
    Publication date: May 26, 2005
    Applicant: Boehringer Ingelheim Pharmaceuticals, Inc.
    Inventors: Carl Busacca, Nizar Haddad, Suresh Kapadia, Lana Smith Keenan, Jon Lorenz, Chris Senanayake, Xudong Wei