Patents by Inventor Ramakrishnan Chidambaram

Ramakrishnan Chidambaram 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: 7491725
    Abstract: The invention relates to processes for preparing compounds having the formula, and crystalline forms thereof, wherein Ar is aryl or heteroaryl, L is an optional alkylene linker, and R2, R3, R4, and R5, are as defined in the specification herein, which compounds are useful as kinase inhibitors, in particular, inhibitors of protein tyrosine kinase and p38 kinase.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 17, 2009
    Assignee: Bristol-Myers Squibb Company
    Inventors: Jean Lajeunesse, John D. DiMarco, Michael Galella, Ramakrishnan Chidambaram
  • Publication number: 20080275009
    Abstract: Disclosed are a method of treating cancer and/or other proliferative diseases comprising orally administering N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3-thiazole-5-carboxamide or a salt thereof, and pharmaceutical compositions comprising N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3-thiazole-5-carboxamide or a salt thereof. Also disclosed are N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3-thiazole-5-carboxamide salts, as well as crystalline forms thereof.
    Type: Application
    Filed: July 7, 2008
    Publication date: November 6, 2008
    Applicant: Bristol-Myers Squibb Company
    Inventors: Ramakrishnan Chidambaram, George M. Derbin, Masaki Endo, Julia ZH Gao, Tu Lee, Rajeshwar Motheram, William Lawrence Parker, Victor W. Rosso, Sailesh A. Varia
  • Publication number: 20070105867
    Abstract: Disclosed are a method of treating cancer and/or other proliferative diseases comprising orally administering N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3 -thiazole-5-carboxamide or a salt thereof, and pharmaceutical compositions comprising N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4 -pyrimidinyl)amino)-1,3-thiazole-5-carboxamide or a salt thereof. Also disclosed are N-(2-chloro-6-methylphenyl)-2-((6-(4-(2-hydroxyethyl)-1-piperazinyl)-2-methyl-4-pyrimidinyl)amino)-1,3-thiazole-5-carboxamide salts, as well as crystalline forms thereof.
    Type: Application
    Filed: September 21, 2006
    Publication date: May 10, 2007
    Inventors: Ramakrishnan Chidambaram, George Derbin, Masaki Endo, Julia Gao, Tu Lee, Rajeshwar Motheram, William Parker, Victor Rosso, Sailesh Varia
  • Publication number: 20060293304
    Abstract: A process is provided for preparing triazole substituted azaindoleoxoacetic piperazine derivative. Novel intermediates produced in the above process, and novel N-1 and amorphous forms of a 1,2,3-triazole substituted azaindoloxoacetic piperazine derivatives and processes for producing such novel forms are also provided.
    Type: Application
    Filed: June 19, 2006
    Publication date: December 28, 2006
    Inventors: Nachimuthu Soundararajan, Yuping Qiu, Wenhao Hu, David Kronenthal, Pierre Sirard, Jean Lajeunesse, Robert Droghini, Ramakrishnan Chidambaram, Xinhua Qian, Kenneth Natalie, Shawn Pack, Nathan Reising, Erqing Tang, Michael Fakes, Qi Gao, Feng Qian, Blisse Vakkalagadda, Chiajen Lai, Shan-Ming Kuang
  • Publication number: 20060116420
    Abstract: The present invention relates to crystalline forms of 3?-tert-Butyl-3?-N-tert-butyloxycarbonyl-4-deacetyl-3 ?-dephenyl-3?-N-debenzoyl-4-O-methoxycarbonyl-paclitaxel represented by formula I; processes for the production thereof; pharmaceutical compositions thereof; methods for preparing the pharmaceutical composition; and methods for inhibiting tumor growth therewith.
    Type: Application
    Filed: November 22, 2005
    Publication date: June 1, 2006
    Inventors: Ramakrishnan Chidambaram, Robert Perrone, Martha Davidovich, John DiMarco, Gary McGeorge, Imre Vitez
  • Publication number: 20060004067
    Abstract: The invention relates to processes for preparing compounds having the formula, and crystalline forms thereof, wherein Ar is aryl or heteroaryl, L is an optional alkylene linker, and R2, R3, R4, and R5, are as defined in the specification herein, which compounds are useful as kinase inhibitors, in particular, inhibitors of protein tyrosine kinase and p38 kinase.
    Type: Application
    Filed: July 29, 2005
    Publication date: January 5, 2006
    Inventors: Bang-Chi Chen, Roberto Droghini, Jean Lajeunesse, John DiMarco, Michael Galella, Ramakrishnan Chidambaram
  • Publication number: 20050215795
    Abstract: The invention relates to processes for preparing compounds having the formula, and crystalline forms thereof, wherein Ar is aryl or heteroaryl, L is an optional alkylene linker, and R2, R3, R4, and R5, are as defined in the specification herein, which compounds are useful as kinase inhibitors, in particular, inhibitors of protein tyrosine kinase and p38 kinase.
    Type: Application
    Filed: February 4, 2005
    Publication date: September 29, 2005
    Inventors: Bang-Chi Chen, Roberto Droghini, Jean Lajeunesse, John Dimarco, Michael Galella, Ramakrishnan Chidambaram
  • Publication number: 20050054873
    Abstract: Provided are processes for the synthesis of aniline derivatives, specifically certain aniline derivatives which have activity as thyroid receptor ligands.
    Type: Application
    Filed: September 8, 2004
    Publication date: March 10, 2005
    Inventors: Ramakrishnan Chidambaram, Joydeep Kant, Raymond Weaver, Jurong Yu, Arun Ghosh
  • Patent number: 6806381
    Abstract: Provided are processes for the synthesis of aniline derivatives, specifically certain aniline derivatives which have activity as thyroid receptor ligands.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: October 19, 2004
    Assignee: Bristol-Myers Squibb Company
    Inventors: Ramakrishnan Chidambaram, Joydeep Kant, Raymond E. Weaver, Jurong Yu, Arun Ghosh
  • Publication number: 20030157671
    Abstract: Provided are processes for the synthesis of aniline derivatives, specifically certain aniline derivatives which have activity as thyroid receptor ligands.
    Type: Application
    Filed: October 17, 2002
    Publication date: August 21, 2003
    Inventors: Ramakrishnan Chidambaram, Joydeep Kant, Raymond E. Weaver, Jurong Yu, Arun Ghosh
  • Patent number: 5498802
    Abstract: A process for preparing 6-chloro-2-hexanone which comprises the steps of (a) dehydrating cyclohexanol in the presence of a suitable catalyst and at a suitable temperature and for a sufficient period of time to form cyclohexene; (b) rearranging said cyclohexene at a higher temperature than in step (a) in the presence of a suitable catalyst and for a sufficient period of time to form 1-methylcyclopentene; (c) hydrating said 1-methylcyclopentene at a temperature lower than step (b) and in the presence of a resin catalyst for a sufficient period of time to form 1-methylcyclopentanol; (d) reacting said 1-methylcylcopentanol with a suitable amount of an alkali metal hypochlorite in the presence of a carboxylic acid to form 1-methylcyclopentyl hypochlorite; and (e) heating said 1-methylcyclopentyl hypochlorite for a sufficient period of time to form 6-chloro-2-hexanone.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: March 12, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Diane E. Allen, Ramakrishnan Chidambaram
  • Patent number: 5491265
    Abstract: A process for preparing 6-chloro-2-hexanone which comprises the steps of (a) oxidizing methylcyclopentane with ozone in the presence of a carboxylic acid and for a sufficient period of time to form 1-methylcyclopentanol; (b) reacting said 1-methylcyclopentanol with a suitable amount of an alkali metal hypochlorite in the presence of a carboxylic acid to form 1-methylcyclopentyl hypochlorite; and (c) heating said 1-methylcyclopentyl hypochlorite for a sufficient period of time to form 6-chloro-2-hexanone.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: February 13, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Diane E. Allen, Charles E. Tucker, Charles C. Hobbs, Ramakrishnan Chidambaram