Patents by Inventor Sultan Chowdhury

Sultan Chowdhury 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: 20110237567
    Abstract: This invention is directed to tricyclic spiro-oxindole derivatives of formula (I), wherein j, k, m, n, w, q, Y, Q, X, R1, R2 and R3 are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.
    Type: Application
    Filed: October 12, 2007
    Publication date: September 29, 2011
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Ranjender Kamboj
  • Publication number: 20110172282
    Abstract: This invention is directed to methods of using spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, for the treatment and/or prevention of hypercholesterolemia, benign prostatic hyperplasia, pruritis and cancer.
    Type: Application
    Filed: October 12, 2007
    Publication date: July 14, 2011
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Rajender Kamboj, Duanjie Hou, Shifeng Liu, Mehran Seid Bagherzadeh, Serguei Sviridov, Shaoyi Sun, Jianyu Sun, Nagasree Chakka, Tom Hsieh, Vandna Raina
  • Patent number: 7951805
    Abstract: Methods of treating an SCD-mediated disease or condition in a mammal, preferably a human, are disclosed, wherein the methods comprise administering to a mammal in need thereof a compound of formula (I): Formula (I) where x, y, G, J, L, M, V, W, R2, R3, R4, R5, R5a, R6, R6a, R7, R7a, R8, and R8a are defined herein. Pharmaceutical compositions comprising the compounds of formula (I) are also disclosed.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: May 31, 2011
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Rajender Kamboj, Zaihui Zhang, Jianmin Fu, Serguei Sviridov, Shaoyi Sun, Mehran Seid Bagherzadeh, Vandna Raina, Duanjie Hou, Sultan Chowdhury, Shifeng Liu, Vishnumurthy Kodumuru, Nagasree Chakka
  • Publication number: 20110112162
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 13, 2009
    Publication date: May 12, 2011
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Zenova
  • Publication number: 20110087027
    Abstract: This invention is directed to methods of preparing certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 14, 2010
    Publication date: April 14, 2011
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Jean-Jacques Cadieux, Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Qi Jia, Stefanie Abel, Emad El-Sayed, Elke Huthmann, Thomas Isarno
  • Patent number: 7919484
    Abstract: This invention is directed to the use of SCD-1 inhibitors of the formula (I): where x, y, V, W, G, J, L, M, R2, R3, R5, R5a, R6, R6a, R7, R7a, R8 and R8a are defined herein, in combination with other drug therapies to treat adverse weight gain.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 5, 2011
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Rajender Kamboj, Michael D. Winther, Robert Fraser, Mikhail Chafeev, Sultan Chowdhury, Jian-Min Fu, Duanjie Hou, Shifeng Liu, Vandna Raina, Mehran Seid Bagherzadeh, Serguei Sviridov, Kashinath Sadalapure, Shaoyi Sun, Vishnumurthy Kodumuru, Nagasree Chakka, Zaihui Zhang, Melwyn Abreo, Mikhail A. Kondratenko, Daniel F. Harvey, Cindy J. Hudson, Wenbao Li, Chi Tu, Sengen Sun, Mark W. Holladay, Heinz W. Gschwend
  • Publication number: 20110034500
    Abstract: This invention is directed to spiroheterocyclic compounds of formula (I): wherein k, j, p, Q, R1, R3a, R3b, R3e, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, that are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of using the compounds are also disclosed.
    Type: Application
    Filed: August 12, 2010
    Publication date: February 10, 2011
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Rajender Kamboj, Shifeng Liu, Mehran Seid Bagherzadeh, Jianyu Sun, Serguei Sviridov
  • Patent number: 7829712
    Abstract: Methods of treating an SCD-mediated disease or condition in a mammal, preferably a human, are disclosed, wherein the methods comprise administering to a mammal in need thereof a compound of formula (I) where x, y, G, J, K, L, M, Q, W, V, R2, R3, R5, R5a, R6, R6a, R7, R7a, R8 and R8a are defined herein. Pharmaceutical compositions comprising the compounds of formula (I) are also disclosed.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: November 9, 2010
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Rajender Kamboj, Zaihui Zhang, Jianmin Fu, Serguei Sviridov, Sultan Chowdhury, Vishnumurthy Kodumuru
  • Patent number: 7799798
    Abstract: This invention is directed to spiroheterocyclic compounds of formula (I) wherein k, j, p, Q, R1, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, that are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of using the compounds are also disclosed.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: September 21, 2010
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Rajender Kamboj, Shifeng Liu, Mehran Seid Bagherzadeh, Jianyu Sun, Serguei Sviridov
  • Patent number: 7777036
    Abstract: Methods of treating an SCD-mediated disease or condition in a mammal, preferably a human, are disclosed, wherein the methods comprise administering to a mammal in need thereof a compound of formula (I) where y, G, K, L, M, W, V, R2, R3, R4a, R6, R6a, R7, R7a, R8 and R8a are defined herein. Pharmaceutical compositions comprising the compounds of formula (I) are also disclosed.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: August 17, 2010
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Rajender Kamboj, Zaihui Zhang, Jianmin Fu, Mehran Seid Bagherzadeh, Serguei Sviridov, Sultan Chowdhury, Shifeng Liu, Vishnumurthy Kodumuru
  • Patent number: 7754711
    Abstract: Methods of treating an SCD-mediated disease or condition in a mammal, preferably a human, are disclosed, wherein the methods comprise administering to a mammal in need thereof a compound of formula (Ia): where x, y, W, V, R2, R3, R4, R5, R6, R6a, R7, R7a, R8, R8a, R9 and R9a are defined herein. Pharmaceutical compositions comprising the compounds of formula (I) are also disclosed.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: July 13, 2010
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Nagasree Chakka, Mikhail Chafeev, Sultan Chowdhury, Jian-Min Fu, Duanjie Hou, Rajender Kamboj, Vishnumurthy Kodumuru, Shifeng Liu, Vandna Raina, Shaoyi Sun, Serguei Sviridov, Michael D. Winther, Zaihui Zhang, Melwyn Abreo, Mark W. Holladay, Wenbao Li, Sengen Sun, Chi Tu, Heinz W. Gschwend
  • Publication number: 20100173967
    Abstract: This invention is directed to methods of using spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, for the treatment and/or prevention of hypercholesterolemia, benign prostatic hyperplasia, pruritis and cancer.
    Type: Application
    Filed: October 12, 2007
    Publication date: July 8, 2010
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Rajender Kamboj, Duanjie Hou, Shifeng Liu, Mehran Seid Bagherzadeh, Serguei Sviridov, Shaoyi Sun, Jianyu Sun, Nagasree Chakka, Tom Hsieh, Vandna Raina
  • Publication number: 20100160362
    Abstract: This invention is directed to methods of using spiro-oxindole compounds of formula (I): wherein j, k, m, Q, X, R1, R2a, R2b, R2c, R2d and R3 are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, N-oxide, solvate or prodrug thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 12, 2007
    Publication date: June 24, 2010
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Jean-Jacques Cadieux, Sultan Chowdhury, Jianmin Fu, Rajender Kamboj, Tom Hsieh, Qi Jia, Shifeng Liu, Jianyu Sun
  • Publication number: 20100160291
    Abstract: This invention is directed to tricyclic spiro-oxindole derivatives of formula (I), wherein j, k, m, n, w, q, Y, Q, X, R1, R2 and R3 are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.
    Type: Application
    Filed: October 12, 2007
    Publication date: June 24, 2010
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Ranjender Kamboj
  • Publication number: 20100137299
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 13, 2009
    Publication date: June 3, 2010
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Zenova, Qi Jia, Jean-Jacques Cadieux, Simon J. Gauthier, Amy Frances Douglas, Tom Hsieh, Nagasree Chakka, Zoran Cikojevic
  • Publication number: 20100130487
    Abstract: This invention is directed to spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.
    Type: Application
    Filed: December 30, 2009
    Publication date: May 27, 2010
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Nagasree Chakka, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Duanjie Hou, Tom Hsieh, Rajender Kamboj, Shifeng Liu, Vandna Raina, Mehran Seid Bagherzadeh, Jianyu Sun, Shaoyi Sun, Serguei Sviridov
  • Publication number: 20100125072
    Abstract: This invention is directed to spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.
    Type: Application
    Filed: December 30, 2009
    Publication date: May 20, 2010
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Nagasree Chakka, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Duanjie Hou, Tom Hsieh, Rajender Kamboj, Shifeng Liu, Vandna Raina, Mehran Seid Bagherzadeh, Jianyu Sun, Shaoyi Sun, Serguei Sviridov
  • Publication number: 20100099728
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 22, 2010
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Zenova
  • Patent number: 7700641
    Abstract: This invention is directed to spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: April 20, 2010
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Nagasree Chakka, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Duanjie Hou, Tom Hsieh, Rajender Kamboj, Shifeng Liu, Vandna Raina, Mehran Seid Bagherzadeh, Jianyu Sun, Shaoyi Sun, Serguei Sviridov
  • Publication number: 20090264444
    Abstract: The present invention provides heterocyclic derivatives that modulate the activity of stearoyl-CoA desaturase. Methods of using such derivatives to modulate the activity of stearoyl-CoA desaturase and pharmaceutical compositions comprising such derivatives are also encompassed.
    Type: Application
    Filed: February 20, 2009
    Publication date: October 22, 2009
    Inventors: Sultan Chowdhury, Natalie Dales, Julia Fonarev, Jianmin Fu, Duanjie Hou, Qi Jia, Vishnumurthy Kodumuru, Natalia Pokrovskaia, Shaoyi Sun, Zaihui Zhang