Patents by Inventor Zaihui Zhang

Zaihui Zhang 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: 7335658
    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, 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: July 29, 2004
    Date of Patent: February 26, 2008
    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: 20080015230
    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, R4, R6, R6a, R7, R7a, R8 and R8a are defined herein. Pharmaceutical compositions comprising the compounds of formula (I) are also disclosed.
    Type: Application
    Filed: September 20, 2005
    Publication date: January 17, 2008
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Rajender Kamboj, Zaihui Zhang, Jian-Min Fu, Mehran Seid Bagherzadeh, Serguei Sviridov, Sultan Chowdhury, Shifeng Liu, Vishnumurthy Kodumuru
  • Publication number: 20070299081
    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: Application
    Filed: September 20, 2005
    Publication date: December 27, 2007
    Applicant: 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
  • Patent number: 7288556
    Abstract: This invention is directed to methods of using compounds having the structure: and including stereoisomers, solvates, and pharmaceutically acceptable salts thereof, wherein each of R1, R2, R3 and R4 is independently selected from hydrogen, R5, R6, and R7; R5 is selected from alkyl, heteroalkyl, aryl and heteroaryl; R6 is selected from (R5)n-alkylene, (R5)n-heteroalkylene, (R5)n-arylene and (R5)n-heteroarylene; R7 is selected from (R6)n-alkylene, (R6)n-heteroalkylene, (R6)n-arylene, and (R6)n-heteroarylene; and n is selected from 0, 1, 2, 3, 4 and 5, where R1 and R2 may together form a heterocyclic structure including the nitrogen to which they are both attached, and R3 and R4 may together form a heterocyclic structure including the nitrogen to which they are both attached; and each of L1 and L2 is independently selected from -A1-A2-A3- where each of A1, A2, and A3 is independently selected from a direct bond, alkylene, heteroalkylene, arylene and heteroarylene.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: October 30, 2007
    Assignee: QLT Inc.
    Inventors: Zaihui Zhang, Gregory B Chopiuk, Timothy S Daynard, Shisen Wang
  • Patent number: 7196083
    Abstract: A method of inhibiting tumor growth is provided, comprising administering an effective dose of a compound of the formula wherein, independently at each occurrence, w is C or N, v and x are N with H substitution as needed to fulfill open valence sites; y and z are selected from N and C, with H substitution as needed to fulfill open valence sites, with the proviso that each of w, v, x, y and z is not simultaneously C; the ring formed from v, w, x, y and z may be saturated or unsaturated; and R1, R2, R3 and R4 are selected from hydrogen, alkyl, aryl, alkaryl, aralkyl, heteroalkyl, and heteroaryl; wherein any adjacent two of R1, R2, R3 and R4 may join together to form a 5, 6 or 7-membered carbocyclic ring or a 5, 6 or 7-membered heterocyclic ring containing at least one atom selected from nitrogen, oxygen and sulfur.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: March 27, 2007
    Assignee: OLT Inc.
    Inventors: Zaihui Zhang, Xinyao Du, Serguei Sviridov, Greg Chopiuk
  • Publication number: 20070060551
    Abstract: Methods of using substituted 3,5-dithio-, disulfinyl-or disulfonyl-isothiazole derivatives to treat cancer or inflammation in a mammal and pharmaceutical compositions containing such derivatives are disclosed.
    Type: Application
    Filed: June 11, 2003
    Publication date: March 15, 2007
    Applicant: QLT, Inc.
    Inventors: Zaihui Zhang, Timothy Daynard, Gabriel Kalmar
  • Publication number: 20060281798
    Abstract: Methods of using thiazolidinedithione derivatives to treat cancer, neurodegenerative disease, diabetes, renal disease or inflammation in a mammal and pharmaceutical compositions containing such derivatives are disclosed.
    Type: Application
    Filed: May 16, 2003
    Publication date: December 14, 2006
    Applicant: QLT Inc.
    Inventors: Zaihui Zhang, Timothy Daynard, Gabriel Kalmar, Jun Yan, David Charest
  • Publication number: 20060247210
    Abstract: Pharmaceutical pyrazolybenzothiazole compositions of formula (1) are provided. The compositions may be pharmaceutically acceptable salts. R1, R2 and R3 at each occurrence are independently selected from amino, aminosulfinyl, aminosulfonyl, aryl, azido, halogen, heteroalkyl, heteroaryl, hydrazinyl, hydrocarbyl, hydrogen, hydroxyl, nitro, nitroso, phosphate, phosphinate, phosphonate, phosphonium, phosphorothioate, phosphoryl, sulfamoyl, sulfate, sulfinic acid, sulfonamido, sulfonate, sulfonic acid, sulfonyl, sulfoxido, thiol, thioureido, and ureido, and R4 is selected from hydrogen, heteroalkyl, heteroaryl, and hydrocarbyl.
    Type: Application
    Filed: July 23, 2003
    Publication date: November 2, 2006
    Applicant: QLT INC.
    Inventors: Zaihui Zhang, Timothy Daynard, Shisen Wang, Xinyao Du, Gregory Chopiuk, Jun Yan, Jianxin Chen, Serguei Sviridov
  • Publication number: 20060235061
    Abstract: Methods of using benzothiophenone derivatives to treat cancer or inflammation in a mammal and pharmaceutical compositions containing such derivatives are disclosed.
    Type: Application
    Filed: June 18, 2003
    Publication date: October 19, 2006
    Applicant: QLT,Inc.
    Inventors: Zaihui Zhang, Timothy Daynard, Gabriel Kalmar
  • Patent number: 7105503
    Abstract: Pharmaceutical compositions and compounds are provided. The compounds of the invention demonstrate anti-proliferative activity, and may promote apoptosis in cells lacking normal regulation of cell cycle and death. In one embodiment of the invention, pharmaceutical compositions of the compounds in combination with a physiologically acceptable carrier are provided. The pharmaceutical compositions are useful in the treatment of hyperproliferative disorders, which disorders include tumor growth, lymphoproliferative diseases, angiogenesis. The compounds of the invention are substituted pyrazoles and pyrazolines.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: September 12, 2006
    Assignee: QLT Inc.
    Inventors: Zaihui Zhang, Timothy S. Daynard, Serguei V. Sviridov, Mikhail A. Chafeev, Shisen Wang
  • Publication number: 20060199802
    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 (1): wherein: W is —O—, —N(R1)—, C(O), S(O)t ; (where t is 0, 1 or 2), N(R1)S(O)2, S(O)2N(R1) , C(O)N(R1) or N(R1)C(O)N(R1); and V is C(O), C(S), C(O)N(R1)—, C(O)O—, S(O)2—, S(O)2N(R1)— or C(R1)H; and x, y, R1, R2, R3, R4, R5, R6, R7, R7a, R8, R8a, R9, R9a, R10 and R10a are defined herein. Pharmaceutical compositions comprising the compounds of formula (I) are also disclosed.
    Type: Application
    Filed: July 29, 2004
    Publication date: September 7, 2006
    Inventors: Melwyn Abreo, Daniel Harvey, Heins Gschwend, Wenbao Li, Chi Tu, Rajender Kamboj, Michael Winther, Vishnumurthy Kodumuru, Cindy Hudson, Mikhail Kondratenko, Shifeng Liu, Vandna Raina, Serguei Sviridov, Zaihui Zhang, Mehran Seid Bagherzadeh, Shaoyi Sun
  • Publication number: 20060183782
    Abstract: Methods of using thiazolidine derivatives of formula (I) to treat cancer, inflammation, or other disorders related to the activities of protein phosphatases PTPN12 or PTPN2 in a mammal are disclosed. Pharmaceutical compositions containing such derivatives are disclosed.
    Type: Application
    Filed: May 8, 2003
    Publication date: August 17, 2006
    Inventors: Zaihui Zhang, Timothy Daynard, Gabriel Kalmar
  • Publication number: 20060148848
    Abstract: Methods of using isoquinolone derivatives to treat cancer or inflammation in a mammal and pharmaceutical compositions containing such derivatives are disclosed.
    Type: Application
    Filed: June 25, 2003
    Publication date: July 6, 2006
    Inventors: Zaihui Zhang, David Charest, Jun Yan
  • Patent number: 7022702
    Abstract: Pharmaceutical compositions and compounds are provided. The compounds of the invention have anti-proliferative activity, and may promote apoptosis in cells lacking normal regulation of cell cycle and death. In one embodiment of the invention, formulations of the compounds in combination with a physiologically acceptable carrier are provided. The pharmaceutical formulations are useful in the treatment of hyperproliferative disorders, which disorders include tumor growth, lymphoproliferative diseases, angiogenesis.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: April 4, 2006
    Assignee: QLT Inc.
    Inventors: Zaihui Zhang, Gregory B. Chopiuk, Timothy S. Daynard, Shisen Wang
  • Publication number: 20060009459
    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: Application
    Filed: February 9, 2005
    Publication date: January 12, 2006
    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 Winther, Zaihui Zhang, Melwyn Abreo, Mark Holladay, Wenbao Li, Sengen Sun, Chi Tu, Heinz Gschwend
  • Publication number: 20050272709
    Abstract: Pharmaceutical compositions and compounds are provided. The compounds of the invention deomonstrate anti-proliferative activity, and may promote apoptosis in cells lacking normal regulation of cell cycle and death. In one embodiment of the invention, pharmaceutical compositions of the compounds in combination with a physiologically acceptable carrier are provided. The pharmaceutical compositions are useful in the treatment of hyperproliferative disorders, which disorders include tumor growth, lymphoproliferative diseases, angiogenesis. The compounds of the invention are substituted pyrazoles and pyrazolines.
    Type: Application
    Filed: October 18, 2002
    Publication date: December 8, 2005
    Inventors: Zaihui Zhang, Tim Daynard, Mikhail Chafeev, Shisen Wang, Greg Chopiuk, Serguei Sviridov
  • Publication number: 20050065143
    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, 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: Application
    Filed: July 29, 2004
    Publication date: March 24, 2005
    Applicant: 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 Winther, Zaihui Zhang, Melwyn Abreo, Mark Holladay, Wenbao Li, Sengen Sun, Chi Tu, Heinz Gschwend
  • Publication number: 20030191144
    Abstract: Methods and compositions useful in the treatment of amyloidosis and conditions and diseases associated therewith, such as Alzheimer's disease, are provided. The methods involve administering to a subject in need thereof a pharmaceutical composition including one or more agents that modulate PPAR&agr; and/or PPAR&dgr; activity, resulting in an inhibition of &bgr;-amyloid production and/or release from cells of the subject, particularly brain cells.
    Type: Application
    Filed: December 19, 2002
    Publication date: October 9, 2003
    Applicant: Active Pass Pharmaceuticals, Inc.
    Inventors: Bruce P. Connop, Amelia Grant, David MacDonald, Parimal S. Nathwani, Peter B. Reiner, Zaihui Zhang
  • Publication number: 20030144294
    Abstract: A compound of the formula 1
    Type: Application
    Filed: December 4, 2002
    Publication date: July 31, 2003
    Inventors: Zaihui Zhang, Xinyao Du, Serguei Sviridov, Greg Chopiuk
  • Publication number: 20030096848
    Abstract: Pharmaceutical compositions and compounds are provided. The compounds of the invention have anti-proliferative activity, and may promote apoptosis in cells lacking normal regulation of cell cycle and death. In one embodiment of the invention, formulations of the compounds in combination with a physiologically acceptable carrier are provided. The pharmaceutical formulations are useful in the treatment of hyperproliferative disorders, which disorders include tumor growth, lymphoproliferative diseases, angiogenesis.
    Type: Application
    Filed: May 10, 2002
    Publication date: May 22, 2003
    Inventors: Zaihui Zhang, Gregory B. Chopiuk, Timothy S. Daynard, Shisen Wang