Patents by Inventor Yi-Tsung Liu

Yi-Tsung Liu 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).

  • 17 Beta-hydroxysteroid dehydrogenase type 3 inhibitors for the treatment of androgen dependent diseases
    Publication number: 20060014755
    Abstract: There are disclosed compounds of the formula (I): prodrugs thereof, or pharmaceutically acceptable salts of the compounds or of said prodrugs which are useful as inhibitors of Type 3 17?-Hydroxysteroid Dehydrogenase. Also disclosed: are pharmaceutical compositions containing said compounds and their use for the treatment or prevention of androgen dependent diseases.
    Type: Application
    Filed: January 28, 2005
    Publication date: January 19, 2006
    Inventors: Timothy Guzi, Kamil Paruch, Alan Mallams, Jocelyn Rivera, Ronald Doll, Viyyoor Girijavallabhan, Jonathan Pachter, Yi-Tsung Liu, Anil Saksena
  • Novel peptides as NS3-serine protease inhibitors of hepatitis C virus
    Publication number: 20050176648
    Abstract: The present invention discloses novel peptide compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Application
    Filed: March 24, 2005
    Publication date: August 11, 2005
    Applicant: Schering-Plough Corporation
    Inventors: Anil Saksena, Viyyoor Girijavallabhan, Stephane Bogen, Raymond Lovey, Edwin Jao, Frank Bennett, Jinping McCormick, Haiyan Wang, Russell Pike, Yi-Tsung Liu, Tin-Yau Chan, Zhaoning Zhu, Ashok Arasappan, Kevin Chen, Srikanth Venkatraman, Tejal Parekh, Patrick Pinto, Bama Santhanam, F. Njoroge, Ashit Ganguly, Henry Vaccaro, Scott Kemp, Odile Levy, Marguerita Lim-Wilby, Susan Tamura
  • 17?-hydroxysteroid dehydrogenase type 3 inhibitors for the treatment of androgen dependent diseases
    Patent number: 6903102
    Abstract: There are disclosed compounds of the formula (I): prodrugs thereof, or pharmaceutically acceptable salts of the compounds or of said prodrugs which are useful as inhibitors of Type 3 17?-Hydroxysteroid Dehydrogenase. Also disclosed are pharmaceutical compositions containing said compounds and their use for the treatment or prevention of androgen dependent diseases.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: June 7, 2005
    Assignee: Schering Corporation
    Inventors: Timothy J. Guzi, Kamil Paruch, Alan K. Mallams, Jocelyn D. Rivera, Ronald J. Doll, Viyyoor M. Girijavallabhan, Jonathan A. Pachter, Yi-Tsung Liu, Anil K. Saksena
  • Compounds as NS3-serine protease inhibitors of hepatitis C virus
    Patent number: 6894072
    Abstract: The present invention discloses novel compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: May 17, 2005
    Assignee: Schering Corporation
    Inventors: Ashok Arasappan, Frank Bennett, Stephane L. Bogen, Kevin X. Chen, Edwin Jao, Yi-Tsung Liu, Raymond G. Lovey, Vincent S. Madison, Latha G. Nair, F. George Njoroge, Anil K. Saksena, Mousumi Sannigrahi, Srikanth Venkatraman, Viyyoor M. Girijavallabhan
  • Novel peptides as NS3-serine protease inhibitors of hepatitis C virus
    Publication number: 20050059606
    Abstract: The present invention discloses novel peptide compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such peptides as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Application
    Filed: September 3, 2004
    Publication date: March 17, 2005
    Applicants: Dendreon Corporation, Schering Corporation
    Inventors: Anil Saksena, Viyyoor Girijavallabhan, Raymond Lovey, Edwin Jao, Ashok Arasappan, Tejal Parekh, Patrick Pinto, Frank Bennett, Jinping McCormick, Haiyan Wang, Russell Pike, Stephane Bogen, Yi-Tsung Liu, F. Njoroge, Ashit Ganguly, Terence Brunck, Scott Kemp, Odile Levy, Marguerita Lim-Wilby
  • Novel peptides as NS3-serine protease inhibitors of hepatitis C virus
    Publication number: 20040254117
    Abstract: The present invention discloses novel compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Application
    Filed: July 19, 2001
    Publication date: December 16, 2004
    Inventors: Anil K. Saksena, Viyyoor Moopil Girijavallabhan, Raymond G. Lovey, Edwin Jao, Frank Bennett, Jinping L. McCormick, Haiyan Wang, Russell E. Pike, Stephane L. Bogen, Tin-Yau Chan, Yi-Tsung Liu, Zhaoning Zhu, F. George Njoroge, Ashok Arasappan, Tejal Parekh, Ashit K. Ganguly, Kevin X. Chen, Srikanth Venkatraman, Henry A. Vaccaro, Patrick A. Pinto, Bama Santhanam, Scott Jeffrey Kemp, Odile Esther Levy, Marguerita Lim-Wilby, Susan Y. Tamura, Wanli Wu, Siska Hendrata, Yuhua Huang
  • Peptides as NS3-serine protease inhibitors of hepatitis C virus
    Patent number: 6800434
    Abstract: The present invention discloses novel peptide compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such peptides as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: October 5, 2004
    Assignees: Schering Corporation, Dendreon Corporation
    Inventors: Anil K. Saksena, Viyyoor Moopil Girijavallabhan, Raymond G. Lovey, Edwin Jao, Frank Bennett, Jinping L. McCormick, Haiyan Wang, Russell E. Pike, Stephane L. Bogen, Yi-Tsung Liu, Ashok Arasappan, Tejal Parekh, Patrick A. Pinto, F. George Njoroge, Ashit K. Ganguly, Terence K. Brunck, Scott Jeffrey Kemp, Odile Esther Levy, Marguerita Lim-Wilby
  • 17 Beta-hydroxysteroid dehydrogenase type 3 inhibitors for the treatment of androgen dependent diseases
    Publication number: 20040138226
    Abstract: In its many embodiments, the present invention provides a novel class of compounds as inhibitors of type 3 17&bgr;-hydroxysteroid dehydrogenase, methods of preparing such compounds, pharmaceutical compositions containing one or more such compounds, methods of preparing pharmaceutical formulations comprising one or more such compounds, and methods of treatment, prevention, inhibition, or amelioration of one or more diseases associated with type 3 17&bgr;-hydroxysteroid dehydrogenase using such compounds or pharmaceutical compositions.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 15, 2004
    Applicant: SCHERING CORPORATION
    Inventors: Timothy J. Guzi, Yi-Tsung Liu, Ronald J. Doll, Anil Saksena, Viyyoor M. Girijavallabhan, Jonathan A. Pachter
  • 17 Beta-hydroxysteroid dehydrogenase type 3 inhibitors for the treatment of androgen dependent diseases
    Publication number: 20040132736
    Abstract: There are disclosed compounds of the formula (I): 1
    Type: Application
    Filed: September 5, 2002
    Publication date: July 8, 2004
    Applicant: Schering Corporation
    Inventors: Timothy J. Guzi, Kamil Paruch, Alan K. Mallams, Jocelyn D. Rivera, Ronald J. Doll, Viyyoor M. Girijavallabhan, Jonathan A. Pachter, Yi-Tsung Liu, Anil K. Saksena
  • Novel peptides as NS3-serine protease inhibitors of hepatitis C virus
    Publication number: 20030216325
    Abstract: The present invention discloses novel compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Application
    Filed: July 19, 2001
    Publication date: November 20, 2003
    Inventors: Anil K. Saksena, Viyyoor Moopil Girijavallabhan, Raymond G. Lovey, Edwin Jao, Frank Bennett, Jinping L. McCormick, Haiyan Wang, Russell E. Pike, Stephane L. Bogen, Tin-Yau Chan, Yi-Tsung Liu, Zhaoning Zhu, F. George Njoroge, Ashok Arasappan, Tejal Parekh, Ashit K. Ganguly, Kevin X. Chen, Srikanth Venkatraman, Henry A. Vaccaro, Patrick A. Pinto, Bama Santhanam, Scott Jeffrey Kemp, Odile Esther Levy, Marguerita Lim-Wilby, Susan Y. Tamura, Wanli Wu, Siska Hendrata, Yuhua Huang
  • Novel compounds as NS3-serine protease inhibitors of hepatitis C virus
    Publication number: 20030207861
    Abstract: The present invention discloses novel compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Application
    Filed: January 21, 2003
    Publication date: November 6, 2003
    Applicant: SCHERING CORPORATION
    Inventors: Ashok Arasappan, Frank Bennett, Stephane L. Bogen, Kevin X. Chen, Edwin Jao, Yi-Tsung Liu, Raymond G. Lovey, Vincent S. Madison, Latha G. Nair, F. George Njoroge, Anil K. Saksena, Mousumi Sannigrahi, Srikanth Venkatraman, Viyyoor M. Girijavallabhan
  • Novel peptides as NS3-serine protease inhibitors of hepatitis C virus
    Publication number: 20030036501
    Abstract: The present invention discloses novel peptide compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such peptides as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Application
    Filed: July 19, 2001
    Publication date: February 20, 2003
    Inventors: Anil K. Saksena, Viyyoor Moopil Girijavallabhan, Raymond G. Lovey, Edwin E. Jao, Frank Bennett, Jinping L. McCormick, Haiyan Wang, Russell E. Pike, Stephane L. Bogen, Yi-Tsung Liu, Ashok Arasappan, Tejal Parekh, Patrick A. Pinto, F. George Njoroge, Ashit K. Ganguly, Terence K. Brunck, Scott Jeffrey Kemp, Odile Esther Levy, Marguerita Lim-Wilby
  • Novel peptides as NS3-serine protease inhibitors of hepatitis C virus
    Publication number: 20020160962
    Abstract: The present invention discloses novel peptide compounds which have HCV protease inhibitory activity as well as methods for preparing such compounds. In another embodiment, the invention discloses pharmaceutical compositions comprising such compounds as well as methods of using them to treat disorders associated with the HCV protease.
    Type: Application
    Filed: July 19, 2001
    Publication date: October 31, 2002
    Inventors: Anil K. Saksena, Viyyoor Moopil Girijavallabhan, Stephane L. Bogen, Raymond G. Lovey, Edwin E. Jao, Frank Bennett, Jinping L. Mc Cormick, Haiyan Wang, Russell E. Pike, Yi-Tsung Liu, Tin-Yau Chan, Zhaoning Zhu, Ashok Arasappan, Kevin X. Chen, Srikanth Venkatraman, Tejal Parekh, Patrick A. Pinto, Bama Santhanam, F. George Njoroge, Ashit K. Ganguly, Henry A. Vaccaro, Scott Jeffrey Kemp, Odile Esther Levy, Marguerita Lim-Wilby, Susan Y. Tamura
  • Compounds useful for inhibition of farnesyl protein transferase
    Patent number: 6440974
    Abstract: Novel compounds of the formula: are disclosed. In Formula 1.0 a represents N or NO, R1 and R3 are halo, R2 and R4 are independently H or halo provided that at least one is H, X is C, CH or N, and T represents a five or six membered heterocycloalkyl ring having one or two heteroatoms selected from S or O. Also disclosed are methods of inhibiting farnesyl protein transferase and methods for treating tumor cells.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: August 27, 2002
    Assignee: Schering Corporation
    Inventors: Ronald J. Doll, Carmen Alvarez, Tarik Lalwani, Yi-Tsung Liu
  • Compounds useful for inhibition of farnesyl protein transferase
    Publication number: 20010014681
    Abstract: Novel compounds of the formula: 1
    Type: Application
    Filed: February 20, 2001
    Publication date: August 16, 2001
    Inventors: Ronald J. Doll, Carmen Alvarez, Tarik Lalwani, Yi-Tsung Liu
  • Compounds useful for inhibition of farnesyl protein transferase
    Patent number: 6228865
    Abstract: Novel compounds of the formula: are disclosed. In Formula 1.0 a represents N or NO, R1 and R3 are halo, R2 and R4 are independently H or halo provided that at least one is H, X is C, CH or N, and T represents a five or six membered heterocycloalkyl ring having one or two heteroatoms selected from S or O. Also disclosed are methods of inhibiting farnesyl protein transferase and methods for treating tumor cells.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: May 8, 2001
    Assignee: Schering Corporation
    Inventors: Ronald J. Doll, Carmen Alvarez, Tarik Lalwani, Yi-Tsung Liu
  • Tricyclic compounds useful as FPT inhibitors
    Patent number: 6071907
    Abstract: Novel tricyclic compounds and pharmaceutical compositions are disclosed which are inhibitors of the enzyme, farnesyl protein transferase. Also disclosed is a method of inhibiting Ras function and therefore inhibiting the abnormal growth of cells. The method comprises administering the novel tricyclic compound to a biological system. In particular, the method inhibits the abnormal growth of cells in a mammals such as a human.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: June 6, 2000
    Assignee: Schering Corporation
    Inventors: F. George Njoroge, Yi-Tsung Liu, Arthur G. Taveras
  • Tetrahydrofuran antifungals
    Patent number: 5714490
    Abstract: A compound represented by the formula I ##STR1## wherein X is independently both F or both Cl or one X is independently F and the other is independently Cl; R.sub.1 is a straight or branched chain (C.sub.3 to C.sub.8) alkyl group substituted by one or two amino acid ester groups (e.g., an amino acid ester group convertible in vivo into a hydroxy group) thereof or a pharmaceutically acceptable salt thereof and pharmaceutical compositions thereof useful for treating and/or preventing fungal infections are disclosed.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: February 3, 1998
    Assignee: Schering Corporation
    Inventors: Anil K. Saksena, Viyyoor M. Girijavallabhan, Raymond G. Lovey, Russell E. Pike, Haiyan Wang, Yi-Tsung Liu, Ashit K. Ganguly, Frank Bennett
  • Tetrahydrofuran antifungals
    Patent number: 5710154
    Abstract: A compound represented by the formula I ##STR1## wherein X is independently both F or both Cl or one X is independently F and the other is independently Cl; R.sub.1 is a straight or branched chain (C.sub.3 to C.sub.8) alkyl group substituted by one or two groups convertible in vivo into hydroxy moieties, (e.g., a polyether ester, amino acid ester or phosphate ester) thereof or a pharmaceutically acceptable salt thereof and pharmaceutical compositions thereof useful for treating and/or preventing fungal infections are disclosed.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: January 20, 1998
    Assignee: Schering Corporation
    Inventors: Anil K. Saksena, Viyyoor M. Girijavallabhan, Raymond G. Lovey, Russell E. Pike, Haiyan Wang, Yi-Tsung Liu, Ashit K. Ganguly, Frank Bennett
  • Tetrahydrofuran antifungals
    Patent number: 5703079
    Abstract: A compound represented by the formula I ##STR1## wherein X is independently both F or both Cl or one X is independently F and the other is independently Cl; R.sub.1 is a straight or branched chain (C.sub.3 to C.sub.8) alkyl group substituted by one or two polyetyher ester groups (e.g., a polyether ester convertible in vivo into a hydroxy group) thereof or a pharmaceutically acceptable salt thereof and pharmaceutical compositions thereof useful for treating and/or preventing fungal infections are disclosed.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 30, 1997
    Assignee: Schering Corporation
    Inventors: Anil K. Saksena, Viyyoor M. Girijavallabhan, Raymond G. Lovey, Russell E. Pike, Haiyan Wang, Yi-Tsung Liu, Ashit K. Ganguly, Frank Bennett