Patents by Inventor Yao-Chang Xu

Yao-Chang Xu 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: 7309702
    Abstract: A series of aryl piperazine compounds are effective pharmaceuticals for the treatment of conditions related to or affected by the serotonin 1A receptor; the compounds are particularly effective antagonists at that receptor, and are particularly useful for alleviating the symptoms of nicotine and tobacco withdrawal.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: December 18, 2007
    Assignees: Avera Pharmaceuticals, Inc., Eli Lilly and Company
    Inventors: Alexander Glenn Godfrey, Daniel Timothy Kohlman, John Cunningham O'Toole, Yao-Chang Xu, Tony Yantao Zhang, Jeffrey Forrester McKelvy
  • Publication number: 20070270466
    Abstract: The present invention relates to compounds of formula I: or a pharmaceutically acceptable acid addition salt thereof, wherein X is C(R3c)? or N?; R1 is C2-C6 alkyl, substituted C2-C6 alkyl, C3-C7 cycloalkyl, substituted C3-C7 cycloalkyl, phenyl, substituted phenyl, heterocycle, or substituted heterocycle; R2 is hydrogen, C1-C3 n-alkyl, C3-C6 cycloalkyl-C1-C3 alkyl, or a group of formula II provided that when R1 is C2-C6 alkyl or substituted C2-C6 alkyl, R2 is hydrogen or methyl; R3a, R3b and, when X is —C(R3c)?, R3c, are each independently hydrogen, fluoro, or methyl, provided that no more than one of R3a, R3b, and R3c may be other than hydrogen; R4 is hydrogen or C1-C3 alkyl; R5 is hydrogen, C1-C3 alkyl, or C3-C6 cycloalkylcarbonyl, provided that when R3a is other than hydrogen, R5 is hydrogen; R6 is hydrogen or C1-C6 alkyl; and n is an integer from 1 to 6 inclusively.
    Type: Application
    Filed: June 4, 2007
    Publication date: November 22, 2007
    Inventors: Maria-Jesus Blanco-Pillado, Michael Cohen, Sandra Filla, Kevin Hudziak, Daniel Kohlman, Dana Benesh, Frantz Victor, Yao-Chang Xu, Bai-Ping Ying, DeAnna Zacherl, Deyi Zhang, Brian Mathes
  • Patent number: 7291632
    Abstract: The present invention relates to compounds of formula I: (I) or a pharmaceutically acceptable acid addition salt thereof, where; X is C(R3c? or N?; R1 is C2–C6 alkyl, substituted C2–C6 alkyl, C3–C7 cycloalkyl, substituted C3–C7 cycloalkyl, phenyl, substituted phenyl, heterocycle, or substituted heterocycle; R2 is hydrogen, C1–C3 n-alkyl, C3–C6 cycloalkyl-C1–C3 alkyl, or a group of formula II (II) provided that when R1 is C2–C6 alkyl or substituted C2–C6 alkyl, R2 is hydrogen or methyl; R3a, R3b, and, when X is C(R3c)?, R3c, are each independently hydrogen, fluoro, or methyl, provided that no more than one of R3a, R3b, and R3c may be other than hydrogen; R4 is hydrogen or C1–C3 alkyl; R5 is hydrogen, C1–C3 alkyl, or C3–C6 cycloalkylcarbonyl, provided that when R3a is other than hydrogen, R5 is hydrogen; R6 is hydrogen or C1–C6 alkyl; and n is an integer from 1 to 6 inclusively.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: November 6, 2007
    Assignee: Eli Lilly and Company
    Inventors: Maria-Jesus Blanco-Pillado, Michael Philip Cohen, Sandra Ann Filla, Kevin John Hudziak, Daniel Timothy Kohlman, Dana Rae Benesh, Frantz Victor, Yao-Chang Xu, Bai-Ping Ying, DeAnna Piatt Zacherl, Deyi Zhang, Brian Michael Mathes
  • Publication number: 20070078169
    Abstract: The present invention relates to compounds of formula I: or a pharmaceutically acceptable acid addition salt thereof, where; X is —C(R4)? or —N?; Ar is phenyl, substituted phenyl, heterocycle, or substituted heterocycle; R1 and R2 are independently hydrogen or C1-C3 alkyl; R3 is hydrogen, fluoro, or methyl; when X is —C(R4)?, R4 is hydrogen, fluoro, or methyl, provided that no more than one of R3 and R4 may be other than hydrogen; and R5 is hydrogen, methyl, or ethyl. The compounds of the present invention are useful for activating 5-HT1F receptors, inhibiting dural protein extravasation, and for the treatment or prevention of migraine in a mammal.
    Type: Application
    Filed: December 6, 2004
    Publication date: April 5, 2007
    Inventors: Daniel Kohlman, Frantz Victor, Yao-Chang Xu, Bai-Ping Ying, Deyi Zhang
  • Publication number: 20060287363
    Abstract: The present invention relates to compounds of formula I: (I) or a pharmaceutically acceptable acid addition salt thereof, where; X is C(R3c? or N?; R1 is C2-C6 alkyl, substituted C2-C6 alkyl, C3-C7 cycloalkyl, substituted C3-C7 cycloalkyl, phenyl, substituted phenyl, heterocycle, or substituted heterocycle; R2 is hydrogen, C1-C3 n-alkyl, C3-C6 cycloalkyl-C1-C3 alkyl, or a group of formula II (II) provided that when R1 is C2-C6 alkyl or substituted C2-C6 alkyl, R2 is hydrogen or methyl; R3a, R3b, and, when X is C(R3c)?, R3c, are each independently hydrogen, fluoro, or methyl, provided that no more than one of R3a, R3b, and R3c may be other than hydrogen; R4 is hydrogen or C1-C3 alkyl; R5 is hydrogen, C1-C3 alkyl, or C3-C6 cycloalkylcarbonyl, provided that when R3a is other than hydrogen, R5 is hydrogen; R6 is hydrogen or C1-C6 alkyl; and n is an integer from 1 to 6 inclusively.
    Type: Application
    Filed: September 3, 2004
    Publication date: December 21, 2006
    Applicant: ELLI LILLY AND COMPANY
    Inventors: Maria-Jesus Blanco-Pillado, Michael Cohen, Sandra Filla, Kevin Hudzlak, Daniel Kohlman, Dana Benesh, Frantz Victor, Yao-Chang Xu, Bai-Ping Ying, DeAnna Zacherl, Deyi Zhang, Brian Mathes
  • Publication number: 20060211734
    Abstract: The present invention relates to compounds of formula 1: and pharmaceutically acceptable acid addition sails thereof. The compounds of the present invention are useful for activating 5-HT1F receptors, inhibiting neuronal protein extravasation, and for the treatment or preverition of migraine in mammals, particularly humans.
    Type: Application
    Filed: April 14, 2004
    Publication date: September 21, 2006
    Applicant: ELILILLY AND COMPANY
    Inventors: Maria-Jesus Blanco-Pillado, Dana Benesh, Sandra Filla, Kevin Hudziak, Brian Mathes, Daniel Kohlman, Bai-Ping Ying, Deyl Zhang, Yao-Chang Xu
  • Patent number: 7045545
    Abstract: The present invention provides serotonergic aminoalkylbenzofurans of Formula (I): where R, R1, R2, R3, R4, R4?, R5, R5?, and R12 are as described in the specification.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: May 16, 2006
    Assignee: Eli Lilly and Company
    Inventors: Karin Briner, Joseph Paul Burkhart, Timothy Paul Burkholder, Matthew Joseph Fisher, William Harlan Gritton, Daniel Timothy Kohlman, Sidney Xi Liang, Shawn Christopher Miller, Jeffrey Thomas Mullaney, Yao-Chang Xu, Yanping Xu
  • Patent number: 7001908
    Abstract: A series of aryl piperazine compounds are effective pharmaceuticals for the treatment of conditions related to or affected by the serotonin 1A receptor; the compounds are particularly effective antagonists at that receptor, and are particularly useful for alleviating the symptoms of nicotine and tobacco withdrawal.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: February 21, 2006
    Assignees: Avera Pharmaceuticals, Inc., Eli Lilly and Company
    Inventors: Alexander Glenn Godfrey, Daniel Timothy Kohlman, John Cunningham O'Toole, Yao-Chang Xu, Tony Yantao Zhang
  • Publication number: 20060009464
    Abstract: A series of aryl piperazine compounds are effective pharmaceuticals for the treatment of conditions related to or affected by the serotonin 1A receptor; the compounds are particularly effective antagonists at that receptor, and are particularly useful for alleviating the symptoms of nicotine and tobacco withdrawal.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 12, 2006
    Inventors: Alexander Godfrey, Daniel Kohlman, John O'Toole, Yao-Chang Xu, Tony Zhang, Jeffrey McKelvy
  • Publication number: 20050282817
    Abstract: A series of aryl piperazine compounds are effective pharmaceuticals for the treatment of conditions related to or affected by the serotonin 1A receptor; the compounds are particularly effective antagonists at that receptor, and are particularly useful for alleviating the symptoms of nicotine and tobacco withdrawal.
    Type: Application
    Filed: July 19, 2005
    Publication date: December 22, 2005
    Inventors: Alexander Godfrey, Daniel Kohlman, John O'Toole, Yao-Chang Xu, Tony Zhang
  • Publication number: 20050222206
    Abstract: The present invention relates to compounds of formula I: or pharmaceutically acceptable acid addition salts thereof, where; R1 is C1-C6 alkyl, substituted C1-C6 alkyl, C3-C7 cycloalkyl, substituted C3-C7 cycloalkyl, C3-C7 cycloalkyl-C1-C3 alkyl, substituted C3-C7 cycloalkyl-C1-C3 alkyl, phenyl, substituted phenyl, heterocycle, or substituted heterocycle; R2 is hydrogen, C1-C3 alkyl, C3-C6 cycloalkyl-C1-C3 alkyl, or a group of formula II R3 is hydrogen or C1-C3 alkyl; R4 is hydrogen, halo, or C1-C3 alkyl; R5 is hydrogen or C1-C3 alkyl; R6 is hydrogen or C1-C6 alkyl; and n is an integer from 1 to 6 inclusively. The compounds of the present invention are useful for activating 5-HT1F receptors, inhibiting neuronal protein extravasation, and for the treatment or prevention of migraine in a mammal. The present invention also relates to a process for the synthesis of intermediates in the synthesis of compounds of Formula I.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 6, 2005
    Inventors: Michael Cohen, Daniel Kohlman, Sidney Liang, Vincent Mancuso, Yao-Chang Xu, Bai-Ping Ying, DeAnna Zacherl, Deyi Zhang, Frantz Victor
  • Patent number: 6946579
    Abstract: A series of aryl piperazine compounds are effective pharmaceuticals for the treatment of conditions related to or affected by the serotonin 1A receptor; the compounds are particularly effective antagonists at that receptor, and are particularly useful for alleviating the symptoms of nicotine and tobacco withdrawal.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: September 20, 2005
    Assignee: Eli Lilly and Company
    Inventors: Alexander Glenn Godfrey, Daniel Timothy Kohlman, John Cunningham O'Toole, Yao-Chang Xu, Tony Yantao Zhang
  • Patent number: 6881733
    Abstract: The present invention provides serotonergic benzofurans of Formula (I): where A, R, R1, R2, R3, and R4 are as described in the specification.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: April 19, 2005
    Assignee: Eli Lilly and Company
    Inventors: Karin Briner, Joseph Paul Burkhart, Timothy Paul Burkholder, Brian Eugene Cunningham, Matthew Joseph Fisher, William Harlan Gritton, Cynthia Darshini Jesudason, Shawn Christopher Miller, Jeffrey Thomas Mullaney, Matthew Robert Reinhard, Roger Ryan Rothhaar, Freddie Craig Stevens, Leonard Larry Winneroski, Yanping Xu, Yao-Chang Xu
  • Patent number: 6828332
    Abstract: The present invention provides compounds of formula (I) and a method of inhibiting the reuptake of serotonin and antagonizing the serotonin receptor which comprises administering to a subject in need of such treatment an effective amount of a compound of formula (I).
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: December 7, 2004
    Assignee: Eli Lilly and Company
    Inventors: Daniel Timothy Kohlman, Sidney Xi Liang, Yao-Chang Xu
  • Publication number: 20040049083
    Abstract: A series of aryl piperazine compounds are effective pharmaceuticals for the treatment of conditions related to or affected by the serotonin 1A receptor; the compounds are particularly effective antagonists at that receptor, and are particularly useful for alleviating the symptoms of nicotine and tobacco withdrawal.
    Type: Application
    Filed: July 2, 2003
    Publication date: March 11, 2004
    Inventors: Alexander Glenn Godfrey, Daniel Timothy Kohlman, John Cunningham O'Toole, Yao-Chang Xu, Tony Yantao Zhang
  • Publication number: 20040044009
    Abstract: A series of aryl piperazine compounds are effective pharmaceuticals for the treatment of conditions related to or affected by the serotonin 1A receptor; the compounds are particularly effective antagonists at that receptor, and are particularly useful for alleviating the symptoms of nicotine and tobacco withdrawal.
    Type: Application
    Filed: April 16, 2003
    Publication date: March 4, 2004
    Inventors: Alexander Glenn Godfrey, Daniel Timothy Kohlman, John Cunningham O'Toole, Yao-Chang Xu, Tony Yantao Zhang
  • Patent number: 6664274
    Abstract: The present invention provides compounds of formula I and a method of inhibiting the reuptake of serotonin, antagonizing the 5-HT1A receptor and antagonizing the 5-HT2A receptor which comprises administering to a subject in need of such treatment an effective amount of a compound of formula I.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: December 16, 2003
    Assignee: Eli Lilly and Company
    Inventors: Sidney Xi Liang, Yao-Chang Xu
  • Patent number: 6660859
    Abstract: Described herein is a series of aryl piperazine compounds of the formula: wherein Ar′ is a mono or bicyclic aryl or heteroaryl radical substituted with one to three substituents selected from the group consisting of hydrogen, (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkylhalo, (C3-C5)cycloalkyl, (C3-C8)cycloalkenyl or halo; R1 is hydrogen, (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio; R2 is phenyl, naphthyl or (C3-C12)cycloalkyl substituted with one or two substituents selected from the group consisting of hydrogen (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkylhalo, (C3-C8)cycloalkyl, (C3-C8)cycloalkenyl or halo; R3 is selected from the group consisting of hydrogen (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkylhalo, (C3-C5)cycloalkyl, (C3-C8)cycloalkenyl or halo; X is —(C═O)—, —CHOH— or —CH2—; or a pharmac
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: December 9, 2003
    Assignee: Eli Lilly and Company
    Inventors: Daniel Timothy Kohlman, Yao-Chang Xu
  • Patent number: 6645967
    Abstract: Described herein is a method for potentiating the action of a serotonin reuptake inhibitor in increasing the availability of serotonin, norepinephrin and dopamine in the brain, by administering to a patient an effective amount of a compound of the formula wherein Ar′ is a mono or bicyclic aryl or heteroaryl radical substituted with one to three substituents selected from the group consisting of hydrogen, (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkylhalo, (C3-C8)cycloalkyl, (C3-C8)cycloalkenyl or halo; R1 is hydrogen, (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio; R2 is phenyl, naphthyl or (C3-C12)cycloalkyl substituted with one or two substituents selected from the group consisting of hydrogen (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkylhalo, (C3-C8)cycloalkyl, (C3-C8)cycloalkenyl or halo; R3 is selected from the group consisting of hydrogen (C1-C6)alkyl, (C1-C6)alkoxy, (C1-C6)alkylthio, (C
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: November 11, 2003
    Assignee: Eli Lilly and Company
    Inventors: Daniel Timothy Kohlman, Yao-Chang Xu
  • Patent number: 6608079
    Abstract: The present invention relates to a compound of formula (I), or a pharmaceutical acid addition salt thereof, which are useful for activating 5-HT1F receptors and inhibiting neuronal protein extravasation in a mammal.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: August 19, 2003
    Assignee: Eli Lilly and Company
    Inventors: John Mehnert Schaus, Yao-Chang Xu