Patents by Inventor Leifeng Cheng

Leifeng Cheng 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: 8415378
    Abstract: or a pharmaceutically suitable salt thereof, wherein, R1 and R2 independently are hydrogen, deuterium, aryl, hetero aryl, C1-C8 alkyl, optionally being substituted with one or more substituents independently being R3, R3 is an aryl, hetero aryl, fluorine(s), a C1-C6 alkyl containing one or more fluorine, a C1-C6 alkyl containing one or more deuterium, a C1-C6 alkyl containing hydroxy, the aryl and heteroaryl optionally being substituted with one or more halogen, a fluorinated alkoxy, a fluorinated alkyl, a sulfonyl, one or more deuterium, a C1-6 alkyl, a C1-6 alkoxy, a nitrile, or R3 is a C1-6 alkyl optionally substituted with one or more of the following groups: COOR4, OCOR4, CONR5R6, NR5COR6, OR4; wherein, R4 is a C1-10 alkyl optionally substituted with one or more fluorine, deuterium, alkoxy, arylcarboxylate, alkyl carboxylate; R5 and R6 are independently selected from hydrogen, alkyl or they may together form a 4-8 membered carbon ring; or R1 and R2 form a 3-10 membered carbon ring optionally compris
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: April 9, 2013
    Assignee: AstraZeneca AB
    Inventors: Jonas Boström, Leifeng Cheng, Tomas Fex, Michael Karle, Daniel Pettersen, Peter Schell
  • Patent number: 7875626
    Abstract: The present invention relates to 4,5,6,7-tetrahydropyrrolo[3,2-c]pyridin-4-one and 4,5-dihydropyrrolo[3,2-c]pyridin-4-one compounds of formula (I) and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: January 25, 2011
    Assignee: AstraZeneca AB
    Inventor: Leifeng Cheng
  • Publication number: 20100261755
    Abstract: or a pharmaceutically suitable salt thereof, wherein, R1 and R2 independently are hydrogen, deuterium, aryl, hetero aryl, C1-C8 alkyl, optionally being substituted with one or more substituents independently being R3, R3 is an aryl, hetero aryl, fluorine(s), a C1-C6 alkyl containing one or more fluorine, a C1-C6 alkyl containing one or more deuterium, a C1-C6 alkyl containing hydroxy, the aryl and heteroaryl optionally being substituted with one or more halogen, a fluorinated alkoxy, a fluorinated alkyl, a sulfonyl, one or more deuterium, a C1-6 alkyl, a C1-6 alkoxy, a nitrile, or R3 is a C1-6 alkyl optionally substituted with one or more of the following groups: COOR4, OCOR4, CONR5R6, NR5COR6, OR4; wherein, R4 is a C1-10 alkyl optionally substituted with one or more fluorine, deuterium, alkoxy, arylcarboxylate, alkyl carboxylate; R5 and R6 are independently selected from hydrogen, alkyl or they may together form a 4-8 membered carbon ring; or R1 and R2 form a 3-10 membered carbon ring optionally comprising
    Type: Application
    Filed: April 6, 2010
    Publication date: October 14, 2010
    Applicant: AstraZeneca AB
    Inventors: Jonas BOSTRÖM, Leifeng Cheng, Tomas Fex, Michael Karle, Daniel Pettersen, Peter Schell
  • Patent number: 7799804
    Abstract: The present invention relates to compounds of formula (I) and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: September 21, 2010
    Assignee: Astrazeneca AB
    Inventor: Leifeng Cheng
  • Publication number: 20100234439
    Abstract: The present invention relates to a 1,5-diphenylpyrazole compound and its use in the treatment of obesity, psychiatric and neurological disorders, to methods for the its therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: June 18, 2007
    Publication date: September 16, 2010
    Inventor: Leifeng Cheng
  • Publication number: 20100234438
    Abstract: The present invention relates to a 1,5-diphenylpyrazole compound and its use in the treatment of obesity, psychiatric and neurological disorders, to methods for the its therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: June 18, 2007
    Publication date: September 16, 2010
    Inventor: Leifeng Cheng
  • Publication number: 20090227555
    Abstract: The present invention relates to certain novel pyridin compounds of Formula (I) to processes for preparing such compounds, to their utility as P2Y12 inhibitors and as anti-thrombotic agents etc, and processes for their preparation, their use as medicaments in cardiovascular diseases as well as pharmaceutical compositions containing them.
    Type: Application
    Filed: June 23, 2008
    Publication date: September 10, 2009
    Applicant: AstraZeneca AB
    Inventors: Peter Bach, Jonas Bostrom, Kay Brickmann, Leifeng Cheng, Fabrizio Giordanetto, Robert Groneberg, Darren Harvey, Michael O'Sullivan, Fredrik Zetterberg
  • Patent number: 7576095
    Abstract: The present invention relates to 4,5-dihydropyrrolo[3,2-c]pyridin-4-one compounds of formula IA and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: August 18, 2009
    Assignee: Astrazeneca AB
    Inventor: Leifeng Cheng
  • Publication number: 20090156616
    Abstract: The present invention relates to compounds of formula (I) and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: July 17, 2006
    Publication date: June 18, 2009
    Inventors: Jonas Bostrom, Leifeng Cheng, Roine Olsson
  • Publication number: 20090149463
    Abstract: The present invention relates to compounds of formula (I) and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: February 16, 2005
    Publication date: June 11, 2009
    Inventors: Leifeng Cheng, Eva-Lotte Lindstedt-Alstermark, Anna Maria Persdotter Boije
  • Publication number: 20090088441
    Abstract: The present invention relates to novel compounds of the general formula (I) wherein R1, R4, R5 and X are as defined, having a positive allosteric GABAB receptor (GBR) modulator effect, methods for the preparation of said compounds and to their use, optionally in combination with a GABAB agonist, for the inhibition of transient lower esophageal sphincter relaxations, for the treatment of gastroesophageal reflux disease, as well as for the treatment of functional gastrointestinal disorders and irritable bowel syndrome (IBS).
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Inventors: Leifeng Cheng, Michael Karle
  • Publication number: 20090088439
    Abstract: The present invention relates to novel compounds of the general formula (I) wherein R1, R2, R3 and R4 are as defined, having a positive allosteric GABAB receptor (GBR) modulator effect, methods for the preparation of said compounds and to their use, optionally in combination with a GABAB agonist, for the inhibition of transient lower esophageal sphincter relaxations, for the treatment of gastroesophageal reflux disease, as well as for the treatment of functional gastrointestinal disorders and irritable bowel syndrome (IBS).
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Inventors: Leifeng Cheng, Maria Jonforsen, Peter Schell
  • Publication number: 20090042852
    Abstract: The present invention relates to certain novel pyridin compounds of Formula (I) to processes for preparing such compounds, to their utility as P2Y12 inhibitors and as anti-trombotic agents etc, and processes for their preparation, their use as medicaments in cardiovascular diseases as well as pharmaceutical compositions containing them.
    Type: Application
    Filed: January 4, 2006
    Publication date: February 12, 2009
    Applicant: ASTRAZENECA AB
    Inventors: Peter Bach, Jonas Bostrom, Kay Brickmann, Leifeng Cheng, Fabrizio Giordanetto, Robert D. Groneberg, Darren Martin Harvey, Michael F. O'Sullivan, Fredrik Zetterberg, Krister Osterlund
  • Publication number: 20090023704
    Abstract: The present invention relates to novel xanthine compounds of the general formula (I) wherein R1, R2, R3 and R4 are as defined, having a positive allosteric GABAB receptor (GBR) modulator effect, methods for the preparation of said compounds and to their use, optionally in combination with a GABAB agonist, for the inhibition of transient lower esophageal sphincter relaxations, for the treatment of gastroesophageal reflux disease, as well as for the treatment of functional gastrointestinal disorders and irritable bowel syndrome (IBS).
    Type: Application
    Filed: April 17, 2008
    Publication date: January 22, 2009
    Applicant: ASTRAZENECA AB
    Inventors: Leifeng Cheng, Sara Holmqvist, Florian Raubacher, Peter Schell
  • Publication number: 20090005415
    Abstract: Salts of 1,2-diarylimidazole-4-carboxamides and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: September 12, 2006
    Publication date: January 1, 2009
    Inventors: Matti Ahlqvist, Leifeng Cheng, Robert Lundqvist, Henrik Sorensen
  • Publication number: 20080319019
    Abstract: The present invention relates to certain 1,2-diarylimidazoles of formula I and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: December 21, 2005
    Publication date: December 25, 2008
    Inventor: Leifeng Cheng
  • Publication number: 20080312269
    Abstract: The present invention relates to 4,5,6,7-tetrahydropyrrolo[3,2-c]pyridin-4-one and 4,5-dihydropyrrolo[3,2-c]pyridin-4-one compounds of formula (I) and processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: October 5, 2006
    Publication date: December 18, 2008
    Inventor: Leifeng Cheng
  • Publication number: 20080306115
    Abstract: The present invention relates to substituted 1,2-diphenylimidazol-4-carboxamide compounds of formula I to processes for preparing such compounds, their use in the treatment of obesity, psychiatric and neurological disorders, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Application
    Filed: September 12, 2006
    Publication date: December 11, 2008
    Inventor: Leifeng Cheng
  • Publication number: 20080287517
    Abstract: The present invention relates to compounds of formula I wherein R1 represents a group R5O— in which R5 represents a C3-7alkyl group substituted by one or more fluoro or R5 represents a C3-7alkylsulphonyl group which is optionally substituted by one or more fluoro; R2 represents a C1-4alkyl group, hydroxy, fluoro, chloro or cyano wherein each R2 is independently selected when n is >1; R3 represents a) cyclohexyl optionally substituted by one or more of the following: hydroxy, fluoro, amino, mono or diC1-3alkylamino, carboxy or a C1-4alkoxycarbonyl group b) piperidino substituted by one or more hydroxy c) unsubstituted piperidino but only when one of the following applies: R4 represents cyano or R1 represents 3-fluoropropylsulphonyloxy or R1 represents 3,3,3-trifluoropropoxy or R1 represents 3-fluoropropoxy or R2 is methyl d) phenyl substituted by one or more of the following: hydroxy, halo or a C1-4alkyl group e) pyridyl substituted by a C1-4alkyl group or f) a C4-9alkyl group; R4 represents cyano or me
    Type: Application
    Filed: July 17, 2006
    Publication date: November 20, 2008
    Inventors: Leifeng Cheng, Maria Jonforsen, Peter Schell
  • Publication number: 20080262064
    Abstract: The present invention relates to novel imidazole compounds having a positive allosteric GABAB receptor (CUR) modulator effect, methods for the preparation of said compounds and to their use, optionally in combination with a GABAB agonist, for the inhibition of transient lower esophageal sphincter relaxations, for the treatment of gastroesophageal reflux disease, as well as for the treatment of functional gastrointestinal disorders and irritable bowel syndrome (IBS).
    Type: Application
    Filed: April 17, 2008
    Publication date: October 23, 2008
    Applicant: ASTRAZENECA AB
    Inventors: Udo Bauer, Wayne Brailsford, Leifeng Cheng, Maria Jonforsen, Florian Raubacher, Peter Schell, Tor Svensson