Patents by Inventor Shen-Chun Kuo

Shen-Chun Kuo 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: 9487523
    Abstract: The invention encompasses a novel process for making piperidinone carboxamide indane and azainane derivatives, which are CGRP receptor antagonists useful for the treatment of migraine, utilizing a highly effective spiroacid synthesis.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: November 8, 2016
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Kevin M. Belyk, Edward Cleator, Shen-Chun Kuo, Peter Emmanuel Maligres, Bangping Xiang, Nobuyoshi Yasuda, Jianguo Yin
  • Patent number: 9233925
    Abstract: The present invention provides novel processes for the preparation of N-substituted benzamides having the formula VIc: In some embodiments, the invention provides a process for preparation of roflumilast and other pharmaceutically active species. Novel compounds, including intermediates for the synthesis of roflumilast, are also provided.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: January 12, 2016
    Assignee: ScinoPharm (Changshu) Pharmaceuticals, Ltd.
    Inventors: Yi-Jing Chen, Stanislaw Pikul, Shen-Chun Kuo, Guo-dong Chu
  • Publication number: 20150274667
    Abstract: The present invention provides novel processes for the preparation of N-substituted benzamides having the formula VIc: In some embodiments, the invention provides a process for preparation of roflumilast and other pharmaceutically active species. Novel compounds, including intermediates for the synthesis of roflumilast, are also provided.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 1, 2015
    Inventors: Yi-Jing Chen, Stanislaw Pikul, Shen-Chun Kuo, Guo-dong Chu
  • Patent number: 9085533
    Abstract: The present invention provides novel processes for the preparation of N-substituted benzamides having the formula (VIc). In some embodiments, the invention provides a process for preparation of roflumilast and other pharmaceutically active species. Novel compounds, including intermediates for the synthesis of roflumilast, are also provided.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: July 21, 2015
    Assignee: ScinoPharm (Changshu) Pharmaceuticals, Ltd.
    Inventors: Yi-Jing Chen, Stanislaw Pikul, Shen-Chun Kuo, Guo-dong Chu
  • Publication number: 20150038707
    Abstract: Methods for preventing pest infestations are disclosed. In some embodiments, the methods for preventing infestations involve use of pyrethroid insecticides or the stereoisomers or salts thereof.
    Type: Application
    Filed: September 19, 2013
    Publication date: February 5, 2015
    Inventors: Kevin M. Belyk, Edward Cleator, Shen-Chun Kuo, Peter Emmanuel Maligres, Bangping Xiang, Nobuyoshi Yasuda, Jianguo Yin
  • Publication number: 20150025246
    Abstract: The present invention provides novel processes for the preparation of N-substituted benzamides having the formula (VIc). In some embodiments, the invention provides a process for preparation of roflumilast and other pharmaceutically active species. Novel compounds, including intermediates for the synthesis of roflumilast, are also provided.
    Type: Application
    Filed: March 7, 2013
    Publication date: January 22, 2015
    Applicant: Scinopharm (Changshu) Pharmaceuticals, Ltd.
    Inventors: Yi-Jing Chen, Stanislaw Pikul, Shen-Chun Kuo, Guo-dong Chu
  • Patent number: 8680294
    Abstract: Processes useful for the preparation of a Compound of Formula I: Formula (I). Intermediates useful for the preparation of the compound of Formula I, and processes useful for preparing said intermediates are disclosed.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 25, 2014
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: John Traverse, William M. Leong, Steven P. Miller, Jennifer Albaneze-Walker, Thomas J. Hunter, Lijun Wang, Hongbiao Liao, Ashok Arasappan, Scott T. Trzaska, Randi M. Smith, Azzeddine Lekhal, Stephane L. Bogen, Jianshe Kong, Frank Bennett, F. George Njoroge, Marc Poirier, Shen-Chun Kuo, Yonggang Chen, Kenneth S. Matthews, Patrice Demonchaux, Amadeo Ferreira
  • Patent number: 8598343
    Abstract: A process for preparing 7-[2-[4-(6-fluoro-3-methyl-1,2-benzisoxazol-5-yl)-1-piperazinyl]ethyl]-2-(1-propynyl)-7H-pyrazolo-[4,3-e]-[1,2,4]-triazolo[1,5-c]pyrimidin-5-amine, intermediates useful in that process, and processes for preparing said intermediates are disclosed.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: December 3, 2013
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Shen-Chun Kuo, Yonggang Chen, Jeffrey M. Eckert, William W. Leong, Nanfei Zou, Gabriel C. Kuklis
  • Publication number: 20120220769
    Abstract: A process for preparing 7-[2-[4-(6-fluoro-3-methyl-1,2-benzisoxazol-5-yl)-1-piperazinyl]ethyl]-2-(1-propynyl)-7H-pyrazolo-[4,3-e]-[1,2,4]-triazolo[1,5-c]pyrimidin-5-amine, intermediates useful in that process, and processes for preparing said intermediates are disclosed.
    Type: Application
    Filed: August 3, 2010
    Publication date: August 30, 2012
    Applicant: Schering Corporation
    Inventors: Shen-Chun Kuo, Yonggang Chen, Jeffrey M. Eckert, William W. Leong, Nanfei Zou, Gabriel C. Kuklis
  • Publication number: 20120178942
    Abstract: Processes useful for the preparation of a Compound of Formula I: Formula (I). Intermediates useful for the preparation of the compound of Formula I, and processes useful for preparing said intermediates are disclosed.
    Type: Application
    Filed: July 27, 2010
    Publication date: July 12, 2012
    Inventors: John Traverse, William M. Leong, Steven P. Miller, Jennifer Albaneze-Walker, Thomas J. Hunter, Lijun Wang, Hongbiao Liao, Ashok Arasappan, Scott T. Trzaska, Randi M. Smith, Azzeddine Lekhal, Stephane L. Bogen, Jianshe Kong, Frank Bennett, F. George Njoroge, Marc Poirier, Shen-Chun Kuo, Yonggang Chen, Kenneth S. Matthews, Patrice Demonchaux, Amadeo Ferreira
  • Publication number: 20120065397
    Abstract: The present invention discloses a novel process to prepare ketone amides, which are useful intermediates for the preparation of antagonists of CCR5 receptor and therefore useful for the treatment of HIV virus infected mammals. It specifically discloses a novel process to synthesize 1-(2,4-dimethylpyrimidine-5-carbonyl)-4-piperidone, 1-[(2,4-dimethyl-3-pyridinyl)carbonyl]-4-piperidone and related compounds. A salient feature of the invention is the use of a three-phase reaction medium with an organic phase and a buffer salt slurry.
    Type: Application
    Filed: November 23, 2011
    Publication date: March 15, 2012
    Applicant: Scherimg Corporation
    Inventors: Shen-Chun KUO, David Jieh-Shyh TSAI, Hongbiao LIAO
  • Patent number: 8076479
    Abstract: Disclosed is a process for the synthesis of compounds of Formula I by sequentially aminating, first with a primary amine and then with a secondary amine, an intermediate compound of the structure of Formula E1, wherein R1 is a linear, branched, or cyclic alkyloxy functional group of the structure (—R2a—OH), R2a is a linear, branched or cyclic alkyl group, R2 is a linear, branched or cyclic alkyl group, and R3 is an alkylene-heterocycle, said process comprising forming intermediate compound of Formula E1 by reacting, in a refluxing reaction solvent selected from alcohols having 5 or less carbon atoms and mixtures of two or more thereof, a methanol solution of a salt of a 4-alkyl-3-amino-pyrazole compound of Formula C1, with a diamidization reagent selected from dimethylmalonate, monomethylmalonyl-chloride, and malonyl dichloride in the presence of a Lewis base having sufficient proton affinity to abstract a proton from the 1-position nitrogen on the pyrazole ring.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: December 13, 2011
    Assignee: Schering Corporation
    Inventors: Frank Xing Chen, Kartik M. Keertikar, Shen-Chun Kuo, Hong-Chang Lee, Ramani R. Raghavan, George G. Wu, Ji Xie
  • Patent number: 7759487
    Abstract: The present invention discloses a novel process to prepare ketone amides, which are useful intermediates for the preparation of antagonists of CCR5 receptor and therefore useful for the treatment of HIV virus infected mammals. It specifically discloses a novel process to synthesize 1-(2,4-dimethylpyrimidine-5-carbonyl)-4-piperidone, 1-[(2,4-dimethyl-3-pyridinyl)carbonyl]-4-piperidone and related compounds. A salient feature of the invention is the use of a three-phase reaction medium with an organic phase and a buffer salt slurry.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: July 20, 2010
    Assignee: Schering Corporation
    Inventors: Shen-Chun Kuo, David Jieh-Shyh Tsai, Hongbiao Liao
  • Patent number: 7737284
    Abstract: This invention relates to a novel process for the synthesis of Temozolomide, an antitumor compound, and analogs, and to intermediates useful in this novel process.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: June 15, 2010
    Assignee: Schering Plough Corp.
    Inventors: Shen-Chun Kuo, Janet L. Mas, Donald Chen-tung Hou
  • Publication number: 20100063280
    Abstract: The present invention discloses a novel process to prepare 4-substituted 1-Cyclopropane-sulfonyl-Piperidinyl compounds, which are useful intermediates for the preparation of antagonists of CCR5 receptor and therefore useful for the treatment of HIV virus infected mammals. It specifically discloses a novel process to synthesize 4-[4-[(R)-[1-[cyclopropylsulfonyl)-4-piperidinyl](3-fluorophenyl)methyl]-3(S)-methyl-1-piperazinyl]-1-[(4,6-dimethyl-5-pyrimidinyl)carbonyl]-4-methylpiperidine] compounds.
    Type: Application
    Filed: December 20, 2007
    Publication date: March 11, 2010
    Inventors: John F. Traverse, Shen-Chun Kuo, Feng Liang, William W. Leong
  • Publication number: 20100029939
    Abstract: The present invention discloses a novel process to prepare ketone amides, which are useful intermediates for the preparation of antagonists of CCR5 receptor and therefore useful for the treatment of HIV virus infected mammals. It specifically discloses a novel process to synthesize 1-(2,4-dimethylpyrimidine-5-carbonyl)-4-piperidone, 1-[(2,4-dimethyl-3-pyridinyl)carbonyl]-4-piperidone and related compounds. A salient feature of the invention is the use of a three-phase reaction medium with an organic phase and a buffer salt slurry.
    Type: Application
    Filed: September 22, 2009
    Publication date: February 4, 2010
    Inventors: SHEN-CHUN KUO, David Jieh-Shyh Tsai, Hongbiao Liao
  • Publication number: 20090326241
    Abstract: A process for preparing substituted 5-amino-pyrazolo[4,3-e]-1,2,4-triazolo-[1,5-c]pyrimidine compounds having an aminoalkyl substituent at the 7-position is disclosed, wherein the pyrimidine ring is cyclized using a cyanating agent.
    Type: Application
    Filed: September 2, 2009
    Publication date: December 31, 2009
    Inventors: Shen-Chun Kuo, David Jieh-Shyh Tsai, Loc Thanh Tran, Pengyi Zhang, Andrew D. Jones
  • Patent number: 7601833
    Abstract: A process for preparing substituted 5-amino-pyrazolo[4,3-e]-1,2,4-triazolo-[1,5-c]pyrimidine compounds having an aminoalkyl substituent at the 7-position is disclosed, wherein the pyrimidine ring is cyclized using a cyanating agent.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: October 13, 2009
    Assignee: Schering Corporation
    Inventors: Shen-Chun Kuo, David Jieh-Shyh Tsai, Loc Thanh Tran, Pengyi Zhang, Andrew D. Jones
  • Publication number: 20090131663
    Abstract: A process for preparing substituted 5-amino-pyrazolo[4,3-e]-1,2,4-triazolo-[1,5-c]pyrimidine compounds having an aminoalkyl substituent at the 7-position is disclosed.
    Type: Application
    Filed: January 27, 2009
    Publication date: May 21, 2009
    Inventors: Shen-Chun Kuo, Loc Thanh Tran, Pengyi Zhang
  • Patent number: 7507822
    Abstract: A process for preparing substituted 5-amino-pyrazolo[4,3-e]-1,2,4-triazolo-[1,5-c]pyrimidine compounds having an aminoalkyl substituent at the 7-position is disclosed.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: March 24, 2009
    Assignee: Schering Corporation
    Inventors: Shen-Chun Kuo, Loc Thanh Tran, Pengyi Zhang