Patents by Inventor Tao Pei

Tao Pei 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).

  • Publication number: 20140200343
    Abstract: The present invention includes compounds useful as intermediates in the preparation of macrolactams, methods for preparing the intermediates, and methods for preparing macrolactams from the intermediates. One use of the methods and intermediates described herein is in the production of macrolactam compounds able to inhibit HCV NS3 protease activity. HCV NS3 inhibitory compounds have therapeutic and research applications.
    Type: Application
    Filed: August 16, 2012
    Publication date: July 17, 2014
    Inventors: Feng Xu, Guy Humphrey, Tao Pei, Zhiguo Jake Song, Tao Wang, Laura Artino
  • Publication number: 20130338141
    Abstract: Compounds of Formula I are inhibitors of HIV integrase and inhibitors of HIV replication: wherein X1, X2, Y, R1A, R1B, R2 and R3 are defined herein. The compounds are useful for the prophylaxis or treatment of infection by HIV and the prophylaxis, treatment, or delay in the onset or progression of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se (or as hydrates or solvates thereof) or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines. Processes for making compounds of Formula I and intermediates thereof are also described.
    Type: Application
    Filed: August 19, 2013
    Publication date: December 19, 2013
    Inventors: Richard C. Isaacs, Wayne J. Thompson, Peter D. Williams, Dai-Shi Su, Shankar Venkatraman, Mark W. Embrey, Thorsten E. Fisher, John S. Wai, David C. Dubost, Richard G. Ball, Eric J. Choi, Tao Pei, Sarah L. Trice, Neil Campbell, Matthew Maddes, Peter E. Maligres, Michael Shevlin, Zhiguo Jake Song, Dietrich P. Steinhuebel, Neil A. Strotman, Jingjun Yin
  • Publication number: 20130253135
    Abstract: The present invention provides poly(amide) polymers, polyconjugates, compositions and methods for the delivery of oligonucleotides for therapeutic purposes.
    Type: Application
    Filed: November 16, 2011
    Publication date: September 26, 2013
    Inventors: Stephanie E. Barrett, Marina Busuek, Steven L. Colletti, Robert M. Garbaccio, Erin N. Guidry, Robert A. Kowtoniuk, Jing Liao, Craig A. Parish, Rubina G. Parmar, Tao Pei, Kevin M. Schlosser, David M. Tellers, Sandra C. Tobias, Quang T. Truong, Jacob H. Waldman, Weimin Wang, J. Michael Williams
  • Patent number: 8513234
    Abstract: Compounds of Formula I are inhibitors of HIV integrase and inhibitors of HIV replication: wherein X1, X2, Y, R1A, R1B, R2 and R3 are defined herein. The compounds are useful for the prophylaxis or treatment of infection by HIV and the prophylaxis, treatment, or delay in the onset or progression of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se (or as hydrates or solvates thereof) or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines. Processes for making compounds of Formula I and intermediates thereof are also described.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: August 20, 2013
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Richard C. A. Isaacs, Wayne J. Thompson, Peter D. Williams, Dai-Shi Su, Shankar Venkatraman, Mark W. Embrey, Thorsten E. Fisher, John S. Wai, David C. Dubost, Richard G. Ball, Eric J. Choi, Tao Pei, Sarah L. Trice, Neil Campbell, Matthew Maddess, Peter E. Maligres, Michael Shevlin, Zhiguo Jake Song, Dietrich P. Steinhuebel, Neil A. Strotman, Jingjun Yin
  • Patent number: 8075937
    Abstract: Alkyldienamides compounds suitable for use as flavoring agents are disclosed. The compounds are used as flavors since they possess umami characteristics or other desirable organoleptic properties. The disclosed compounds are defined by the structure set forth below: wherein R is ethyl or cyclopropyl; and wherein R? is methyl or butyl, with the proviso that when R is ethyl, R? is not methyl.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: December 13, 2011
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark L. Dewis, Michelle E. Huber, Michael V. Cossette, David O. Agyemang, Garry Conklin, Tao Pei
  • Patent number: 8007849
    Abstract: The present invention relates to novel compounds having sweet, salt or umami taste enhancement qualities. These compounds have the structure: where R1 is H or methyl; R2 is selected from the group consisting of H, C1-C4 alkyl, alkenyl; R3 is selected from the group consisting of H, phenyl, C1-C10 straight or branched chain alkyl, alkenyl, alkynyl, alkyldienyl, acyclic or containing no more than one ring, which contains no more than a total of five heteroatoms selected from F, O, S, N, and P; and if R1?H, R2 and R3 taken together can represent cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl, which contains no more than two of each heteroatom selected from N, O, and S; or if R1, R2 and R3 taken together can represent one, or two aromatic rings, which contain no more than three of each heteroatom selected from F, N, S, and O.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: August 30, 2011
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Tao Pei, Mark L. Dewis, Adam Jan Janczuk
  • Patent number: 7794768
    Abstract: Saturated and unsaturated compounds having sweet, salt or umami taste enhancement qualities. The compounds have the structure: wherein R1?H or methyl; R2 is selected from the group consisting of H, C1-C4 alkyl, alkenyl and methylene; R3 is selected from the group consisting of H, C1-C8 straight or branched chain alkyl, alkenyl, dienalkyl and phenyl; or if R1?H, R2 and R3 taken together can represent cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl; R4 is selected from the group consisting of H, methyl and ethyl; R5 is selected from the group consisting of H, methyl and ethyl; R6 is selected from the group consisting of H, C1-C9 straight or branched chain alkyl, alkenyl, alkyldienyl, and acyclic or cyclic containing no more than one ring; with the proviso that in structure 1, when R4 is H or Me and R5?H or methyl, R6 may be selected from the group described above and phenyl.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: September 14, 2010
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark L. Dewis, Garry Conklin, Tao Pei
  • Publication number: 20100087419
    Abstract: Compounds of Formula I are inhibitors of HIV integrase and inhibitors of HIV replication: wherein X1, X2, Y, R1A, R1B, R2 and R3 are defined herein. The compounds are useful for the prophylaxis or treatment of infection by HIV and the prophylaxis, treatment, or delay in the onset or progression of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se (or as hydrates or solvates thereof) or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines. Processes for making compounds of Formula I and intermediates thereof are also described.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 8, 2010
    Inventors: Richard C. A. Isaacs, Wayne J. Thompson, Peter D. Williams, Dai-Shi Su, Shankar Venkatraman, Mark W. Embrey, Thorsten E. Fisher, John S. Wai, David C. Dubost, Richard G. Ball, Eric J. Choi, Tao Pei, Sarah L. Trice, Neil Campbell, Matthew Maddess, Peter E. Maligres, Michael Shevlin, Zhiguo Jake Song, Dietrich P. Steinhuebel, Neil A. Strotman, Jingjun Yin
  • Publication number: 20090311402
    Abstract: Alkyldienamides compounds suitable for use as flavoring agents are disclosed. The compounds are used as flavors since they possess umami characteristics or other desirable organoleptic properties. The disclosed compounds are defined by the structure set forth below: wherein R is ethyl or cyclopropyl; and wherein R? is methyl or butyl, with the proviso that when R is ethyl, R? is not methyl.
    Type: Application
    Filed: August 20, 2009
    Publication date: December 17, 2009
    Inventors: Mark L. Dewis, Michelle E, Huber, Michael V. Cossette, David O. Agyemang, Garry Conklin, Tao Pei
  • Patent number: 7632531
    Abstract: Compounds suitable for use as flavoring agents are disclosed. The compounds are used as flavors since they possess umami characteristics or other desirable organoleptic properties.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: December 15, 2009
    Assignee: International Flavors & Fragnances Inc.
    Inventors: Mark L. Dewis, Michelle E. Huber, Michael V. Cossette, David O. Agyemang, Garry Conklin, Tao Pei
  • Patent number: 7615661
    Abstract: The present invention relates to thioester compounds and the incorporation and use of the new chemical entities as flavor and fragrance chemicals.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: November 10, 2009
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Kathryn Bardsley, David O. Agyemang, Tao Pei
  • Publication number: 20090232747
    Abstract: The present invention relates to thioester compounds and the incorporation and use of the new chemical entities as flavor and fragrance chemicals.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 17, 2009
    Inventors: Kathryn Bardsley, David O. Agyemang, Tao Pei
  • Patent number: 7541055
    Abstract: The present invention is directed to novel compounds and a process for augmenting or imparting a flavor enhancement effect or modifying the perception of one or more of the five basic taste qualities sweet, sour, salt, bitter and umami, to a foodstuff, chewing gum, medicinal product, toothpaste, alcoholic beverage, aqueous beverage, snack, sauce or soup comprising the step of adding to a foodstuff, chewing gum, medicinal product, toothpaste, alcoholic beverage, aqueous beverage, snack, sauce or soup a flavor enhancement or modification of basic taste quality augmenting, enhancing or imparting quantity and concentration of at least one N-substituted unsaturated alkyl amide defined according to the structures:
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: June 2, 2009
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark L. Dewis, Garry Conkiln, Tao Pei, Catherine Marie Smith, Adam Jan Janczuk
  • Publication number: 20080317922
    Abstract: Saturated and unsaturated compounds having sweet, salt or umami taste enhancement qualities. The compounds have the structure: wherein R1?H or methyl; R2 is selected from the group consisting of H, C1-C4 alkyl, alkenyl and methylene; R3 is selected from the group consisting of H, C1-C8 straight or branched chain alkyl, alkenyl, dienalkyl and phenyl; or if R1?H, R2 and R3 taken together can represent cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl; R4 is selected from the group consisting of H, methyl and ethyl; R5 is selected from the group consisting of H, methyl and ethyl; R6 is selected from the group consisting of H, C1-C9 straight or branched chain alkyl, alkenyl, alkyldienyl, and acyclic or cyclic containing no more than one ring; with the proviso that in structure 1, when R4 is H or Me and R5?H or methyl, R6 may be selected from the group described above and phenyl.
    Type: Application
    Filed: August 12, 2008
    Publication date: December 25, 2008
    Inventors: Mark L. Dewis, Garry Conklin, Tao Pei
  • Patent number: 7427421
    Abstract: Saturated and unsaturated compounds having sweet, salt or umami taste enhancement qualities. The compounds have the structure: where R1?H or methyl; R2 is selected from the group consisting of H, C1-C4 alkyl, alkenyl and methylene; R3 is selected from the group consisting of H, C1-C8 straight or branched chain alkyl, alkenyl, dienalkyl or phenyl; or if R1?H, R2 and R3 taken together can represent cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl; R4 is selected from the group consisting of H, methyl and ethyl; R5 is selected from the group consisting of H, methyl and ethyl; R6 is selected from the group consisting of H, C1-C9 straight or branched chain alkyl, alkenyl, alkyldienyl, acyclic or containing no more than one ring; with the proviso that in structure 1 when R4 is H or Me; and R5?H or methyl, R6 may be selected from the group described above or phenyl.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: September 23, 2008
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark L. Dewis, Garry Conklin, Tao Pei
  • Patent number: 7329767
    Abstract: Described are mixtures of at least four of the alkadienamides defined according to the structure: wherein R represents C1-C2 n-alkyl; R1 is 2-methyl-1-propyl and R2 is hydrogen, or R1 and R2 taken together is a moiety having the formula wherein n is 4 or 5, or compositions containing substantial concentrations of such mixtures, prepared according to novel processes: (a) extraction of a ground substantially dried fruit of one of the Piper species, Piper longum Linn or Piper peepuloides; (b) natural product-forming synthesis; or (c) synthetic product-forming synthesis. Also described are uses of the thus-formed products for augmenting, enhancing or imparting an aroma, taste, chemesthetic effect and/or antibacterial effect in or to a consumable material and/or in the oral cavity and/or on the mammalian epidermis.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: February 12, 2008
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark L. Dewis, Thumplasseril V. John, Markus A. Eckert, Jan Herman Colstee, Neil C. Da Costa, Tao Pei
  • Publication number: 20080008809
    Abstract: The use of 1,2-Dihydroperillaldehyde at levels less than 0.15 parts per million is disclosed as a flavor chemical suitable for incorporation in food products and related applications.
    Type: Application
    Filed: July 5, 2006
    Publication date: January 10, 2008
    Inventors: Mark L. Dewis, Tao Pei, Neil C. Da Costa, Debra Merritt, Garry Conklin
  • Publication number: 20070134389
    Abstract: The present invention relates to novel compounds having sweet, salt or umami taste enhancement qualities. These compounds have the structure: where R1 is H or methyl; R2 is selected from the group consisting of H, C1-C4 alkyl, alkenyl; R3 is selected from the group consisting of H, phenyl, C1-C10 straight or branched chain alkyl, alkenyl, alkynyl, alkyldienyl, acyclic or containing no more than one ring, which contains no more than a total of five heteroatoms selected from F, O, S, N, and P; and if R1=H, R2 and R3 taken together can represent cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl, which contains no more than two of each heteroatom selected from N, O, and S; or if R1, R2 and R3 taken together can represent one, or two aromatic rings, which contain no more than three of each heteroatom selected from F, N, S, and O.
    Type: Application
    Filed: December 14, 2005
    Publication date: June 14, 2007
    Inventors: Tao Pei, Mark Dewis, Adam Janczuk
  • Publication number: 20060068071
    Abstract: The present invention is directed to novel compounds and a process for augmenting or imparting a flavor enhancement effect or modifying the perception of one or more of the five basic taste qualities sweet, sour, salt, bitter and umami, to a foodstuff, chewing gum, medicinal product, toothpaste, alcoholic beverage, aqueous beverage, snack, sauce or soup comprising the step of adding to a foodstuff, chewing gum, medicinal product, toothpaste, alcoholic beverage, aqueous beverage, snack, sauce or soup a flavor enhancement or modification of basic taste quality augmenting, enhancing or imparting quantity and concentration of at least one N-substituted unsaturated alkyl amide defined according to the structures:
    Type: Application
    Filed: July 8, 2005
    Publication date: March 30, 2006
    Inventors: Mark Dewis, Garry Conkiln, Tao Pei, Catherine Smith, Adam Janczuk
  • Publication number: 20060057268
    Abstract: Saturated and unsaturated compounds having sweet, salt or umami taste enhancement qualities. The compounds have the structure: where R1?H or methyl; R2 is selected from the group consisting of H, C1-C4 alkyl, alkenyl and methylene; R3 is selected from the group consisting of H, C1-C8 straight or branched chain alkyl, alkenyl, dienalkyl or phenyl; or if R1?H, R2 and R3 taken together can represent cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl; R4 is selected from the group consisting of H, methyl and ethyl; R5 is selected from the group consisting of H, methyl and ethyl; R6 is selected from the group consisting of H, C1-C9 straight or branched chain alkyl, alkenyl, alkyldienyl, acyclic or containing no more than one ring; with the proviso that in structure 1 when R4 is H or Me; and R5?H or methyl, R6 may be selected from the group described above or phenyl.
    Type: Application
    Filed: September 10, 2004
    Publication date: March 16, 2006
    Inventors: Mark Dewis, Garry Conklin, Tao Pei