Patents by Inventor Tatiana Sergeeva

Tatiana Sergeeva 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).

  • SELECTIVE OXIDATION OF TRITERPENES EMPLOYING TEMPO
    Publication number: 20090076290
    Abstract: The present invention provides a process of preparing betulin-28-aldehyde from betulin. The process includes contacting betulin with a compound of formula (I), e.g., TEMPO (2,2,6,6-tetramethylpiperidine 1-oxyl) for a period of time effective to provide betulin-28-aldehyde. The present invention also provides a process of preparing betulinic acid. The process includes contacting betulin with a composition that includes: sodium hypochlorite (NaOCl); sodium chlorite (NaClO2), potassium chlorite (KClO2), or a combination thereof; and a compound of formula (I), e.g., TEMPO (2,2,6,6-tetramethylpiperidine 1-oxyl); for a period of time effective to provide betulinic acid.
    Type: Application
    Filed: March 29, 2006
    Publication date: March 19, 2009
    Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA
    Inventors: Pavel A. Krasutsky, Alexei Pushechnikov, Tatiana Sergeeva
  • Triterpene quaternary salts as biologically active surfactants
    Patent number: 7410958
    Abstract: The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. The compounds have antibacterial, antifungal, and surfactant properties.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: August 12, 2008
    Assignee: Regents of the University of Minnesota
    Inventors: Pavel A. Krasutsky, Dmytro Avilov, Tatiana Sergeeva, Dmytro A. Krasutskyy, Oksana Kolomitsyna
  • TRITERPENE QUATERNARY SALTS AS BIOLOGICALLY ACTIVE SURFACTANTS
    Publication number: 20070259842
    Abstract: The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. The compounds have antibacterial, antifungal, and surfactant properties.
    Type: Application
    Filed: June 19, 2007
    Publication date: November 8, 2007
    Inventors: Pavel Krasutsky, Dmytro Avilov, Tatiana Sergeeva, Dmytre Krasutskyy, Oksana Kolomitsyna
  • TRITERPENE QUATERNARY SALTS AS BIOLOGICALLY ACTIVE SURFACTANTS
    Publication number: 20070259839
    Abstract: The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. The compounds have antibacterial, antifungal, and surfactant properties.
    Type: Application
    Filed: June 19, 2007
    Publication date: November 8, 2007
    Inventors: Pavel Krasutsky, Dmytro Avilov, Tatiana Sergeeva, Dmytro Krasutskyy, Oksana Kolomitsyna
  • TRITERPENE QUATERNARY SALTS AS BIOLOGICALLY ACTIVE SURFACTANTS
    Publication number: 20070244081
    Abstract: The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. The compounds have antibacterial, antifungal, and surfactant properties.
    Type: Application
    Filed: June 8, 2007
    Publication date: October 18, 2007
    Inventors: Pavel Krasutsky, Dmytro Avilov, Tatiana Sergeeva, Dmytro Krasutskyy, Oksana Kolomitsyna
  • TRITERPENE QUATERNARY SALTS AS BIOLOGICALLY ACTIVE SURFACTANTS
    Publication number: 20070088009
    Abstract: The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. The compounds have antibacterial, antifungal, and surfactant properties.
    Type: Application
    Filed: December 18, 2006
    Publication date: April 19, 2007
    Inventors: Pavel Krasutsky, Dmytro Avilov, Tatiana Sergeeva, Dmytro Krasutskyy, Oksana Kolomitsvna
  • Triterpene quaternary salts as biologically active surfactants
    Patent number: 7199114
    Abstract: The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. The compounds have antibacterial, antifungal, and surfactant properties.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: April 3, 2007
    Assignee: The Regents of the University of Minnesota
    Inventors: Pavel A. Krasutsky, Dmytro Avilov, Tatiana Sergeeva, Dmytro A. Krasutskyy, Oksana Kolomitsyna
  • Method for incorporation of pentafluorosulfanyl (SF5) substituents into aliphatic and aromatic compounds
    Patent number: 6919484
    Abstract: The subject invention provides convenient, regiospecific and highly stereoselective addition of SF5Cl in high yield to a variety of alkenes and alkynes.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: July 19, 2005
    Assignee: University of Florida
    Inventors: William R. Dolbier, Jr., Samia Aït-Mohand, Tatiana Sergeeva
  • Triterpene quaternary salts as biologically active surfactants
    Publication number: 20050059642
    Abstract: The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. The compounds have antibacterial, antifungal, and surfactant properties.
    Type: Application
    Filed: July 16, 2004
    Publication date: March 17, 2005
    Inventors: Pavel Krasutsky, Dmytro Avilov, Tatiana Sergeeva, Dmytro Krasutskyy, Oksana Kolomitsyna