Patents by Inventor Zrinka Ivezić

Zrinka Ivezić 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).

  • Hydroxy and polyhydroxy derivatives of coumarin, preparation thereof and antiviral action thereof
    Patent number: 6291518
    Abstract: The present invention relates to novel hydroxy and polyhydroxy derivatives of coumarin fused with dialdehydes and aldehyde acids of the general formulae I, II, III and IV: wherein R1=R2=4-hydroxycoumarin; R1=R2=4,7-dihydroxycoumarin; R1=R2=4,5,7-trihydroxycoumarin; R1=4-hydroxycoumarin, R2=—CH(OH)CH3. An object of the invention are also processes for the preparation of hydroxy and polyhydroxy derivatives of coumarin fused with dialdehydes and aldehyde acids, and the antiviral action thereof. Novel hydroxy and polyhydroxy derivatives of coumarin according to the present invention exhibit antiviral action against HIV-1 virus.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: September 18, 2001
    Assignee: Pliva farmaceutska, kemijska, prehrambena i kozmeticka industrija, dionicko drustvo
    Inventors: Mladen Trkovnik, Zrinka Ivezić