Patents by Inventor Szigeti Katalin Polikne

Szigeti Katalin Polikne 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).

  • Process for the stereoselective reduction of &agr;,&bgr;-unsaturated ketones
    Patent number: 6482959
    Abstract: A process for the preparation of &agr;,&bgr;-unsaturated alcohols of general formula (I), wherein R means an alkyl group of 1-4 carbon atoms, or benzoyloxy group optionally substituted with a phenyl group; R1 means a hydrogen atom or an alkyl group of 1-4 carbon atoms, R2 means a hydrogen atom or an alkyl group of 1-4 carbon atoms; R3 means an alkyl group of 1-6 carbon atoms optionally substituted by phenyl group or cycloalkyl group of 5-7 carbon atoms; or a phenoxy group optionally substituted by a halogen atom, or a cycloalkyl group of 5-7 carbon atoms; R4 means a hydrogen atom or a halogen atom whereby at &agr;,&bgr;-unsaturated ketones of general formula (II) wherein the meanings of R, R1, R2, R3, and R4 are as given above—is diastereoselectively reduced with a borohydride type compound in an aprotic solvent, in the presence of an inorganic substance dissolublein the reaction mixture and having particle size from 0.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: November 19, 2002
    Assignee: Chinoin Gyógyszer és Vegyészeti Termékek Gyára Rt.
    Inventors: Kardos Zsuzsanna Baloghne, Nandor Benno, Povarny Magdonla Beresne, Gyula Dalmadi, Katalin Ebinger, Laszlo Forro, Geza Galambos, Felix Hajdu, Istvan Hermecz, Geza Lukacs, Karoly Mozsolits, Szigeti Katalin Polikne, Judit Sebestyen, Tobor Szabo, Zoltan Szeverenyi, Ervin Vajda, Gabor Vankai, Pal Vofely