Patents by Inventor Laszlo Terdy

Laszlo Terdy 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 synthesis of high purity D-(17a)-13-ethyl-17-hydroxy-18,19-dinorpregn-4-ene-20-yn-3-one oxime
    Publication number: 20050032763
    Abstract: The invention relates to a process for the synthesis of d-(17?)-13-ethyl-17-hydroxy-18,19-dinorpregn-4-ene-20-yn-3-one-oxime (also known as norelgestromin) via acetylation of d-norgestrel at position 17; oximation of the oxo group at position 3 of the obtained d-(17?)-13-ethyl-17-(acetyloxy)-18,19-dinorpregn-4-ene-20-yn-3-one; and then hydrolyzing the acetyloxy group at position 17 of the obtained d-(17?)-13-ethyl-17-(acetyloxy)-18,19-dinorpregn-4-ene-20-yn-3-oxime derivative, thereby obtaining norelgestromin.
    Type: Application
    Filed: June 30, 2004
    Publication date: February 10, 2005
    Inventors: Zoltan Tuba, Sandor Maho, Janos Kiss, Endrene Magyari, Laszlo Terdy
  • Process for preparing a substituted allylamine derivative and the salts thereof
    Patent number: 6770786
    Abstract: The antifungal agent (E)-N-methyl-N-(1-naphthylmethyl)-6,6-dimethyl-hept-2-ene-4-ynyl-1-amine of formula (I) and acid addition salts thereof are prepared by reacting a chloro-compound of formula (IIIb) with a secondary amine of formula (II) in an aliphatic ketone-type solvent in the presence of a base and optionally iodide salt catalyst, and subsequently treating the resulting reaction mixture directly with aqueous hydrochloric acid to precipitate the hydrochloride of the compound of formula (I). The precipitate is separated, and the base of formula (I) can be liberated from the hydrochloride and can be converted into other pharmaceutically acceptable acid addition salts.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: August 3, 2004
    Assignee: Richter Gedeon Vegyeszeti Gyar Rt.
    Inventors: Peter Bod, Laszlo Terdy, Ferenc Trischler, Eva Fekecs, Maria Demeter, Anna Lauko, Gyorgy Domany, Gyorgyi Szabone Komlosi, Katalin Varga