Patents Assigned to TEVA Gyógyszergyár Zárkörüen Müködö Részvénytársaság
  • Process for preparing 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-YL)methyl]-4H-carbazol-4-one
    Patent number: 7098345
    Abstract: A process for preparing ondansetron by transamination of an ondansetron structural analog that can be readily prepared conveniently by a Mannich reaction is provided. The process represents an improvement upon known procedures for making ondansetron by transamination because of its rapid rate, selectivity and the ease with which the product can be isolated from the reaction mixture.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: August 29, 2006
    Assignee: TEVA Gyógyszergyár Zárkörüen Müködö Részvénytársaság
    Inventors: Sandor Molnar, Csaba Szabo, Erzsebet Meszaros Sos, Szabolcs Salyi, Tivadar Tamas