Patents by Inventor Francisco Bermejo González

Francisco Bermejo González 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 OBTAINING 6-ALKYLIDENANDROST-1, 4-DIENE-3-ONE
    Publication number: 20110118488
    Abstract: 6-alkylidenandrost-1,4-dien-3-ones of general formula (I), wherein R is H o alkyl; R1 y R2, independently of one another, represent H, OR3, OC(?O)R4 or O-(GPH), wherein R3 is H; C1-C6 alkyl or aryl; R4 is H or C1-C6 alkyl, and GPH is a hydroxyl protecting group; or R1 and R2, together with the carbon atom to which they are bonded, form a carbonyl group or equivalent or a cyclic ketal; can be obtained by a process comprising subjecting the corresponding 6-alkyliden-4-androsten-3-one to a dehydrogenation reaction in the 1,2 position in the presence of a quinone, a silylating agent and a strong acid.
    Type: Application
    Filed: December 12, 2008
    Publication date: May 19, 2011
    Applicant: CRYSTAL PHARMA, S.A.
    Inventors: Francisco Bermejo González, José Andrés Marcos Escribano, Luis Gerardo Gutiérrez Fuentes, Jesús Miguel Iglesias Retuerto, Antonio Lorente Bonde-Larsen