Patents by Inventor Zsuzsa Somfai

Zsuzsa Somfai 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).

  • Bis-indole derivatives and pharmaceutical compositions containing them
    Patent number: 4757077
    Abstract: The invention relates to novel bis-indole derivatives of the general formula (I) ##STR1## wherein R.sub.1 stands for a hydrogen atom or an acetyl group;R.sub.2 stands for a hydrogen atom;R.sub.3 means an ethyl group of .alpha.-position; orR.sub.2 and R.sub.3 together represent an oxygen bridge;R.sub.4 represents an ethyl or hydroxyl group of .beta.-position; andR.sub.5 stands for a hydrogen atom or a hydroxyl group;A represents a C.sub.1-10 straight-chain or C.sub.3-10 branched-chain alkyl group, hydroxy-alkyl, acetyl-alkyl, benzyl, C.sub.3-6 alkenyl or alkynyl or C.sub.5-7 cycloalkyl group or an aromatic group or a heteroaromatic group containing one nitrogen or one oxygen atom, andX stands for oxygen or sulphur atom,as well as their acid addition salts and pharmaceutical preparations containing these compounds.Further on, the invention relates to a process for preparing these compounds and preparations.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: July 12, 1988
    Assignee: Richter Gedeon Vegyeszeti Gyar R.T.
    Inventors: Csaba Szantay, Lajos Szabo, Katalin Honty, Tibor Keve, Tibor Acs, Sandor Eckhardt, Janos Sugar, Zsuzsa Somfai, Eva Ivan, Zsuzsa Kneffel
  • Nitro derivatives of vinblastine-type bisindoles, and pharmaceutical compositions containing them
    Patent number: 4746665
    Abstract: The invention relates to novel nitro derivatives of the general formula (I) ##STR1## wherein R.sub.1 stands for a methyl or a formyl group;R.sub.2 stands for a hydroxy or ethyl group of .beta.-position;R.sub.3 means an ethyl group of .alpha.-position;R.sub.4 represents a hydrogen atom; orR.sub.3 and R.sub.4 together represent an oxygen bridge or a double bond;R.sub.5, R.sub.6 and R.sub.7 stand for a nitro group or hydrogen atom, with the proviso that simultaneously only one of them may stand for hydrogen atom; andY stands for --N.dbd. when R.sub.5 stands for a nitro group; whereasY stands for --NH-- when R.sub.5 stands for a hydrogen atom and a valence bond exists between the C.sub.2, and C.sub.7, atoms,as well as their acid addition salts and pharmaceutical preparations containing these compounds.Further on, the invention relates to a process for preparing these compounds and preparations.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: May 24, 1988
    Assignee: Richter Gedeon Vegyeszeti Gyar
    Inventors: Csaba Szantay, Lajos Szabo, Katalin Honty, Tibor Keve, Tibor cs, Sandor Eckhardt, Janos Sugar, Zsuzsa Somfai, Eva Ivan, Zsuzsa Kneffel