Patents by Inventor Pal Berzsenyi

Pal Berzsenyi 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).

  • 5H-2,3-benzodiazepine derivatives and pharmaceutical compositions containing the same
    Patent number: 4614740
    Abstract: The invention relates to new 5H-2,3-benzodiazepine derivatives and a process for the preparation thereof, furthermore to pharmaceutical compositions containing the same.The new 5H-2,3-benzodiazepine derivatives of the invention possess valuable central nervous effect and in particular exert antiaggressive, anxiolytic, narcosis potentiating and soporific properties.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: September 30, 1986
    Assignee: Egis Gyogyszergyar
    Inventors: Tibor Lang, Jeno Korosi, Ferenc Andrasi, Peter Botka, Tamas Hamori, Pal Berzsenyi, Katalin Goldschmidt, Gabor Zolyomi, Istvan Elekes, Zsuzsanna Lang nee Rihmer
  • 1,4;3,6-Dianhydro-2,5-diazido-2,5-dideoxy-hexitols
    Patent number: 4332818
    Abstract: The invention relates to new stereoisomeric 1,4;3,6-dianhydro-2,5-diazido-2,5-dideoxy-hexitols of the Formula I.These compounds can be prepared by(a) reacting a hexitol derivative of the general Formula II /wherein R is a mesyl or tosyl group/ in an aqueous or anhydrous organic solvent with an alkali metal azide or ammonium azide; or(b) mesylating or tosylating a compound of the Formula III and treating the mixed ester of the general Formula IV thus obtained /wherein R is as stated above/ with a base; or(c) subjecting a compound of the Formula III to debenzoylation and subsequently to partial esterification and treating the compound of the general Formula V thus obtained /wherein R is as stated above/ with a base.The new compounds of the Formula I possess valuable hypnotic properties and can be used in therapy.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: June 1, 1982
    Assignee: Egyt Gyogyszervegyeszeti Gyar
    Inventors: Janos Kuszmann, Gabor Medgyes, Ferenc Andrasy, Pal Berzsenyi
  • Anorexigenic 4-[(3,4-dialkoxyphenyl)alkyl]-2-imidazolidinone derivatives
    Patent number: 4308278
    Abstract: 4-[(3,4-Dialkoxyphenyl)alkyl]-2-imidazolidinone derivatives having the formula I ##STR1## wherein R.sup.1 stands for a cycloalkyl group containing from 3 to 6 carbon atoms or benzyl group;R.sup.2 stands for hydrogen atom or an alkyl group containing from 1 to 4 carbon atoms;R.sup.3 stands for hydrogen atom or an alkyl group containing from 1 to 4 carbon atoms;R.sup.4 stands for hydrogen atom, or an alkyl group containing from 1 to 4 carbon atoms or an alkoxycarbonyl group containing from 1 to 4 carbon atoms; andR.sup.5 stands for hydrogen atom or an alkoxycarbonyl group containing from 1 to 4 carbon atoms,are prepared by(a) reducing a hydantoin derivative having the general formula II, wherein R.sup.1 and R.sup.2 are as defined above, with lithium aluminum hydride in a neutral organic solvent, or(b) hydrogenating catalytically an 1,3-dihydro-2H-imidazol-2-one derivative having the general formula III, wherein R.sup.1 and R.sup.3 are as defined above, while the meaning of R.sup.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: December 29, 1981
    Assignee: Gyogyszerkutato Intezet
    Inventors: Geza Schneider, Ferenc Andrasi, Pal Berzsenyi, Arpad Lazar, Sandor Elek, Istvan Elekes, Istvan Polgari