Patents by Inventor Jolan Cseke

Jolan Cseke 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 preparing N-phenyl-N-methoxyacetyl-DL-alanine methyl ester derivatives
    Patent number: 5639905
    Abstract: Process for the preparation of N-phenyl-N-methoxyacetyl-DL-alanine methyl ester derivatives of the formula (I). ##STR1## wherein R is a C.sub.1-4 alkyl residue; and n is a cardinal number between from 1 to 3,which comprises reacting an N-methoxyacetyl derivative of the formula (II). ##STR2## wherein R and n are as defined above, with a stoichiometric amount of an alkaline metal alkoxide, at a temperature between 80.degree. C. and 150.degree. C., until completion of the removal of the alkanol present in the system, then reacting the thus obtained alkaline metal salt of the compound of formula (II) directly or after isolation with a methyl DL-x-halopropionate.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: June 17, 1997
    Assignee: Nitrokemia Ipartelepek
    Inventors: Lajos Nagy, Jeno Pelyva, Pal Agocs, Csaba Soptei, Judit Benczik nee Pasztor, Zoltan Kolonics, Sandor Balint, Dezso Sebok, Jolan Cseke, Tibor Kranitz, Laszlo Legradi