Patents by Inventor Clara Schoenberger

Clara Schoenberger 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).

  • Preparation of 1'-ethoxycarbonyl-oxyethyl esters of penicillins
    Patent number: 4889929
    Abstract: Process for the preparation of 1'-ethoxy carbonyloxy ethyl esters of penicillins, wherein a compound of the formula ##STR1## in which A is phenyl, phenoxy or 4-hydroxyphenyl, B is hydrogen, an amino group or a protected amino group and Z is hydrogen or a cation selected from the group of alkali metal, tri (lower alkyl ) ammonium and tetra (lower alkyl) ammonium, is reacted with 1-bromoethyl ethyl carbonate in an organic solvent and when B is a protected amino group the protecting group is split off to yield a primary amino group.There are also provided novel compounds of the formula ##STR2## in which Ph is phenyl and R is CH.sub.3 -- or C.sub.2 H.sub.5 --.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: December 26, 1989
    Assignee: Astra Lakemedel Aktiebolag
    Inventors: Jacob Vaya, David Ladkani, Clara Schoenberger, Joseph Kaspi, Gad Salemnick, Haim Yellin, Stephan Cherkez