Patents by Inventor Frantz J. Lund

Frantz J. Lund 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).

  • Aryloxymethylcarbonochloridate ester intermediates for use in synthesizing pro drugs and their use therefor
    Patent number: 5401868
    Abstract: The present invention relates to hitherto unknown intermediate of formula, in which R.sub.1 stands for hydrogen or a straight or branched aliphatic C.sub.1 -C.sub.20 carbon chain or an aryl or aralkyl group, aryl and "ar" meaning an aromatic or heterocyclic, 5- or 6-membered ring substituent containing 1 or 2 hetero atoms selected among O, S and N, R.sup.1 optionally being further substituted, and its chain being interrupted by hetero atoms like oxygen, or by carbonyl group(s); and R.sup.3 stands for hydrogen or C.sub.1 -C.sub.3 alkyl. The present intermediates can be used in a one step method for producing prodrugs of formula, where D-H =drug itself.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: March 28, 1995
    Assignee: Leo Pharmaceutical Products Ltd. A/S (Lovens Kemiske Fabrik Productionsaktieselskab)
    Inventor: Frantz J. Lund