Patents by Inventor Paul Beckett

Paul Beckett 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).

  • Natural amino acid derivatives as metalloproteinase inhibitors
    Patent number: 5643964
    Abstract: Compounds of Formula (I) wherein R.sub.2 represents a group R.sub.6 --A-- wherein A represents a divalent straight or branched, saturated or unsaturated hydrocarbon chain of up to 6 C atoms which may be interrupted by an O or S atom, and R.sub.6 represents hydrogen or an optionally substituted phenyl, cycloalkyl or cycloalkenyl group; R.sub.3 represents the characterizing side chain of a natural alpha amino acid other than proline, and in which any polar substituents are optionally protected; R.sub.4 represents hydrogen or methyl; R.sub.5 represents hydrogen, C.sub.1 -C.sub.6 alkyl or a group D-(C.sub.1 -C.sub.6 alkyl) wherein D represents hydroxy, (C.sub.1 -C.sub.6)alkoxy, (C.sub.1 -C.sub.6)alkylthio, acylamino, optionally substituted phenyl, or a heterocyclic group, NH.sub.2, or a mono- or di-(C.sub.1 -C.sub.6 alkyl) amine or a heterocyclic group; or R.sub.3 and R.sub.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: July 1, 1997
    Assignee: British Biotech Pharmaceuticals Limited
    Inventors: Jonathan Philip Dickens, Michael John Crimmin, Raymond Paul Beckett