Patents by Inventor Peter N. R. Usherwood

Peter N. R. Usherwood 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).

  • Patent number: 5770625
    Abstract: The present invention provides a compound having the structure: ##STR1## wherein R.sub.1 is hydrogen or a branched or unbranched, substituted or unsubstituted aminoalkyl having from two to twenty atoms in the chain, R.sub.2 is hydrogen, methyl, or a branched or unbranched, substituted or unsubstituted alkyl having from two to twenty atoms in the chain; when R.sub.2 is methyl, R.sub.3 is either hydrogen or a substituted or unsubstituted aryl; and R.sub.4 is methyl, a branched or unbranched, substituted or unsubstituted alkyl, alkenyl, alkynyl, alkenynyl, or cycloalkyl having from two to twenty atoms in the chain, or a substituted or unsubstituted aryl group.The invention also concerns a method of preparing the compound from the venom, venom sacs or venom glands of the wasp Philanthus triangulun F. Additionally, the invention provides a method of chemically synthesizing the compound.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: June 23, 1998
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Koji Nakanishi, Amira T. Eldefrawi, Mohyee E. Eldefrawi, Peter N. R. Usherwood
  • Patent number: 5218000
    Abstract: A compound of formula I optionally in the form of an acid addition salt ##STR1## in which formula: A represents a substituent which is: hydroxyl, O-alkyl, O-cycloalkyl, O-alkenyl, O-aryl, O-aralkyl, O-carbamate, O-carbonate, O-acyl or halogena is 0-5;the substituents A are identical or different when a is more than 1;B represents a C.sub.1 -C.sub.6 aliphatic hydrocarbon group optionally carrying one or more of the substituents: hydroxyl, amino, halogen, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, aryloxy or carboalkoxy and optionally comprising one or more sites of unsaturation and/or one or more carbonyl groups or ketal derivatives thereof;b is 0 or 1;c, d, f and h, which may be identical or different, are 2, 3, 4, 5 or 6; andi is 0 or 1D, E and F, which may be identical or different, represent hydrogen or C.sub.1 -C.sub.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: June 8, 1993
    Assignee: National Research Development Corporation
    Inventors: Peter N. R. Usherwood, Barrie W. Bycroft, Ian S. Blagbrough, Alan J. Mather