Details for Patent: 5,808,146

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Summary for Patent: 5,808,146

Title:	Amino acid analogs for tumor imaging
Abstract:	The invention provides novel amino acid compounds of use in detecting and evaluating brain and body tumors. These compounds combine the advantageous properties of 1-amino-cycloalkyl-1-carboxylic acids, namely, their rapid uptake and prolonged retention in tumors with the properties of halogen substituents, including certain useful halogen isotopes including fluorine-18, iodine-123, iodine-125, iodine-131, bromine-75, bromine-76, bromine-77 and bromine-82. In one aspect, the invention features amino acid compounds that have a high specificity for target sites when administered to a subject in vivo. Preferred amino acid compounds show a target to non-target ratio of at least 5:1, are stable in vivo and substantially localized to target within 1 hour after administration. An especially preferred amino acid compound is [.sup.18 F]-1-amino-3-fluorocyclobutane-1-carboxylic acid (FACBC). In another aspect, the invention features pharmaceutical compositions comprised of an .alpha.-amino acid moiety attached to either a four, five, or a six member carbon-chain ring. In addition, the invention features analogs of .alpha.-aminoisobutyric acid.
Inventor(s):	Goodman; Mark M. (Atlanta, GA), Shoup; Timothy (Decatur, GA)
Assignee:	Emory University (Atlanta, GA)
Application Number:	08/554,906
Patent Claim Types: see list of patent claims	Compound;

Drugs Protected by US Patent 5,808,146

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