申请人:Emory University
公开号:US05808146A1
公开(公告)日:1998-09-15
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 \x9b.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.
这项发明提供了一种新型氨基酸化合物,可用于检测和评估大脑和身体肿瘤。这些化合物结合了1-氨基环烷基-1-羧酸的有利特性,即它们在肿瘤中的快速摄取和长时间滞留,以及卤素取代物的特性,包括某些有用的卤素同位素,包括氟-18、碘-123、碘-125、碘-131、溴-75、溴-76、溴-77和溴-82。在一个方面,该发明涉及在体内给予受试者时具有高特异性的氨基酸化合物。优选的氨基酸化合物显示至少为5:1的目标与非目标比率,在体内稳定,并在给药后1小时内基本定位到目标位置。一种特别优选的氨基酸化合物是\x9b.sup.18 F!-1-氨基-3-氟环丁烷-1-羧酸(FACBC)。在另一个方面,该发明涉及由α-氨基酸基团连接到四、五或六元碳链环的药物组合物。此外,该发明还涉及α-氨基异丁酸的类似物。