It is intended to provide a novel amino acid organic compound which can be used as a labeling precursor compound for radioactive halogen-labeled amino acid compounds including [18F]FACBC, and which prevents methanol from remaining in the radioactive halogen-labeled amino acid compounds produced therefrom. The novel amino acid organic compound is a compound represented by the following formula:
wherein n is an integer of 0 or of 1 to 4; R1 is an ethyl, 1-propyl or isopropyl substituent; X is a halogen substituent or a group represented by —OR2; R2 is a straight-chain or branched-chain haloalkylsulfonic acid substituent with one to 10 carbon atoms, trialkylstannyl substituent with 3 to 12 carbon atoms, fluorosulfonic acid substituent or aromatic sulfonic acid substituent; and R3 is a protective group.
本发明旨在提供一种新型
氨基酸有机化合物,该化合物可用作放射性卤素标记
氨基酸化合物(包括[18F]FACBC)的标记前体化合物,并可防止
甲醇残留在由此制得的放射性卤素标记
氨基酸化合物中。新型
氨基酸有机化合物是由下式表示的化合物:
其中 n 是 0 或 1 至 4 的整数;R1 是乙基、1-丙基或异丙基取代基;X 是卤素取代基或由 -OR2 表示的基团;R2 是具有 1 至 10 个碳原子的直链或支链卤代烷基
磺酸取代基、具有 3 至 12 个碳原子的三烷基
锡取代基、
氟磺酸取代基或芳族
磺酸取代基;以及 R3 是保护基。