Halogenated carboxylic ester derivatives of phenylethyl imidazole, and their method of preparation are disclosed. Radio-halogenated forms of these compounds are ideally suited for positron-imaging of the adrenal glands, as it is known that these compounds demonstrate a selective and high rate of accumulation in the adrenals. The method of preparing these derivatives proceeds by the conversion of a stable, non-radioactive intermediate having trialkylstannyl leaving groups. These intermediates are efficiently converted to the corresponding halogenated forms by substitution of the trialkylstannyl group with the halogen or radiohalogen.
苯乙基
咪唑的卤代
羧酸酯衍
生物及其制备方法已被披露。这些化合物的放射性卤代形式非常适合于肾上腺的正电子成像,因为已知这些化合物在肾上腺中表现出选择性和高速的积累率。制备这些衍
生物的方法通过将具有三烷基
锡离去基团的稳定的非放射性
中间体转化而来。这些
中间体通过用卤素或放射性卤素替换三烷基
锡基团而高效地转化为相应的卤代形式。