The present disclosure provides a positron emission tomography (PET)-detectable 1-((2-fluoro-6-[18F]fluorophenyl)sulfonyl)-4-((4-methoxyphenyl)sulfonyl)piperazine ([18F]DASA-23) probe that can selectively bind to the pyruvate kinase variant M2 (PKM2) found in cancer cells, such as of human glioma. Given the importance of PKM2 in the regulation of tumor metabolism, there is an on-going need to non-invasively measure its expression through the development of PKM2-specific radiopharmaceuticals. Precursors useful for the synthesis of the radiolabeled [18F]DASA-23-PKM2-specific probe and related compounds, and their methods of synthesis, are provided. Since the half-life of the 18F isotope is approximately 110 min, it is advantageous for a practitioner to attach the radionuclide to the precursor shortly before administration. Therefore, a precursor compound suitable for receiving the radionuclide and capable of specifically binding to the PKM2 variant can be provided.
本公开提供了一种正电子发射断层扫描(PET)可检测的1-((2-
氟-6-[18F]
氟苯基)磺酰基)-4-((4-
甲氧基苯基)磺酰基)
哌嗪([18F]
DASA-23)探针,该探针可选择性地与癌细胞(如人类胶质瘤)中的
丙酮酸激酶变体M2(PKM2)结合。鉴于 PKM2 在调节肿瘤代谢中的重要性,目前需要通过开发 PKM2 特异性放射性药物来非侵入性地测量其表达。本文提供了用于合成放射性标记的[18F]
DASA-23-PKM2 特异性探针和相关化合物的前体及其合成方法。由于 18F 同位素的半衰期约为 110 分钟,因此对于医生来说,在给药前不久将放射性核素附着在前体上是非常有利的。因此,可以提供一种适合接受放射性核素并能与 PKM2 变异体特异性结合的前体化合物。