Disclosed are PARP-1 inhibitors, which can be 18 F-labeled for use as tracers in positron emission tomographic (PET) imaging. Further disclosed are methods of synthesis. Of the compounds synthesized, 2-[p-(2-Fluoroethoxy)phenyl]-1.3.10-triazatricyclo[6.4.1.04,13]trideca-2,4(13),5,7-tetraen-9-one (12) had the highest inhibition potency for PARP-1 (IC50= 6.3 nM). Synthesis of [18F]-12 is disclosed under conventional conditions in high specific activity with 40-50% decay-corrected yield. MicroPET imaging using [18F]-12 in MDA-MB-436 tumor-bearing mice demonstrated accumulation of [18F]-12 in a tumor. Binding can be blocked by olaparib. The compounds have utility for tumor imaging.
本发明涉及PARP-1
抑制剂,可用于正电子发射断层扫描(PET)成像中作为示踪剂,并公开了合成方法。在所合成的化合物中,2-[p-(2-
氟乙氧基)苯基]-1.3.10-三氮杂环[6.4.1.04,13]
十三烷-2,4(13),5,7-四烯-9-酮(12)对PARP-1具有最高的抑制效力(IC50= 6.3 nM)。[18F]-12的合成在常规条件下公开,具有高比活度,衰变校正收率为40-50%。在
MDA-MB-436肿瘤携带小鼠中使用[18F]-12进行微PET成像,显示[18F]-12在肿瘤中的积累。结合可以被
奥拉帕尼(olaPARib)阻断。这些化合物在肿瘤成像方面具有实用性。