Metabolic stability of 6,7-dialkoxy-4-(2-, 3- and 4-[18F]fluoroanilino)quinazolines, potential EGFR imaging probes
作者:Neil Vasdev、Peter N. Dorff、James P. O’Neil、Frederick T. Chin、Stephen Hanrahan、Henry F. VanBrocklin
DOI:10.1016/j.bmc.2011.03.032
日期:2011.5
Epidermal growth factor receptors (EGFR), upregulated in many tumor types, have been a target for therapeutic development and molecular imaging. The objective of this study was to evaluate the distribution and metabolic characteristics of fluorine-18 labeled anilinoquinazolines as potential imaging agents for EGFR tyrosine kinase expression. Fluorine-18 labeled fluoronitrobenzenes were prepared by
表皮生长因子受体 (EGFR) 在许多肿瘤类型中上调,已成为治疗开发和分子成像的目标。本研究的目的是评估氟 18 标记的苯胺基喹唑啉作为 EGFR 酪氨酸激酶表达的潜在显像剂的分布和代谢特征。氟-18 标记的氟硝基苯是通过穴状和 [ 18 F] 氟化钾与 1,2- 和 1,4- 二硝基苯以及 3-硝基-N , N , N-三甲基苯胺三氟甲磺酸盐在 5 分钟内反应制备的。[ 18 F] 氟化物掺入硝基芳族化合物的衰变校正放射化学产率为81 ± 2%、44 ± 4% 和 77 ± 5% ( n = 3–5) 分别表示 2-、3- 和 4- 氟异构体。硼氢化钠还原为相应的 [ 18 F] 氟苯胺,5 分钟内转化率超过 80%。[偶联18 F]氟苯胺-盐酸盐向6,7-二甲氧基-4-氯喹唑啉,得到相应的6,7-二甲氧基-4-(2-,3-和4- [ 18 F]氟苯胺基)喹唑啉在31 ± 5%、17 ±