Synthesis, radiolabeling, and evaluation of a potent β-site APP cleaving enzyme (BACE1) inhibitor for PET imaging of BACE1 in vivo
作者:Lili Pan、Qian He、Yi Wu、Ni Zhang、Huawei Cai、Bo Yang、Yuxi Wang、Yunchun Li、Xiaoai Wu
DOI:10.1016/j.bmcl.2022.128543
日期:2022.3
report the synthesis and evaluation of an 18F-labeled 2-amino-3,4-dihydroquinazoline analog as a potential BACE1 radioligand. A fluoropropyl side chain was introduced to the phenyl of this 3,4-dihydroquinazoline scaffold to generate the radioligand. Our preliminary data indicated that although the 2-amino-3,4-dihydroquinazoline scaffold possessed favorable in-vitro properties as a PET ligand, its poor brain
β位APP切割酶1(BACE1)在淀粉样前体蛋白的蛋白水解过程中发挥重要作用,可作为AD诊断和治疗的重要靶点。本研究旨在报告作为潜在 BACE1 放射性配体的18 F 标记的 2-氨基-3,4-二氢喹唑啉类似物的合成和评估。将氟丙基侧链引入该 3,4-二氢喹唑啉支架的苯基以产生放射性配体。我们的初步数据表明,虽然 2-氨基-3,4-二氢喹唑啉支架作为 PET 配体具有良好的体外特性,但其较差的脑吸收阻碍了体内BACE1 的成像。需要进一步研究以优化支架,以开发可渗透血脑屏障的 BACE1 靶向 PET 配体。