Synthesis and Preclinical Evaluation of Three Novel Fluorine-18 Labeled Radiopharmaceuticals for P-Glycoprotein PET Imaging at the Blood–Brain Barrier
作者:Heli Savolainen、Mariangela Cantore、Nicola A. Colabufo、Philip H. Elsinga、Albert D. Windhorst、Gert Luurtsema
DOI:10.1021/mp5008103
日期:2015.7.6
function, many positron emission tomography (PET) radiopharmaceuticals have been developed. Most P-gp radiopharmaceuticals are labeled with carbon-11, while labeling with fluorine-18 would increase their applicability due to longer half-life. Here we present the synthesis and in vivo evaluation of three novel fluorine-18 labeled radiopharmaceuticals: 4-((6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-y
P-糖蛋白(P-gp)以及血脑屏障(BBB)上的其他转运蛋白限制了许多药物进入大脑。在几种神经系统疾病中发现了P-gp功能的改变。为了研究P-gp功能,已经开发了许多正电子发射断层扫描(PET)放射性药物。大多数P-gp放射性药物都用碳11标记,而氟18标记则由于更长的半衰期而增加了其适用性。在这里,我们介绍三种新型氟18标记的放射性药物的合成和体内评价:4-((6,7-二甲氧基-3,4-二氢异喹啉-2(1 H)-基)甲基)-2-(4-氟苯基)恶唑(1a),2-联苯基-4-基-2-氟乙氧基-6,7-二甲氧基-1,2,3,4-四氢-异喹啉(2)和5-(1-(2-氟乙氧基))-[3-(6,7-二甲氧基-3,4-二氢-1 H-异喹啉-2-基)-丙基] -5,6,7 ,8-四氢萘(3)。该化合物在体外被表征为P-gp底物,并使用Mdr1a / b (-/-) Bcrp1 (-/-)和野生型小鼠来评估体内底物的潜力。与(R)-[