Synthesis and Biological Evaluation of Pyridazinone Analogues as Potential Cardiac Positron Emission Tomography Tracers
作者:Ajay Purohit、Heike Radeke、Michael Azure、Kelley Hanson、Richard Benetti、Fran Su、Padmaja Yalamanchili、Ming Yu、Megan Hayes、Mary Guaraldi、Mikhail Kagan、Simon Robinson、David Casebier
DOI:10.1021/jm701443n
日期:2008.5.1
A series of fluorinated pyridazinone derivatives with IC50 values ranging from 8 to 4000 nM for the mitochondrial complex 1 (MC1) have been prepared. Structure-activity relationship (SAR) assessment indicated preference of the fluorine label to be incorporated on an alkyl side chain rather than directly on the pyridazinone moiety. Tissue distribution studies of a series of analogues ([18F] 22-28) in
制备了一系列线粒体复合物1(MC1)的IC50值为8至4000 nM的氟化哒嗪酮衍生物。结构-活性关系(SAR)评估表明,优先选择将氟标记掺入烷基侧链,而不是直接掺入哒嗪酮部分。在Sprague-Dawley(SD)大鼠中进行的一系列类似物([18F] 22-28)的组织分布研究确定[18F] 27是最有前途的放射性示踪剂,其在心脏组织中的摄取量很高(3.41%ID / g;术后30分钟)注射)以及有利的心脏与非目标器官分布比率。[18F] 27给药后SD大鼠和非人类灵长类动物的MicroPET图像可轻松评估60分钟内的心肌,对肺或肝的干扰最小。