作者:Emmanuelle Briard、Bettina Rudolph、Sandrine Desrayaud、Joel A. Krauser、Yves P. Auberson
DOI:10.1002/cmdc.201500115
日期:2015.6
could have been introduced in BAF312 without modifying its structure, they do not have decay kinetics compatible with the time required for observing the drug′s organ distribution in patients. In contrast, the SPECT radioisotope 123I has a longer half‐life and would suit this purpose. Herein we report the identification of an iodinated derivative of BAF312, (E)‐1‐(4‐(1‐(((4‐cyclohexyl‐3‐iodobenzyl)ox
BAF312(siponimod)是一种鞘氨醇-1-磷酸(S1P)受体调节剂,在临床开发中用于治疗多发性硬化症,比其前体FTY720(芬戈莫德)具有更快的器官/组织分布和清除动力学。我们的目标是开发一种示踪剂,以更好地量化BAF312在人脑中的渗透,并有可能被标记为正电子发射断层扫描(PET)或单光子发射计算机断层扫描(SPECT)。尽管可以在不更改其结构的情况下将PET放射性同位素11 C和18 F引入BAF312中,但是它们的衰变动力学与观察患者体内器官分布所需的时间不兼容。相比之下,SPECT放射性同位素123我的半衰期更长,适合这个目的。在此我们报告了BAF312碘化衍生物的鉴定,(E)-1-(4-(1-((((4-环己基-3-碘代苄基氧基)亚氨基)乙基)-2-乙基苄基)氮杂环丁烷-3-羧酸(18,MS565),作为SPECT示踪剂候选物,具有与原始分子相似的亲和力,S1P受体选择