Synthesis and preliminary biological characterization of a new potential 125I-Radioligand for dopamine and serotonin receptors
作者:Antonio Guarna、Gloria Menchi、Giovanna Berti、Nicoletta Cini、Anna Bottoncetti、Silvia Raspanti、Alessandro Politi、Alberto Pupi
DOI:10.1016/s0968-0896(01)00229-2
日期:2001.12
value of first pass cerebral extraction (E) of ca. 50% when the regional cerebral blood flow, measured with microsphere technique, is in the experimental animal's physiologic range (0.8-1 mL/min/g). A preliminary in vitro autoradiographic distribution on coronal rat brain slices of the radioiodinated molecule showed that it was preferentially localized in the striatum and in the cerebral regions rich in
描述了具有5-羟色胺(5-HT(2))和多巴胺(D(2))受体亲和力的新型N-苄基氨基醇的合成及其初步生物学特性。用新分子和(3)H-哌隆对大鼠纹状体和额叶皮层的粗制膜进行了体外竞争结合研究。其中一种化合物3-苄基氨基-1-(4-氟-2-碘苯基)-丙-1-醇(6f),对于D(2)和5而言,其IC(50)值均在微摩尔范围内。 -HT(2)受体通过亲核取代3-苄基氨基-1-(2-溴-4-氟苯基)-丙烷-1-醇(6d)的溴原子制备成碘125标记形式(6i) 。在对大鼠进行的体内研究中,放射性标记的分子6i表现出良好的穿越血脑屏障(BBB)的能力,其首过一次大脑提取(E)的平均值约为ca。用微球技术测量的局部脑血流量在实验动物的生理范围内(0.8-1 mL / min / g)为50%。放射性碘标记分子在冠状大鼠脑片上的初步体外放射自显影分布表明,即使观察到很高的非特异性结合,它也优先位于纹状体以