New PET Imaging Agent for the Serotonin Transporter: [<sup>18</sup>F]ACF (2-[(2-Amino-4-chloro-5-fluorophenyl)thio]-<i>N,N</i>-dimethyl-benzenmethanamine)
作者:Shunichi Oya、Seok Rye Choi、Heinz Coenen、Hank F. Kung
DOI:10.1021/jm020167y
日期:2002.10.1
excellent binding affinity and selectivity for SERT (K(i) = 0.05, 3020, and 650 nM for SERT, DAT, and NET, respectively). For preparation of the [(18)F]ACF, the NH(2) group of the initially coupled adduct was converted to the trimethylammonium salt, which was replaced by [(18)F]fluoride in the presence of Kryptofix 222 and potassium carbonate. The final product, [(18)F]ACF, was obtained after a borane and
描述了一种新的F-18标记的苯硫基苯基衍生物,其通过正电子发射断层扫描(PET)对大脑中的血清素转运蛋白(SERT)成像具有特异性。氟化苯硫基苯基衍生物,ACF,2-[((2-氨基-4-氯-5-氟苯基)硫基] -N,N-二甲基-苯甲亚胺,是通过首先将2,5-二氯-4-硝基苯胺与2-巯基-N,N-二甲基苯甲酰胺。通过Schiemann反应将偶联的加合物的氨基转化为氟基。随后,通过BH(3)-四氢呋喃一锅还原硝基和酰胺基,得到非放射性ACF(收率25%)。使用表达SERT,多巴胺转运蛋白(DAT)或去甲肾上腺素转运蛋白(NET)的LLC细胞的细胞膜匀浆进行的体外结合测定显示出优异的结合亲和力和对SERT的选择性(K(i)= 0.05、3020,对于SERT,DAT和NET,分别为650 nM)。为了制备[(18)F] ACF,将最初偶联的加合物的NH(2)基团转化为三甲基铵盐,在存在Kryptofix