High specific activity tritium-labeled N-(2-methoxybenzyl)-2,5-dimethoxy-4-iodophenethylamine (INBMeO): A high-affinity 5-HT2A receptor-selective agonist radioligand
作者:David E. Nichols、Stewart P. Frescas、Benjamin R. Chemel、Kenneth S. Rehder、Desong Zhong、Anita H. Lewin
DOI:10.1016/j.bmc.2008.04.050
日期:2008.6
carrier added tritiated iodomethane in DMF with K(2)CO(3). Removal of the t-BOC protecting group and purification by HPLC afforded an overall yield of 43%, with a radiochemical purity of 99% and specific activity of 164Ci/mmol. The new radioligand was suitable for labeling human 5-HT(2A) receptors in two heterologous cell lines and had about 20-fold higher affinity than [(3)H]ketanserin.
标题化合物 ([3H]INBMeO) 是通过 t-BOC 保护的二酚前体的 O,O-二甲基化反应制备的,不使用载体在 DMF 中添加氚化碘甲烷和 K(2)CO(3)。去除t-BOC保护基并通过HPLC纯化,总产率为43%,放射化学纯度为99%,比活为164Ci/mmol。新的放射性配体适用于标记两个异源细胞系中的人类 5-HT(2A) 受体,并且具有比 [(3)H] ketanserin 高约 20 倍的亲和力。