The present invention relates to compositions and methods for preparing radiopharmaceutical compounds in high chemical-purity and isotopic-purity. The present invention provides polymer-bound precursors to radiopharmaceutical compounds that can be converted to radiopharmaceutical compounds in one step. In a preferred embodiment, a radiopharmaceutical precursor is bound to a polymeric support via a prosthetic group comprising an alkenyl-tin bond. The radiopharmaceutical precursor is converted to a radiopharmaceutical compound in one step involving cleavage of the alkenyl-tin bond and incorporation of a radioisotope to form the radiopharmaceutical compound. Importantly, the polymeric support containing the toxic tin by-product can be easily removed from the radiopharmaceutical compound by filtration. The present invention can be used to install a large number of different radioisotopes. In a preferred embodiment, the radioisotope is
211
At,
123
I or
131
I.
本发明涉及制备高纯度
化学和同位素纯度的放射性药物化合物的组合物和方法。本发明提供了聚合物结合的放射性药物化合物前体,可以在一步中转化为放射性药物化合物。在一个优选实施例中,通过含有烯基
锡键的假体基团将放射性药物前体结合到聚合物支持上。放射性药物前体通过断裂烯基
锡键并结合放射性同位素一步转化为放射性药物化合物。重要的是,含有有毒
锡副产物的聚合物支持可以通过过滤轻松地从放射性药物化合物中去除。本发明可用于安装大量不同的放射性同位素。在一个优选实施例中,放射性同位素为211At、123I或131I。