作者:Richard M. Carr、Derek R. Sutherland
DOI:10.1002/jlcr.2580341009
日期:1994.10
3-lodoquinolones were prepared from the corresponding quinolone-3-carboxylic acids by Hunsdiecker-type iododecarboxylation reactions with lead tetraacetate and iodine. Cyanation of the iodo compounds with mixtures of potassium [13C]cyanide and copper (I) iodide, gave [3-13C]cyanoquinolones which on acidic hydrolysis afforded quinolone-[3-13C]carboxylic acids. In this way, nalidixic acid, an immediate
通过与四乙酸铅和碘的Hunsdiecker型碘脱羧反应,从相应的喹诺酮-3-羧酸制备3-碘喹诺酮。用[13C]氰化钾和碘化铜(I)的混合物使碘化合物氰化,得到[3-13C]氰基喹诺酮,其在酸水解时得到喹诺酮-[3-13C]羧酸。通过这种方式,萘啶酸(诺氟沙星的直接前体)和喹诺酮 WIN57273 在代谢稳定的羧酸片段中被碳 13 标记。