作者:Eduardo M. Sobarzo-Sánchez、Jeannette Arbaoui、Philippe Protais、Bruce K. Cassels
DOI:10.1021/np990433j
日期:2000.4.1
(1) was brominated, chlorinated, and iodinated using molecular bromine in acetic acid or N-halosuccinimides in trifluoroacetic acid. Initial halogenation occurs at C-3, followed (in the cases of chlorine and bromine) by the less reactive C-8, to afford 3-haloboldines- and 3,8-dihaloboldines (2-5). Using a 2:1 ratio of N-iodosuccinimide to boldine, however, only the 3-iodo derivative 6 was obtained. Radioligand
(S)-(+)-Boldine(1)使用分子溴在乙酸中或N-卤代琥珀酰亚胺在三氟乙酸中的方法进行溴化,氯化和碘化。初始卤化发生在C-3,然后(在氯和溴的情况下)是反应性较低的C-8,得到3-卤代金胺和3,8-二卤代金(2-5)。但是,使用N-碘代琥珀酰亚胺与丁二酮的比例为2:1,仅获得了3-碘代衍生物6。这些产品的放射性配体结合研究表明,在C-3处进行丁香的卤化有利于D(1)-(vs D(2)-)多巴胺能受体的亲和力,在3-ioboldine的情况下获得较低的纳摩尔IC(50)值(6)。