作者:Lothar Werner Schenck、Krystina Kuna、Walter Frank、Antje Albert、Christian Asche、Uwe Kucklaender
DOI:10.1016/j.bmc.2006.01.026
日期:2006.5
5-hydroxyindoles were not obtained from this diquinone. It yielded similar reaction products of the Nenitzescu reaction like other quinones activated by two electron-withdrawing groups. Furthermore, these new compounds 8A were found to constitute precursors for the synthesis of azonines. The conversion to dibenzoazonines 13 occurred in an unusual and up to now unknown way consisting of isomerization, ring opening
在Nenitzescu反应中,将1,4,9,10-蒽醌5与烯胺6反应生成意外的3,3a,6,12-四氢-3a,7-二羟基-2-甲基-6,12-二氧代萘[ 2,3-d]吲哚-1-汽车的羧酸酯化了8A。但是,从该二醌未获得蒽环类的萘缩合的5-羟基吲哚。它产生了Nenitzescu反应的类似反应产物,就像被两个吸电子基团激活的其他醌一样。此外,发现这些新的化合物8A构成合成腺嘌呤的前体。转化为二苯并azonines 13的方式非常罕见,直到现在还不为人所知,包括异构化,开环和重新闭合。2-氯蒽醌19与烯胺6以乙烯基葡糖酰氯反应生成吡咯并蒽醌20。未观察到氯的取代。萘酚缩合的吲哚26是通过未取代的1,4-蒽醌25与烯胺6通过常规的Nenitzescu路线反应而获得的。吲哚26被转化为曼尼希碱,通过中间体邻醌甲基化物的狄尔斯-阿尔德反应进一步与二聚体反应。在NCI面向人类疾病的体外抗癌筛选中,对大多