oxoheterocyclic-fused ortho-quinone derivatives were synthesized from readily available benzofuranol and N-substituted dienes via IBX oxidation–cycloaddition–aromatization procedure. The regiospecific Diels–Alder cycloaddition reactions of N-dienes were achieved efficiently with a variety of dienophiles. It is found that the amide moiety in the molecular could be preserved or eliminated by control of the aromatization
通过IBX氧化-环加成-芳构化方法,从容易获得的
苯并呋喃醇和N-取代的二烯中合成了一系列新的天然
丹参酮样氧杂环稠合的邻醌衍
生物。N-二烯的区域特异性Diels–Alder环加成反应可通过多种亲双烯体有效实现。发现通过控制芳构化条件可以保留或消除分子中的酰胺部分。选定的氧杂环稠合的邻醌以及几种
硫杂环稠合的邻醌我们评估了之前获得的
对苯二酚对不同癌
细胞系的细胞毒性,并讨论了结构-活性关系(
SAR)。