作者:Christopher C. Nawrat、Leoni I. Palmer、Alexander J. Blake、Christopher J. Moody
DOI:10.1021/jo400737f
日期:2013.6.7
Two complementary approaches are presented for the synthesis of the quinone chromophores of the naphthoquinone ansamycins and related natural products. The first involves the use of an improved protocol for the manganese(III) acetate mediated cyclization of 5-aryl-1,3-dicarbonyl compounds to β-naphthols, leading to the simple, scalable preparation of building blocks suitable for the synthesis of naturally
提出了两种互补的方法来合成萘醌安沙霉素和相关天然产物的醌发色团。首先涉及使用改进的方案,以乙酸锰(III)介导的5-芳基-1,3-二羰基化合物环化成β-萘酚,从而导致可简单,可扩展地制备适合天然合成的结构单元发生氨基萘醌。第二种方法涉及一系列新的含酯的Danishefsky型二烯与N保护的氨基苯醌的Diels-Alder反应,以更快速地获得相似的中间体。