Various naphthoquinone derivatives were prepared from a natural product, 5-hydroxy-2-methyl-1, 4-naphthoquinone (plumbagin); these were mostly substituted at C-3 through carbon-carbon bond formation mediated by a metal-based oxidant such as lead tetraacetate in the presence of various carboxylic acids. The halogenated compounds showed stronger ichthyotoxicity than plumbagin, but other derivatives were less active.
各种
萘醌衍
生物是从
天然产物5-羟基-
2-甲基-1,4-萘醌(
铅醌)中制备的;这些衍
生物主要通过
金属氧化剂(如
醋酸铅四
乙酯)在多种
羧酸存在下,通过碳-碳键形成在C-3位进行取代。卤素化化合物的鱼毒性比
铅醌更强,但其他衍
生物的活性较低。