Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle, Germany.
Beilstein J Org Chem. 2011;7:1504-7. doi: 10.3762/bjoc.7.175. Epub 2011 Nov 7.
An improved total synthesis of (-)-julocrotine in three steps from Cbz-glutamine, in 51% overall yield, is presented. To demonstrate the potential of the heterocyclic moiety for diversity oriented synthesis, a series of (-)-julocrotine analogues was synthesized by employing the heterocyclic precursor as an amino input in Ugi four-component reactions (Ugi-4CR) [1].
本文从 Cbz-谷氨酸出发,经三步反应以 51%的总产率完成了 (-)-julocrotine 的改进全合成。为了展示杂环部分在多样性导向合成中的潜力,作者采用杂环前体作为氨基输入物,通过 Ugi 四组分反应(Ugi-4CR)[1]合成了一系列 (-)-julocrotine 类似物。