Discovery and Synthesis of Namalide Reveals a New Anabaenopeptin Scaffold and Peptidase Inhibitor
作者:Pradeep Cheruku、Alberto Plaza、Gianluigi Lauro、Jessica Keffer、John R. Lloyd、Giuseppe Bifulco、Carole A. Bewley
DOI:10.1021/jm201238p
日期:2012.1.26
elucidation, and solid-phase synthesis of namalide, a marine natural product, are described. Namalide is a cyclic tetrapeptide; its macrocycle is formed by only three amino acids, with an exocyclic ureido phenylalanine moiety at its C-terminus. The absolute configuration of namalide was established, and analogs were generated through Fmoc-based solid phase peptide synthesis. We found that only natural
描述了海洋天然产物 namalide 的发现、结构解析和固相合成。Namalide 是一种环状四肽;它的大环仅由三个氨基酸形成,在其 C 端有一个环外脲基苯丙氨酸部分。建立了namalide的绝对构型,并通过基于Fmoc的固相肽合成生成类似物。我们发现只有天然的namalide而不是含有l- Lys或l - allo的类似物-Ile 在亚微摩尔浓度下抑制羧肽酶 A。同时,一种旨在识别 namalide 的蛋白质靶标的反向虚拟筛选方法选择羧肽酶 A 作为第三高得分命中。Namalide 代表了一种新的 anabaenopeptin 型支架,其蛋白酶抑制活性表明 13 元大环内酰胺可以表现出与更常见的六肽相似的活性。