Telomestatin: Formal Total Synthesis and Cation-Mediated Interaction of Its <i>seco</i>-Derivatives with G-Quadruplexes
作者:Jörg Linder、Thomas P. Garner、Huw E. L. Williams、Mark S. Searle、Christopher J. Moody
DOI:10.1021/ja109158k
日期:2011.2.2
developing new potential therapeutic agents for cancer. An efficient formal total synthesis of telomestatin is reported in which the key steps are the use of dirhodium(II)-catalyzed reactions of diazocarbonyl compounds to generate six oxazole rings, demonstrating the power of rhodium carbene methodology in organic chemical synthesis. CD spectroscopy establishes that seco-derivatives of telomestatin are potent
结构独特的天然产物 telomestatin 在大环排列中包含七个恶唑环和一个含硫噻唑啉。该化合物是端粒酶的有效抑制剂,因此为开发新的潜在癌症治疗剂提供了结构框架。报道了一种有效的端美他汀全合成,其中关键步骤是使用二氮羰基化合物的二铑 (II) 催化反应生成六个恶唑环,证明了铑卡宾方法在有机化学合成中的作用。CD 光谱表明,端粒抑制素的二级衍生物是源自人类端粒重复序列的 G-四链体结构的有效稳定剂。质谱研究,经分子动力学模拟证实,