11-Step Enantioselective Synthesis of (−)-Lomaiviticin Aglycon
作者:Seth B. Herzon、Liang Lu、Christina M. Woo、Shivajirao L. Gholap
DOI:10.1021/ja200034b
日期:2011.5.18
Lomaiviticins A and B are complex antitumor antibiotics that were isolated from a strain of Micromonospora. A confluence of several unusual structural features renders the lomaiviticins exceedingly challenging targets for chemical synthesis. We report an 11-step, enantioselective synthetic route to lomaiviticinaglycon. Our route proceeds by late-stage, stereoselective dimerization of two equivalent
Lomaiviticins A 和 B 是从小单孢菌菌株中分离出来的复合抗肿瘤抗生素。几种不同寻常的结构特征的融合使 lomaiviticin 成为化学合成极具挑战性的目标。我们报告了 lomaiviticin 苷元的 11 步对映选择性合成路线。我们的路线通过两个等效单体中间体的后期立体选择性二聚化进行,这种转化可能与天然产物的生物合成有相似之处。我们描述的路线具有可扩展性和收敛性,为确定这些天然产物的作用方式奠定了基础。