Total Synthesis of Everninomicin 13,384-1—Part 1: Retrosynthetic Analysis and Synthesis of the A1B(A)C Fragment
作者:K. C. Nicolaou、Rosa Maria Rodríguez、Helen J. Mitchell、Hideo Suzuki、Konstantina C. Fylaktakidou、Olivier Baudoin、Floris L. van Delft
DOI:10.1002/1521-3765(20000901)6:17<3095::aid-chem3095>3.0.co;2-4
日期:2000.9.1
intermediate for rings B and C, but was faced with final protecting group problems. The second, and successful approach, involved a 1,2-phenylsulfeno migration and a sulfur directed glycosidation procedure to link rings B and C, as well as an acyl fluoride intermediate to install the sterically hindered aryl ester moiety (ring A1). The final stages of the synthesis of the required 2-phenylseleno glycosyl fluoride
在这四篇文章的系列文章的第一篇中,我们介绍了抗鸟药有效的抗药性强大的抗生素everninomicin 13,384-1(1),作为总合成的目标,并讨论了其逆合成分析。根据合成所需的三个定义的片段(2:A1B(A)C片段; 4:DE片段; 5:FGHA2片段),我们在此处描述了A1B(A)C嵌段的两种方法。第一种策略依靠烯烃复分解反应来构建环B和C的通用中间体,但面临最终的保护基问题。第二种成功的方法涉及1,2-苯磺基迁移和连接环B和C的硫定向糖苷化步骤,以及安装空间位阻芳基酯部分(环A1)的酰基氟中间体。