Total Synthesis of Thiostrepton. Assembly of Key Building Blocks and Completion of the Synthesis
作者:K. C. Nicolaou、Mark Zak、Brian S. Safina、Anthony A. Estrada、Sang Hyup Lee、Marta Nevalainen
DOI:10.1021/ja052934z
日期:2005.8.1
completion of the total synthesis of thiostrepton (1) is described. The synthesis proceeded from key building blocks 2-5, which were assembled into a growing substrate that finally led to the target molecule. Thus, the dehydropiperidine peptide core 2 was, after appropriate manipulation, coupled to the thiazoline-thiazole fragment 3, and the resulting product was advanced to intermediate 11 possessing the
描述了硫链丝菌肽 (1) 的全合成完成。合成从关键的构建块 2-5 开始,它们被组装成一个不断增长的基质,最终形成目标分子。因此,脱氢哌啶肽核心2在适当操作后与噻唑啉-噻唑片段3偶联,所得产物被推进为具有噻唑啉-噻唑大环的中间体11。然后将双脱氢丙氨酸尾等价物 4 和喹哪二酸片段 5 依次掺入,并将如此获得的产物进一步精制以形成分子的第二个大环。沿途遇到的几个障碍被系统地调查和克服,最终开辟了道路,通过中间体 20、32、44、45 和 46,到达目标天然产物 1。