Streptolydigin is a highly potent, broad-spectrum antibiotic produced by Streptomyces lydicus, which inhibits bacterial RNA polymerase. We describe the first synthesis of streptolydigin, which was assembled in a highly convergent and fully stereocontrolled fashion with a longest linear sequence of 24 steps starting from commercially available precursors. The assembly process entailed preparation of
Streptolydigin 是一种由 Streptomyces lydicus 产生的高效广谱
抗生素,可抑制细菌 RNA 聚合酶。我们描述了链球菌素的首次合成,它以高度收敛和完全立体控制的方式组装,最长的线性序列为 24 步,从市售前体开始。组装过程需要制备
天然产物的完全精细的链霉和 ydiginic 亚基,然后在三步一锅法中进行高效结合,其中包括 Dieckmann 环化和伴随的
酰亚胺开环、Horner-Wadsworth-Emmons
烯化、和
脱甲
硅烷。