作者:Kun-Liang Wu、Eduardo V. Mercado、Thomas R. R. Pettus
DOI:10.1021/ja1115524
日期:2011.4.27
An expeditious convergent total synthesis affords (±)-γ-rubromycin (1) in 4.4% overall yield. The longest linear sequence is 12 steps from commercial starting materials. The effort highlights a remarkable late-stage oxidative [3 + 2] cycloaddition for construction of the spiroketal, a regioselective carbonyl methylenation, a boron tribromide promoted deprotection, ortho- to para- naphthoquinone spiroketal
快速收敛全合成以 4.4% 的总产率提供 (±)-γ-红霉素 (1)。最长的线性序列是从商业起始材料开始的 12 步。这项工作突出了用于构建螺缩酮的显着后期氧化 [3 + 2] 环加成、区域选择性羰基甲基化、三溴化硼促进的脱保护、邻-对萘醌螺缩酮重排和互变异构化序列。