Evolution of a Total Synthesis of (−)-Kendomycin Exploiting a Petasis−Ferrier Rearrangement/Ring-Closing Olefin Metathesis Strategy
作者:Amos B. Smith、Eugen F. Mesaros、Emmanuel A. Meyer
DOI:10.1021/ja060369+
日期:2006.4.1
stereocontrolled total synthesis of (-)-kendomycin (1) has been achieved. The synthesis proceeds with a longest linear sequence of 21 steps, beginning with commercially available 2,4-dimethoxy-3-methylbenzaldehyde (12). Highlights of the synthesis include an effective Petasis-Ferrier union/rearrangement tactic to construct the sterically encumbered tetrahydropyran ring, a ring-closing metathesis to generate
已经实现了 (-)-kendomycin (1) 的收敛立体控制全合成。合成以最长的 21 步线性序列进行,从市售的 2,4-二甲氧基-3-甲基苯甲醛 (12) 开始。合成的亮点包括有效的 Petasis-Ferrier 结合/重排策略以构建空间位阻四氢吡喃环、闭环复分解以生成 C(4a-13-20a) 大环、有效的环氧化/脱氧序列以异构化 C (13,14) 烯烃和仿生醌-甲基-乳糖醇组装完成合成。