作者:Hiroaki Tominaga、Naoyoshi Maezaki、Minori Yanai、Naoto Kojima、Daisuke Urabe、Risa Ueki、Tetsuaki Tanaka
DOI:10.1002/ejoc.200500850
日期:2006.3
We have accomplished the first total synthesis of longimicin D (1), which displays potent cytotoxicity against human pancreatic carcinoma cells. The bis-THF core bearing congested stereocenters was constructed by our methodology for synthesis of poly-THF cores, which consists of asymmetric alkynylation with the C4 unit and stereodivergent THF ring formation. Although we had planned to join the C9–C34
我们已经完成了 longimicin D (1) 的首次全合成,它对人胰腺癌细胞显示出有效的细胞毒性。带有拥挤立体中心的双四氢呋喃核是通过我们合成聚四氢呋喃核的方法构建的,该核由具有 C4 单元的不对称炔基化和立体发散的四氢呋喃环形成组成。尽管我们计划加入 C9-C34 双 THF 核心段 2 和 C1-C8 γ-内酯段 3,但模型研究表明耦合很困难。我们通过使用代表 C3 到 C12 位置的多亚甲基链的官能化炔烃 19 应用双 THF 醛 24 的不对称炔基化来解决该问题。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)