Asymmetric Total Synthesis of (+)-Didemniserinolipid B via Achmatowicz Rearrangement/Bicycloketalization
作者:Jingyun Ren、Rongbiao Tong
DOI:10.1021/jo501142q
日期:2014.8.1
of (+)-didemniserinolipid B in 19 linear steps, featuring a highly efficient and enantioselective construction of 6,8-dioxabicyclo[3.2.1]octane (6,8-DOBCO) framework via a rarely explored Achmatowicz rearrangement/bicycloketalization strategy. In addition, the first total synthesis of the proposed (+)-didemniserinolipid C was accomplished with 41.6% yield in 4 steps from a common advanced intermediate
开发了一种新的合成策略,以19个线性步骤不对称地合成(+)-二酰胺二脂B,具有高效,对映选择性的6,8-二氧杂双环[3.2.1]辛烷(6,8-DOBCO)构架通过很少探索的Achmatowicz重排/双环缩酮化策略。另外,提出的(+)-二去脂神经节苷脂C的第一个全合成反应是从一个普通的高级中间体18分四步以41.6%的收率完成的,并且提出了一种可能的(+)-二去脂神经节苷脂C的修正结构。新的聚合合成策略极大地加快了双双神经油脂及其类似物进入生物活性评估的进程。