Smith Amos B, Cox Jason M, Furuichi Noriyuki, Kenesky Craig S, Zheng Junying, Atasoylu Onur, Wuest William M
Department of Chemistry, Monell Chemical Senses Center, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Org Lett. 2008 Dec 18;10(24):5501-4. doi: 10.1021/ol8019132.
A convergent synthesis of (-)-2-epi-peloruside A has been achieved. Highlights include implementation of multicomponent type I anion relay chemistry (ARC) to unite 2-TBS-1,3-dithiane with two epoxides to construct the eastern hemisphere, a late-stage dithiane union to secure the complete, fully functionalized carbon backbone, and Yamaguchi macrolactonization, which led to (-)-2-epi-peloruside A via an unexpected epimerization at C(2).
已实现(-)-2-表-佩洛里西德A的汇聚合成。亮点包括采用多组分I型阴离子中继化学(ARC)将2-TBS-1,3-二硫烷与两种环氧化合物结合以构建东半球,后期二硫烷结合以确保完整、完全官能化的碳骨架,以及山口大环内酯化,其通过C(2)处意外的差向异构化得到(-)-2-表-佩洛里西德A。