作者:Jae Hyun Kim、Yeonghun Song、Min Jung Kim、Sanghee Kim
DOI:10.1021/acs.joc.0c00017
日期:2020.4.3
Herein, we report the asymmetric total syntheses of inthomycin antibiotics containing a methylene-interrupted oxazolyl-triene motif. Utilizing the α,β-unsaturated aldehyde as a common intermediate, all three inthomycins A–C were divergently synthesized. The asymmetric ynone reduction provided an R-configured secondary alcohol as in the natural products with high enantioselectivity. The geometrically
在此,我们报告了含有亚甲基中断的恶唑基-三烯基序的合成霉素抗生素的不对称合成。以α,β-不饱和醛为常见中间体,所有三种Inthomycin A–C均以不同方式合成。如天然产物中那样,不对称的炔酮还原提供了R-构型的仲醇,具有高对映选择性。通过添加铜酸甲酯共轭物,α,β-不饱和醛中间体的异构化和立体保持性交叉偶联反应,立体选择性地建立了每一种霉素的几何上不同的三烯单元。