New β-lactam compounds containing a bis(indolyl)-framework were synthesized. The key step in the synthetic strategy was a nucleophilic addition of unprotected indole to a suitable butyl aldehyde anchored on the C-4 side chain of azetidinone intermediates. The use of an ionic liquid as reaction medium allowed the use of a catalytic amount of Dy(OTf)3 for the nucleophilic addition and facilitated the isolation of the product.
合成了含有双(
吲哚基)-框架的新β-内
酰胺化合物。合成策略的关键步骤是将未受保护的
吲哚与锚定在
氮杂
环丁酮中间体的 C-4 侧链上的合适
丁醛进行亲核加成。使用
离子液体作为反应介质允许使用催化量的 Dy(OTf)3 进行亲核加成并促进产物的分离。