Synthesis of Annelated Azaheterocycles Containing a 5-Carbamoylpyrazin-3-one Fragment by a Modification of the Four-Component Ugi Reaction
作者:Alexey P. Ilyin、Vladimir V. Kobak、Irina G. Dmitrieva、Yulia N. Peregudova、Veronika A. Kustova、Yulia S. Mishunina、Sergey E. Tkachenko、Alexandre V. Ivachtchenko
DOI:10.1002/ejoc.200500522
日期:2005.11
A convenient synthesis of novel imidazole- and pyrrole-fused 1-oxo-1,2,3,4-tetrahydropyrazine heterocyclic structures by a novel modification of the four-component Ugi condensation is described. The usefulness and versatility of the developed approach for the synthesis of variously substituted compounds is demonstrated and the scope and limitations of the chemistry involved are discussed. (© Wiley-VCH
描述了通过四组分 Ugi 缩合的新型修饰,方便合成新型咪唑和吡咯稠合的 1-oxo-1,2,3,4-四氢吡嗪杂环结构。证明了所开发的各种取代化合物合成方法的实用性和多功能性,并讨论了所涉及化学的范围和局限性。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)