Cyclic imines bearing CF 3 and C 2 F 5 group were successfully used for the first Ugi multicomponent synthesis of polyfluoroalkyl-substituted proline, homoproline, and azepan carboxylic acid derivatives. Based on the suggested reaction the first synthesis of dipeptides containing α-CF 3 cyclic amino acids residue was described. The scope and limitations of the approach are discussed.
带有CF 3 和C 2 F 5 基团的环状亚胺已成功用于多氟烷基取代的脯氨酸、高脯氨酸和氮杂环庚烷羧酸衍生物的首次Ugi多组分合成。基于所建议的反应,描述了含有α-CF 3 环状氨基酸残基的二肽的第一次合成。讨论了该方法的范围和局限性。
The Ugi reaction with 2-substituted cyclic imines. Synthesis of substituted proline and homoproline derivatives
作者:Valentine G. Nenajdenko、Anton V. Gulevich、Elizabeth S. Balenkova
DOI:10.1016/j.tet.2006.04.021
日期:2006.6
The Ugi three-component reaction with 2-substituted five-, six-, and seven-membered cyclic imines was investigated. The reaction opens a newroute to substituted proline and homoproline derivatives. It was shown that the method is efficient for the one-step preparation of seminatural dipeptides containing natural amino acid residues, and fragments of substituted proline or pipecolinic acid. The scope