We describe herein a highly stereoselective access to Cbz-protected β-enaminones 2 based on the NaOH catalyzed rearrangement of propargylichydroxylamines 1. The synthetic potential of these β-enaminones is illustrated in an original synthesis of pyrimidines.
Straightforward synthesis of various chiral pyrimidines bearing a stereogenic center adjacent to the C-2 position, including C-terminal peptide isosteres
作者:Sami Sahtel、Chayma Ben Maamer、Rafâa Besbes、Emmanuel Vrancken、Jean-Marc Campagne
DOI:10.1007/s00726-022-03192-y
日期:2022.11
Boc-AA-NH2 and β-enaminones. This strategy allows the synthesis of a large variety of chiral pyrimidines (18 examples) with good yields from the chiral pool. In the case of peptide isosteres, this procedure proved to be highly stereoretentive and paves the way to the construction of C-terminal modified peptidomimetics as illustrated in the synthesis of two original pyrimidines containing pseudo-dipeptides
本研究描述了从现成的 Boc-AA-NH 2和 β-烯胺酮中有效获取对映体富集的嘧啶衍生物的方法。该策略允许从手性池中以良好的收率合成多种手性嘧啶(18 个例子)。在肽等排物的情况下,该程序被证明具有高度立体保留性,并为构建 C 末端修饰的肽模拟物铺平了道路,如两个含有假二肽的原始嘧啶的合成所示。