frequently found in natural products and pharmaceutically relevant substances. Herein, a strategy for the synthesis of polysubstituted pyrrolizidine-3-ones by catalytic reductive domino-type recyclization of properly functionalized isoxazoline N-oxides was developed. The process is diastereoselective, and one diastereomer (out of four possible ones) is predominant in many of the studied cases. Using the
吡咯里西啶是
天然产物和药物相关物质中最常见的饱和N-杂环支架之一。在此,开发了一种通过适当官能化的
异恶唑啉N-氧化物的催化还原多米诺型再环化来合成多取代
吡咯里西啶-3-酮的策略。该过程是非对映选择性的,并且一种非对映体(四种可能的非对映体)在许多研究案例中占主导地位。使用所开发的方法,制备了有效的 GSK 的 PDE4
抑制剂和 M
SD 的有效的 hNK 1拮抗剂的修饰物。