Asymmetric synthesis of (+)-stagonolide C and (−)-aspinolide A via organocatalysis
作者:Anil M. Shelke、Varun Rawat、Gurunath Suryavanshi、Arumugam Sudalai
DOI:10.1016/j.tetasy.2012.10.007
日期:2012.12
A new enantioselective synthesis of two important fungal metabolites, (+)-stagonolide C and (−)-aspinolide A, has been described from readily available raw materials. Proline catalyzed asymmetric α-aminooxylation and Jorgensen’s epoxidation of aldehydes are the key reactions employed in the introduction of chirality. The formation of the 10-membered lactone core structure was finally accomplished via
已经从容易获得的原料中描述了两种重要的真菌代谢物,(+)-斯塔格奈德C和(-)-aspinolide A的新的对映选择性合成。脯氨酸催化的不对称α-氨氧基化和约根森的醛环氧化是引入手性的关键反应。最终通过Steglich酯化反应和闭环易位反应完成了10元内酯核心结构的形成。