作者:Karan, Ganesh、Sahu, Samrat、Metya, Abhisek、Maji, Modhu Sudan
DOI:10.1002/anie.202405212
日期:——
α-hydroxy imines possessing synthetically challenging vicinal tetrasubstituted stereocenters. The electrophilicity of the imine and steric effects promoted a face-selective 1,2-allyl migration in the presence of Lewis acidic boronic acids, yielding chiral α-amino ketones with excellent diastereoselectivity. This method was applied to the total synthesis of hapalindole alkaloids.
α-酮亚胺的立体选择性烯丙基化生成对映体纯的 α-羟基亚胺,其具有合成上具有挑战性的邻位四取代立体中心。亚胺的亲电性和空间效应促进了路易斯酸性硼酸存在下的面选择性 1,2-烯丙基迁移,产生具有优异非对映选择性的手性 α-氨基酮。该方法应用于哈帕吲哚生物碱的全合成。