Synthesis of <i>cis</i>-Octahydroindoles via Intramolecular 1,3-Dipolar Cycloaddition of 2-Acyl-5-aminooxazolium Salts
作者:Corey H. Basch、Jameson A. Brinck、Joaquin E. Ramos、Stephen A. Habay、Glenn P.A. Yap
DOI:10.1021/jo301600p
日期:2012.11.16
products contain 2-amido and 7-hydroxyl substituents. A series of 2-acyl-5-aminooxazoles were prepared in one step. Upon methylation of the oxazole nitrogen atom, the substrates underwent rapid intramolecular 1,3-dipolar cycloaddition with a tethered alkene and, after reduction with excess hydride, produced octahydroindoles with excellent diastereoselectivity. The method allows for the installation