Stereocontrolled Synthesis of Enantiopure Polyhydroxylated Azetidines via 1,2-Oxazines
作者:Hans-Ulrich Reissig、Vjekoslav Dekaris
DOI:10.1055/s-0029-1218531
日期:2010.1
A set of new enantiopure polyhydroxylated azetidine derivatives has been prepared. The key starting materials, 3,6-dihydro-2H-1,2-oxazines, were subjected to a hydroboration―oxidation sequence to introduce the required 5-hydroxy group. Subsequent cleavage of the N―O bond with samarium diiodide, selective protection of the primary hydroxyl group, and ring closure after activation of the secondary hydroxyl