Stereocontrolled conversion of some optically active (4S,5R)-dihydroisoxazoles into acyclic 3-acetamido-1,2-diols
作者:Jamie F Bickley、Stanley M Roberts、Ye Runhui、John Skidmore、Corina B Smith
DOI:10.1016/s0040-4020(03)00868-8
日期:2003.7
Optically active (4S,5R)-dihydroisoxazoles 5a–c (90–91% ee) have been prepared by reaction of the epoxyketones 4a–c with hydroxylamine. Reduction of compounds 5a and 5b using lithium aluminium hydride took place exclusively from the Re face to give (1R,2S,3S)-1,3-disubstituted-3-aminopropane-1,2-diols 6a and 6b. These amino-diols were characterised by N-acetylation and the stereochemical sense of the