New methodology for the stereoselective synthesis of unnatural alpha-amino acids

QD Chemistry

Drummond, Lorna J. ; Sutherland, Andrew

University:University of Glasgow

Department:School of Chemistry

关键词: amino acids, organic synthesis;   

Others  :  http://theses.gla.ac.uk/2827/1/2011drummondphd.pdf

来源: University of Glasgow

【 摘 要 】

New general methodology for the stereoselective synthesis of unnatural alpha-amino acids has been developed.Early work focussed on investigating methods for the generation of chiral allylic alcohols using cross-metathesis of a simple enone with various terminal alkenes, followed by an asymmetric ketone reduction.The allylic alcohols were then converted to protected allylic amines via Overman rearrangement chemistry.Oxidative alkene cleavage and hydrolysis of these intermediates generated a range of alpha-amino acid targets.Attempts were also made to apply the developed methodology to the synthesis of a simple alpha,alpha-disubstituted alpha-amino acid target.The Overman rearrangement was also applied to the generation of a late-stage intermediate which could be used in the synthesis of (2S,3S)-capreomycidine, a component of a number of peptides which exhibit antibacterial activity.