Highly Stereocontrolled Synthesis of <i>g</i><i>em</i>-Difluoromethylenated Azasugars: <scp>d</scp>- and <scp>l</scp>-1,4,6-Trideoxy-4,4-difluoronojirimycin
作者:Ruo-Wen Wang、Feng-Ling Qing
DOI:10.1021/ol050558h
日期:2005.5.1
D-1,4,6-Trideoxy-4,4-difluoronojirimycin and L-1,4,6-trideoxy-4,4-difluoronojirimycin, a novel series of gem-4,4-difluoromethylenated azasugars, were synthesized from CF3CH2OH in 10 steps. A key step was the highly diastereoselective construction of the piperidine ring via reductive amination.