An Efficient Route toward 2-Amino-β-<scp>d</scp>-galacto- and -glucopyranosides via Stereoselective Michael-Type Addition of 2-Nitroglycals
作者:Weihua Xue、Jiansong Sun、Biao Yu
DOI:10.1021/jo900609s
日期:2009.7.17
Under the catalysis of DMAP or PPY in CH2Cl2, the Michael-typeaddition of nucleophiles to 2-nitrogalactal or 2-nitroglucal leads in excellent yields and stereoselectivity to the corresponding β-galacto- or -glucopyranosides, which are ready precursors to the biologically significant β-d-galactosamine and -glucosamine units.