The synthesis and biological activity of novel spiro-isoxazoline C-disaccharides based on 1,3-dipolar cycloaddition of exo-glycals and sugar nitrile oxides
作者:Ping-Zhu Zhang、Xiao-Liu Li、Hua Chen、Ya-Nan Li、Rui Wang
DOI:10.1016/j.tetlet.2007.09.007
日期:2007.10
A series of novel spiro-isoxazoline C-disaccharides were synthesized by the key step of 1,3-dipolar cycloaddition reactions of exo-glycals and sugar nitrileoxides, and followed by catalytic debenzylation in the presence of Pd(OH)2/C. The cycloaddition reactions were carried out stereoselectively and afforded α-isomers exclusively except in the case of galactose. The biological activities of the novel