Highly regioselective synthesis of glycospiro heterocycles through 1,3-dipolar cycloaddition reaction
作者:R. Prasanna、S. Purushothaman、R. Raghunathan
DOI:10.1016/j.tetlet.2010.06.098
日期:2010.8
A highly regio-selective synthesis of novel glycospiropyrrolidines has been accomplished by 1,3-dipolarcycloaddition (1,3-DC) reaction. A unique dipolarophile derived from galactose has been reacted with azomethine ylide generated from 1,2-diketones and secondary aminoacids to give the corresponding spiro glycoheterocycles in good yields. The structures were assigned by 2D NMR spectra and the regio-