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-
1,3-Dipolar cycloaddition reaction on carbohydrate template: Stereoselective synthesis of glycospiroheterocycles
作者:R. Prasanna、S. Purushothaman、R. Raghunathan
DOI:10.1016/j.tet.2020.131398
日期:2020.8
A simple and an efficient stereoslective synthesis of glycospiroheterocycles has been accomplished via 1, 3-dipolar cycloaddition (1,3-DC) reaction. The azomethine ylide generated by decarboxylative condensation of N-alkylated α-amino acids with various diketones was trapped by sugar derived dipolarophiles to give glycospiroheterocycles in good yield (72–94%). All the cycloadducts were well characterized