A new approach for the N- and S-galactosylation of 5-arylidene-2-thioxo-4-thiazolidinones
作者:Ahmed I. Khodair、Jean-Pierre Gesson
DOI:10.1016/j.carres.2011.09.035
日期:2011.10
N- and S-galactosylation was carried out via the reaction of 5-((Z)-arylidene)-2-thioxo-4-thiazolidinones with 2,3,4,6-tetra-O-acetyl-α-d-galactopyranosyl bromide under alkaline conditions or under silylation conditions. Deacetylation of the N-galactosylation products was performed with concentrated hydrochloric acid in methanol (3.5%) or sodiummethoxide in methanol without cleavage of the 2-thioxo-4-thaizolidinone