STUDIES IN GANGLIOSIDE SERIES .2. FURTHER APPLICATION OF N-DICHLOROACETYLHEXOSAMINYL BROMIDES TO SYNTHESIS OF AMINOSACCHARIDES

The synethesis of galactosaminyl-(1→6)-galactose by two different routes is reported. It involves condensation of bromide III with diketal IV, or with 1,2,3,4-tetraacetylgalactose. The protecting dichloroacetyl group, in addition to its removal by mild alkaline hydrolysis, can be directly converted into the acetyl group by catalytic hydrogenation. © 1969, American Chemical Society. All rights reserved.