E. O'brien, Elizabeth Lee, P. O'Colla
1974
Citations
0
Influential Citations
9
Citations
Journal
Carbohydrate Research
Abstract
Abstract When 1,2,3,4-tetra- O -acetyl-α- D -mannopyranose was fused with a catalytic amount of toluene- p -sulphonic acid, 6- O -α- D -mannopyranosyl- D -mannose and 4- O -α- D -mannopyranosyl- D -mannose were isolated after deacetylation of the reaction mixture. No β- D -linked disaccharide was detected in the reaction mixture. When the corresponding β- D -tetra-acetate was fused with zinc chloride as catalyst, higher oligomers were formed, and a D -mannan was isolated and shown to be mainly an α-(1→6)-linked polymer having d.p. of 10. With 5% of zinc chloride, the α- D -tetra-acetate showed oligosaccharide formation, and yielded a smaller proportion of a (1→6)-linked D -mannan.