The use of 2-deoxy-2-trichloroacetamido-?-glucopyranose derivatives in syntheses of hyaluronic acid-related tetra-, hexa-, and octa-saccharides having a methyl β-?-glucopyranosiduronic acid at the reducing end
Gram-scale syntheses of the (1 → 3)-linked and (1 → 4)-linked hyaluronan disaccharides
作者:Sara L. Adamski-Werner、Bryan K.S. Yeung、Lynne A. Miller-Deist、Peter A. Petillo
DOI:10.1016/j.carres.2004.03.005
日期:2004.5
The first gram-scale syntheses of two hyaluronan disaccharides are described. Construction of the (1-->4)-linked disaccharide 12 was achieved in 12% overall yield using 2,3-bis-dimethyl acetal protection in combination with chlorosilane-induced carbamate cleavage methodologies. The uronic acid functionality was installed using TEMPO oxidation with NaOCl as the hypochlorite source. The (1-->3)-linked