Glucuronic acid, 2-acetamido-2-deoxy

The formation of these products from the dialkyl dithioacetals falls into two categories. The first group comprises compounds readily formed (or isolated), and is confined to derivatives of D-glucose, D-glucuronic acid, 2-acetamido-2-deoxy-D-glucose, and D-ribose. The products are obtained in high yield the formation is generally accomplished in aqueous solution, with one mole of mercuric chloride per mole of dithioacetal, and the solution is kept neutral. 

In the cell-wall antigen from Staphylococcus aureus M, taurine is linked as an amide (51) to a 2-acetamido-2-deoxy-D-galactosyluronic residue. l-Threonine and L-glutamic acid are linked as amides to D-glucuronic acid residues in the LPS from Rhodopseudomonas sphaeroides ATCC 17023 and in the capsular polysaccharide from Klebsiella K82, respectively. In the capsular polysaccharide from E. coli K54, L-serine and L-threonine, in the ratio 1 9, are linked to the carboxyl group of a D-glucuronic acid residue. In the capsular polysaccharide from Haemophilus influenzae type d,... 

The amino sugar counterparts of D-glucuronic acid and nonsulfated L-iduronic acid in heparin are either N-acetylated, or nonsulfated at C-6, or both. 2-Acetamido-2-deoxy-D-glucosyl residues account for only a minor proportion of the total hexosamine in heparin, and are especially low in beef-lung preparations (see Table II).8,138,147 -149 In contrast, they... 

Ana,6s (2 AM6S (where I = a-L-iduronic acid, ANA6S = 2-acetamido-2-deoxy-a-D-glucopyranose 6-sulfate, G = / -D-glucuronic acid, and AMes = 2,5-anhydro-D-mannitol 6-sulfate, the last arising from 2-deoxy-... 

The repeat distance is 18.6 A (1.86 nm), with a meridional reflection on the first layer-line. A tetrasaccharide repeating-unit was favored. It was suggested that the linkage between the 2-acetamido-2-deoxy-D-glucose and D-glucuronic acid residues is alternately a-D-(l — 4) and /3-d-(1 — 4). 

Another black, yeastlike fungus, NRRL YB-4163, identified as Rhinocladiella elatior,318 produces an exopolymer composed exclusively of 2-acetamido-2-deoxy-D-glucuronic acid residues192 when grown on the medium developed195 for PS Y-6272. 

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