Xylonic acid, 2-deoxy

R" = -H, 5-0-carbamoyl-2-amino-2-deoxy-L-xylonic acid or the 3-deoxy derivative... 

The same group described the syntheses of some derivatives of 5-amino-5-deoxy-L-arabmonic acid, 5-amino-5-deoxy-D-xylonic acid, and (S)-5-amino-4-hydroxypentanoic acid, which wa-e paformed in sevraal steps from L-arabinose, D-xylose, and (S)-(-l-)-glutaniic acid, respectively [119], These monomers wctc polymerized to give methoxylated homo and copolyamides analogous to Nylon 5 [120, 121]. 

S,3S,4S)-fomt 2-Amino-2-deoxy-L-xylonic acid, 9CI, SCI. Polyoxandc acid [19396-04-4]... 

Carbamate 2-Amino-5-0-carbamoyl-2-deoxy-L-xylonic acid. 5-O-Carbamoyl-polyoxamic acid [19396-05-5]... 

Amino-2-deoxy-3,4,5,6-tetra-0-methyl-D-gluconic add, A-218 2-Amino-2-deoxy-5-thioallose T>-fomv, N-Ac, A-343 2-Amino-2-deoxy-3,4,6-tri-0-methyl-a-i>galactopyranose, A-206 2-Amino-2-deoxy-3,4,6-tri-0-methyl-i>gluconic acid, A-218 2-Amino-2-deoxy-L-xylonic acid, 9CI, SCI, A-469 2-Amino-2-deoxy-D-xylonic add, A-469 2-Amino-2-deoxyxylose a.-T>-form, A-356 2-Amino-2-deoxyxylose a.-. -form, A-356 2-Amino-2-deoxyxylose, A-356... 

Amino-5-0-carbamoyl-2-deoxy-L-xylonic acid, A-469 5-Amino-5-deoxy-D-arabino-l,5-lactam, T-177 2-Amino-2-deoxy-D-arabinonic acid, A-469 2-Amino-2-deoxy-L-arabinonic acid, A-469 2-Amino-2-deoxy-l,4-arabinonolactone D-form, A-177 2-Amino-2-deoxygluconic acid D-form-, Me ester, A-218... 

Amino-S-deoxy-D-xylono-l,5-lactam, T-177 2-Ammo-2,3,5-trideoxy-3-metliyl-L-arabinoiiic acid, A-427 2-Ammo-2,3,5-trideoxy-3-methyl-D-arabinonic acid, A-427 2-Ammo-2,3,5-trideoxy-3-methyl-D-lyxonic add, A-427 2-Amino-2,3,5-trideoxy-3-methyl-L-ribonic acid, A-427 2-Amino-2,3,5-trideoxy-3-methyl-D-xylonic acid, A-427... 

The 2-keto-3-deoxy-aldonic acid (phosphate) aldolases from Pseudomonas strains - 3-deoxy-2-keto-L-arabonate (F.C 4.1.2.18), 3-deoxy-2-keto-D-xylonate (EC 4.1.2.28), 3-deoxy-2-keto-6-phospho-D-gluconate (EC 4.1.2.14) and 3-deoxy-2-keto-6-phospho-D-galactonate aldolase (EC 4.1.2.21) - appear to be specific even for the acceptor components, but allow stereoselective syntheses of the respective natural substrates29. 

Procedure Synthesis of Xylonic, Galactonic, Mannonic, 2-Deoxygluconic Acid and Synthesis of 2-Amino-2-deoxy-gluconic Acid (Glucosaminic Acid)... 

Comparable to the situation for the sialic acid and KDO lyases (vide supra), sets of stereochemically complementary pyruvate lyases are known, e,g. in Pseudomonas strains, which act on related 2-keto-3-deoxy-aldonic acids [112]. The enzymes cleaving six-carbon sugar acid phosphates—the KdgA and 2-keto-3-deoxy-6-phospho-D-galactonate (20) aldolases (KDPGal aldolase EC 4.1.2.21) [139] — are typified as class I enzymes, whereas those acting on non-phosphorylated five-carbon substrates — 2-keto-3-deoxy-L-arabonate (21) (KDAra aldolase EC 4.1.2,18) [140, 141] and 2-keto-3-deoxy-D-xylonate (22)... 

From 3-0-methyl-D-xylose are formed the two analogous five-carbon metasaccharinates. The main component of the reaction mixture is 3-deoxy-D- ljrxonate, although small amounts of 3-deoxy-D- xylonate are also found. Furthermore, 3-0-a-D-xylopyranosyl-L-arabinose is degraded, in lime water, to an acid salt and n-xylose. Alkaline degradation of 3-0-... 

Derivatives of 5-amino-5-deoxy-L-arabinonic (58) and o-xylonic (59) acids were prepared from the respective per-O-methyl aldono-1,5-lactones (56 and 57). Opening of the lactone by alcoholysis followed by tosylation of... 

D-xylonate, respectively. Degradation of the chain also occurs to some degree when 2-deoxy-DTflraimo-hexose is treated with alkaline hydrogen peroxide, and D-arabinitol is produced together with 2-deoxy-DTflraZ mo-hexonic acid. A secondary process leads to the production of formic acid. ... 

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