L-Xylonic acid

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

Anhydro-L-xylose, characterized as the benzimidazole derivative formed from the corresponding 2,5-anhydro-L-xylonic acid and o-phenylenediamine, has likewise been prepared92 by the action of one molar equivalent of periodic acid on 1,4-anhydro-D-glucitol. 

A synthesis of L-sorbose by the diazomethane reaction on 2,4 3,5-diethylidene-L-xylonyl chloride (XXX) was performed by Gatzi and Reichstein.54 Oxidation of 3,5 4,6-diethylidene-L-gulitol (l,3 2,4-dieth-ylidene-D-glucitol) (XXVIII) gave the diethylidene-L-xylonic acid (XXIX). Addition of diazomethane to the acid chloride (XXX) yielded a sirupy diazoketone (XXXI) from which L-sorbose (XXXII) was obtained by acid hydrolysis with dilute sulfuric acid. 

Two papers have thrown light on the finer structure of Appel s diacetal. First, Gatzi and Reichstein141 oxidized it with potassium permanganate in alkaline solution and obtained a diethylidene-L-xylonic acid, together with a monoethylidene-L-threonic acid. The ethylidene group in the latter compound was shown to span positions 2 and 4, from which they concluded that the parent diacetal was 1,3 -diethylidene-D-sorbitol (XXXI). Secondly, Bourne and Wiggins117 hydrolyzed the... 

The acyclic alkene (27) was produced amongst the compounds formed by benzoylation of L-sorbose at room temperature with benzoyl chloride in pyridine on ozonolysis it gave 2,3,4,5-tetra-O-benzoyl-L-xylonic acid. The diene (28) is a product of base-catalysed acetylation of Dmannuronolactone. ... 

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... 

Kanfer, J., Ashwell, G., Burns, J.J. Formation of L-lyxonic and L-xylonic acids from L-ascorbic acid in rat kidney. J. biol. Chem. 235, 2518-2521 (1960)... 

When relatively few functional groups are free, it is sometimes possible to use alkaline permanganate for the oxidation of specific groupings. l,2 3,4-Di-0-isopropylidenegalactose can be oxidized (264) to the corresponding uronic acid. 3-0-Methyl-L-xylonic acid is obtained from 1,2-0-isopropylidene-3-O-methyl-D-glucofuranose by permanganate oxidation and subsequent reduction of the xyluronic acid (265). 

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