Gluconic acid, 2-amino-2-deoxy

Gluconic acid, 2-amino-2-deoxy-D-, 384 derivatives of, 181, 182 Glucopyranoses, D-, derivatives, anom-erization of, 42, 45 D-, mutarotation of, 46 methylated, from dextran, 345 —, bis(l,2,3,4-tetra-0-acetyl-/3-D-, 6-carbonate, 118... 

Deamination of 2-amino-2-deoxyaldonic acids with nitrous acid has been shown to give 2,5-anhydroaldonic acids with overall retention of the configuration of C-2. The reaction parallels the deamination, with nitrous acid, of a-amino acids that leads to a-hydroxy acids with retention of configuration.19,29 Thus, the formation of 2,5-anhydro-D-gluconic acid27 (15) from 2-amino-2-deoxy-D-gluconic acid (14) has... 

Deamination of the methyl ester (19) of 2-amino-2-deoxy-L-gluconic acid with nitrous acid gave methyl 2,5-anhydro-L-... 

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

A methoxylated polyamide 78 analogous to Nylon 6 was obtained in several steps fi om D-glucose [61, 63] through the preparation of a dimeric active ester of 6-amino-6-deoxy-2,3,4,5-tetra-(9-methyl-D-gluconic acid (49). This polyamide was highly crystalline, and gave resistant films with a spherulitic texture. 

Anhydroaldonate derivatives are formed in good yield when 2-amino-2-deoxyaldonic acids are deaminated. Thus, deamination of 2-amino-2-deoxy-L-(and D-)gluconic acid was used to form the tetra-... 

It was incorrectly stated in Ref. 6 that the methyl ester of 2-amino-2-deoxy-L-gluconic acid was used, and an incorrect structure for normusearine was given. 

During the deamination of 2-amino-2-deoxy-D-gluconic acid, it is probable that the carboxyl group is involved in a participation reaction with the carbonium cation CVIII from the side of the molecule opposite to the departing diazo group, to give an intermediate CIX with the d-manno con-... 

Clucomannan, fungal, 397 Gluconic acid, D-, lactones, 15 Glucono-1,5-lactam, 5-amino-5-deoxy-D-, 165,166... 

D-Glucosaminic acid (2-Amino-2-deoxy-D-gluconic acid)... 

Proof of the location of the methoxyl group at C3 was established by application of periodate oxidation to methyl 2-acetamido-2-deoxy-3-0-methyl-a-D-glucopyranoside and to 2-amino-2-deoxy-3-0-methyl-D-gluconic acid. The first compound was resistant to oxidation, whereas the second consumed two equivalents of periodate per mole and released one mole of formaldehyde and one mole of formic acid per mole, but afforded no ammonia. ... 

Glucofuranoside, ethyl 1-deoxy-l-thio-a-D-, 32, 39 jS anomer, 32, 39 —, methyl o,/9-d-, 25 —, methyl 3,6-anhydro-a-n-, 39 Gluconic acid, d-, 14,15 lactones of, 11,15,20,21 —, 2-amino-2-deoxy-n-, 54 ethyl ester, 56... 

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