Altrose 6-deoxy

Figure 4 Proposed biosynthetic pathway of pseudaminic acid in Campylobacter. The predicted activity of PseF (last step) is based on the homology to the corresponding enzyme (NeuA) in the sialic acid biosynthetic pathway. Pse, pseudaminic acid (5,7-diacetamido-3,5,7,9-tetradeoxy-L-glycero-L-manno nonulosonic acid) Alt, altrose 6-deoxy-AltdiNAc, 2,4-diacetamido-2,4,6-trideoxy-L-Alt.

Ionophoresis of Carbohydrates. Part VII. 2,5-Di-O-methyl-L-rhamnose Its Ionophoresis and Conversion into 6-Deoxy-2 5-di-0-methyl-L-altrose, A. B. Foster, J. Lehmann, and M. Stacey, /. Chem. Soc., (1961)4649-4653. 

A. C. Richardson and H. O. L. Fischer, Cyclization of dialdehydes with nitromethane, Part VI. Preparation of 3- amino-1,6-anhydro-3-deoxy-p-D-gulose, -P-D-altrose and -p-D-idose derivatives and their characterization by means of inversion of mesyloxy groups,./. Am. Chem. Soc., 83 (1961) 1132-1139. 

Deoxyketoses are of rare natural occurrence. The antibiotic hygromycin177 has been shown to contain 6-deoxy-D-arabmo-hexos-a-ulose residues, since reduction of the free sugar gave 6-deoxy-D-altrose and L-fucose. Yungsten and coworkers171 reported the isolation of a 6-deoxy-L-x2/io-hexulose (an-gustose) from the antibiotic Angustmycin A, for which structure (37) was proposed. 

Gross and Oriez125 reported the synthesis of 4-S-acetyl-6-deoxy-4-thio-D-altrose (302) and 4-S-acetyl-6-deoxy-4-thio-D-idose (303) by using, as starting materials, the corresponding thiocyanates prepared in 35% yield from the 4-O-mesyl derivatives 298 and 299 by Sn2 displacement with thio-... 

Such a situation is rather common for D-galactose and the structurally related monosaccharides L-arabinose218 and D-fucose thus far, the latter monosaccharide has been identified only as the furanose form in the O-specific polysaccharide of Eubacterium saburreum.219 6-Deoxy-L-altrose is present as the pyranose in the lipopolysaccharide of Yersinia enteroco-litica,20 but as the furanose in a similar polymer220 of Y. pseudotuberculosis type VB. Paratose, which is usually present in polysaccharides as the a-pyranose, was identified as the /3-furanose in the O-specific polysaccharide221,222 of Y. pseudotuberculosis serotype IB. 

Anhydro-3,4-O-isopropylidene-2-O-toayl-/3-D-altrose Methyl 2,0-dideoxy-3-O-methyl-4-O-tosyl-a-D-xylo-hexoside Methyl 2,6-dideoxy-3-0-methyl-4-0-tosyl-/3-D- ct/lo-hexoside 0-Deoxy-2,3-O-isopropylidene-l-O-tosyl-L-sorhose 2,4 3,5-Di-0-methylene-l-0-tosyl-D-epirhamnitol... 

The attachment of the dansyl unit to the secondary site of CD can also be accomplished by Hamasaki et al. [45], They examined the fluorescence properties of 33, 34,35, and 36, in which the dansyl moiety is attached to the secondary site (C3) of CD [43], Because the preparation of 3-deoxy-3-amino-CDs involves the inversion reaction at C3 that results in the conversion of one glucose member to an altrose residue, the modified CDs derived from 3-deoxy-3-amino-CDs have a distorted cavity with a decreased cavity space. As a result, (3-CD derivatives 33 and 34 cannot act as a fluorescence sensor, exhibiting fluorescence peaks at 580... 

Mycaminose has been found as a component of carbomycin (Magna-mycin)83 and, structurally, it resembles desosamine84 (see Table II). On periodate oxidation, one carbon atom is split out, to yield a seven-carbon amino sugar the results of subsequent reaction with the oxidant indicated the presence of a hydroxyl group at C4. Alkaline deamination of the seven-carbon sugar proceeded at a rate similar to that of 2-amino-2-deoxy-D-glucose, whereas mycaminose itself reacted far more rapidly this indicates the dimethylamino group to be at C3. Mycaminose is believed to be 3,6-dideoxy-3-dimethylamino-/3-D-altrose.84a... 

Altropyranoside, methyl 4,6-0-benzyli-dene-3-O-methyl-a-n-, 140 Altrose, 2-amino-2-deoxy-D-, derivatives of, 191... 

An investigation by paper chromatograi y of the products of hydrolysis of a mixed polysaccharide 28) indicated that the mixed poly-s charide contained, in addition to ucose units, repeating units of four amino sugars, two of which were identified as 3-deoxy-3-amino-altrose and 2-deoxy-2-aminoglucose. The 3-aminoaltrose formed was found to be 80% of the total amino sugar content of the hydrolysate. 

C6H1206 D-altrose 1990-29-0 20.90 1.5817 2 8858 C6H13N07 1-deoxy-1-nitro-L-mannitol 6027-42-5 25.00 1.2959 2... 

Gross, B, Oriez, F X, Synthesis for the 6-deoxy-4-thio-D-altrose and -D-idose series, Carbohydr. Res., 36, 385-391, 1974. 

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