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Isosaccharic acid

The best known 2,5-anhydro hexose is that which was prepared in 1894 by Fischer and Tiemann4 and named by them chitose. Chitose is a liquid with ill-defined properties and is usually characterized by its oxidation derivatives, chitonic acid and isosaccharic acid. It is prepared by the deamination of the naturally occurring chitosamine (D-glu-cosamine). [Pg.77]

Amino-u-gluconic acid--->Chitaric acid--- Epi-isosaccharic acid. [Pg.78]

Walden inversion on C2 has occurred in one of these sequences if in the first, then chitose, chitonic acid and isosaccharic acid have the configuration of D-mannose if in the second, i. e., in the deamination of 2-amino-D-gluconic acid, then chitaric acid and epi-isosaccharic acid are... [Pg.78]

Anhydro-D-manno-saccharic acid Isosaccharic acid 185 +46.18 H,0 51, 52, 4, 110... [Pg.91]

Anhydro-D-gluco-saccharic acid Epi-isosaccharic acid 160 +39.7 HjO 111, 55,110... [Pg.91]

The hydrofuran ring in chitose and the anhydro sugar acids derived from it involves carbons 2 and 5, since isosaccharic acid when heated in hydrogen chloride gas produces furan-o ,Q -dicarboxylic acid (47) and the acetylation-dehydration of chitonic acid yields 5-acetoxymethylfuroic acid (48). [Pg.379]

See other pages where Isosaccharic acid is mentioned: [Pg.227]    [Pg.77]    [Pg.78]    [Pg.78]    [Pg.79]    [Pg.18]    [Pg.14]    [Pg.344]    [Pg.370]    [Pg.60]    [Pg.61]    [Pg.61]    [Pg.62]    [Pg.467]    [Pg.380]    [Pg.380]   
See also in sourсe #XX -- [ Pg.60 , Pg.61 , Pg.74 ]

See also in sourсe #XX -- [ Pg.60 , Pg.61 , Pg.74 ]



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Epi-isosaccharic acid

Isosaccharic acid 2,5-anhydro

Isosaccharic acid, preparation

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