Carbohydrate Chemistry: v. 7 by J.S. Brimacombe

By J.S. Brimacombe

Carbohydrate Chemistry offers overview insurance of all courses appropriate to the chemistry of monosaccharides and oligosaccharides in a given 12 months. the quantity of study during this box showing within the natural chemical literature is expanding as a result of the improved significance of the topic, specifically in parts of medicinal chemistry and biology. In no a part of the sector is that this extra obvious than within the synthesis of oligosaccharides required by way of scientists operating in glycobiology. Clycomedicinal chemistry and its reliance on carbohydrate synthesis is now rather well verified, for instance, by way of the education of particular carbohydrate- established antigens, in particular cancer-specific oligosaccharides and glycoconjugates. assurance of themes equivalent to nucleosides, amino-sugars, alditols and cyclitols additionally covers a lot learn of relevance to organic and medicinal chemistry. every one quantity of the sequence brings jointly references to all released paintings in given parts of the topic and serves as a accomplished database for the energetic learn chemist.Specialist Periodical experiences offer systematic and exact assessment insurance in significant components of chemical study. Compiled by means of groups of best professionals within the appropriate topic components, the sequence creates a special carrier for the lively learn chemist, with common, in-depth money owed of growth particularly fields of chemistry. topic assurance inside of varied volumes of a given identify is the same and e-book is on an annual or biennial foundation.

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Bethell and R. J. , 1973, 31, 69. Glycosides 15 main products of kinetic control, but pyranosides are present at equilibrium; no evidence was obtained for the presence of dimethyl acetals. The equilibrium percentages of glycosides (D-fructosides first) were as follows : a-pyranosides, 3, 92; /3-pyranosides, 46, 1 ; a-furanosides, 25, 5; and /3-furanosides, 26, 2%. ss The configuration of the free sugars at C-1 during alkylation with diazomethane is unknown, but the observed products may be derived by preferential reaction of anomeric, equatorial hydroxy-groups.

Buri, and W. Z . Hassid, Biochem. Biophys. Res. , 1973,50, 147. I. Dijong and F. , 1973, 27, 273. M. Petitou and P. , 1973, 29, 502. J. N. BeMiller and E. R. , 1972, 25, 429. C. K. de Bruyne, J. Wouters-Leysen, and M. , 1973, 29, 387. lo3 An interesting study on the relative rates of hydrolysis of methyl CX-Dglucopyranoside and the acyclic acetals (21)-(23), which are models for CH,OH components of periodate-oxidized and reduced polysaccharides, has revealed that the oxidized units should be hydrolysable under conditions that do not affect the unoxidized Compounds (21) and (23) were hydrolysed at approximately the same rate, compound (22) reacted ten times more slowly, and the relative rate of hydrolysis of the cyclic methyl glycoside was significantly slower by a factor of 2 x lo4.

1973, 30, 207. E. W. , 1973, 31, 101. D. L. Storm, R. C. Buri, and W. Z . Hassid, Biochem. Biophys. Res. , 1973,50, 147. I. Dijong and F. , 1973, 27, 273. M. Petitou and P. , 1973, 29, 502. J. N. BeMiller and E. R. , 1972, 25, 429. C. K. de Bruyne, J. Wouters-Leysen, and M. , 1973, 29, 387. lo3 An interesting study on the relative rates of hydrolysis of methyl CX-Dglucopyranoside and the acyclic acetals (21)-(23), which are models for CH,OH components of periodate-oxidized and reduced polysaccharides, has revealed that the oxidized units should be hydrolysable under conditions that do not affect the unoxidized Compounds (21) and (23) were hydrolysed at approximately the same rate, compound (22) reacted ten times more slowly, and the relative rate of hydrolysis of the cyclic methyl glycoside was significantly slower by a factor of 2 x lo4.

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