D-Glucopyranosyl moiety

Stoodley developed an asymmetric synthesis of (5A)-2,3,4,5-tetrahydropyridazine-3-carboxylic acid (see Section 8.01.6.4). The ring construction was achieved via cycloaddition of dienes 295 bearing a tetraacetyl /3-D-glucopyranosyl moiety for chiral induction with azodicarboxylates (Equation 73) <1999J(P1)2591>. 

Dextransucrase, which characteristically converts sucrose to dextran plus D-fructose, is capable of acting similarly on certain other oligosaccharides.63 1 However, this range of substrates does not include plante-ose, even though planteose has an unsubstituted a-D-glucopyranosyl moiety. 

Substituent at C2 (and on hydroxyl groups) of 2-deoxy-D-glucopyranosyl moiety. 2. -jj K g St- C - 4 Amino moiety at Cl Melting point, (all), degrees Rota- tion sol- vent References... 

Page 10, Fig. 2. Although this Figure was reproduced from the literature, the /S-D-glucopyranosyl moiety is erroneously depicted as its mirror image, namely, the jS-L-glucopyranosyl group. 

Role of D-glucopyranosyl moiety in the pharmacological activity of Deltorphin C and dermorphin. 

It has been suggested by de Robichon-Szulmajster tj at uridine 5-(a-D-glucopyranosyl pyrophosphate) assumes, without strain, a folded conformation in which the pyrimidine residue is located in close proximity to the a-D-glucopyranosyl moiety and actually participates in the epimerase reaction. The ability of glycosyl nucleotides to assume such a conformation may help to account for the large number of interconversions which these compounds are able to undergo. 

Methyl Ethers.- Ollgoglycoslde dlterpenes with 3- -methylated a-L-rhamnopyranosyl, 3-D-qulnovopyranosyl, and 3-D-glucopyranosyl moieties have been isolated from Scypholepia hookeriana fronds. ... 

Steroid glycosides with 2-acetamldo-2-deoxy-3-D-glucopyranosyl moieties have been Isolated from.fruit pulp of the Nigerian plant... 

Methyl and Trlfluoromethyl Ethers.- Echinoslde A, an antifungal trlterpene tetrasaccharide isolated from a sea cucumber, has a 3-0-methyl-g-D-glucopyranosyl moiety at the non-reducing terminus. Crossasteroside, a steroidal glycoside from the starfish Crossaster... 

The 2-acetamido-2-deoxy-p-D-glucopyranosyl moiety is a common link between oligosaccharide and polypeptide components [83], and to pursue this link, the phthalimido protected NPG 63 was tested as a starting material. Acetonitrile, propionitrile, and p-methoxybenzonitrile gave good yields of p-glycopeptides 65a,b and c, respectively, consistent with the intermediacy of the corresponding nitrilium ions 64a,b and c (Scheme 10b). 

Glucosinolates are thioglucosides. They contain a C=N-group substituted with sulfate and a residue R in anti position, as well as a sulfur atom connected with a /3-D-glucopyranosyl moiety (Table 44). At hydrolysis they liberate glucose, sulfate and an unstable aglycon. From the latter isothiocyanates (mustard oils), thiocyanates, nitriles, or cyanoepithioalkanes may be formed. 

A 2-acetamido-2-deoxy-P-D-glucopyranosyl moiety, rarely found as a plant component, is a constituent of a saponin from Albizzia julibrissin stem bark. Kedarcidin, a new chromoprotein anti-tiunour fermentation product of the enediyne class contains the novel amino sugar kedarosamine (2,4,6-trideoxy-4-dimethylamino-L-arflh/no-hexopyranose), isolated as its methyl glycoside. A microscale chromatographic analytical method for A-acetylneuraminic acid in glycoproteins is covered in Chapter 23. 

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