D-Maltose

Fig. 7 Compounds obtained from D-mannose (11), D-galactose (12), D-maltose (49), and D-cellobiose (50)...

In order to prepare carbohydrate-based amphiphiles by this efficient methodol-ogy, symmetrical p-diketones 63a, b were used [111]. The reactions of these diketones with o-glucose (10) in EtOH/H20 as the solvent and NaHC03 as the base were complete and the C-glycolipids were isolated in 75% (64a) and 52% yield (64b) using the less soluble diketone 63b. The condensation was also applied to D-maltose (49) to obtain 65a or 65b (Fig. 11) [111, 121]. 

Rasmussen et al. [83] have described the calculation of 3-D-maltose using the PEF300. They obtained four minima within 5 kcal/mol characterized by the angles cp/ / of —21°/—24° (0.4 kcal/mol), 17719° (1.0 kcal/mol), -667- 43° (1.5 kcal/mol), and —29°/—168° (2.0 kcal/mol). The energetically most favored and that with the highest energy correlate quite well with the calculation by Tvaroska [82] mentioned above. 

D-glucose, D-maltose, D-glucoheptose, 3-O-methyl-D-glucose D-glucose, D-maltose, D-glucoheptose, 3-O-methyl-D-glucose... 

Bell et al. (1993) showed vibrational Raman optical activity of the carbohydrates D-galactose, D-maltose and laminarin at low wavenumbers. The authors observed a ROA couplet at 427 10 cm which, according to their opinion, reflects the configuration of the glycosidic links in complex carbohydrates. 

SYNS 4-(a-d-GLUCOPYRANOSIDO)-a-GLUCOPYRAN-OSE 4-(a-d-GLUCOSIDO)-d-GLUCOSE MALTOBI-OSE d-MALTOSE MALT SUGAR a-MALT SUGAR... 

It has been found that S-tert-butyl-P-phenyl-l-piperidinyl phos-phonamidothioate (378) served as a novel thermally latent anionic initiator in the polymerization of glycidyl phenyl ether. Novel porphyrin phosphonates (379), (380) and (381) exhibit binding of alkyl pyranosides in organic media (receptor 379), monosaccharides, selected disaccharides in water (receptors 380 and 381), and effective binding for D-(-) fructose, D-( + ) maltose and a-D-lactose. ... 

D) Maltose and cellobiose are geometrical isomers of each other. 

Fig. 2.—Curves of Rate against Temperature. (A, maltose B, maltitol C, maltose phenylosotriazole D, maltose cyanohydrin E, maltobionic acid F, maltose 1-phenyl-flavazole.)...

The microorganism was grown in mineral medium supplemented with 1.0 to 10.0 g/L of the earbon source and also in a mineral medium with oat spelt xylan or D-maltose, with the addition of glucose or xylose. Samples were collected from the culture and centrifuged at... 

Fig. 1 Effect of carbon sources concentration on xylanase production by B. circulans Dl, after 48 h of cultivation. Oat spelt xylan (squares) D-maltose (circles) D-galactose (triangles) D-glicose (inverted triangles) D-cellobiose (diamonds) D-arabinose (plus signs)...

S Additional information <1-3, 5, 6, 7, 9> (<1, 3> D-fructose, D-mannose, D-maltose, D-galactose, N-acetyl-D-galactosamine, N-acetyl-D-mannosamine do not serve as substrates [1, 3] <2> N-methyl-D-glucosamine, D-glucosamine, N-acetyl-D-galactosamine, N-acetyl-D-mannosamine do not... 

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