0-Gentiobiose, 12-

When the first calculations were made, there were essentially no experimental data available for comparison. Due to the very flexible glycosidic linkage, many minima were found, certainly not all, hopefully all those of low energy. For the same reason, it is difficult to make a good crystal. 

The only experimental data to compare with came from the NMR stu- 

In their comparison with our calculations, they cited one con- 

In order to see what changes the removal of the modelling of hydrogen bonds inherent in PEP400 would bring about, I repeated all 

A closer inspection of the results of the PEF300 minimisation revealed that altogether eight conformers are found within 10 kJmol , all having the same order of the two crucial H-------H dis- 

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The coloring principles of saffron are crocin [42553-65-1] and crocetin [27876-94-4J. Crocin is the gentiobiose diester of crocetin (44)... 

Some of the original work in the carbohydrate area in particular reveals extensive protection of carbonyl and hydroxyl groups. For example, a cyclic diacetonide of glucose was selectively cleaved to the monoacetonide. A summary describes the selective protection of primary and secondary hydroxyl groups in a synthesis of gentiobiose, carried out in the 1870s, as triphenylmethyl ethers. 

The dye molecule in saffron is the carotenoid beta-gentiobiose crocetin. It is related to beta-carotene, and you can see the relationship in the center of the molecule. That center portion is the carotenoid pigment crocetin ... 

On either side of the crocetin molecule is a disaccharide molecule called beta-gentiobiose, and the result is the molecule that gives saffron its yellow color. 

Fourteen DFAs and some oligomers were identified in caramel obtained by thermal treatment of inufin. - Monosaccharides (glucose, fructose), dehydration products (1,6-anhydro-p-D-glucopyranose, 1,6-anhydro-p-D-glucofuranose), disaccharides (gentiobiose and isomaltose), and oligosaccharides were also found in glucose and sucrose caramel. ... 

C12H22On 6-0-/ -D-Glucopyranosyl-/ -D-glucopyranose, gentiobiose (GENTBS01),71 (GENTBS)72... 

The naturally-occurring 1,6-linked glucose polymers furnish other sources of 2,3,4-trimethyl-D-glucose, which has been isolated from the hydrolysis products of the methyl ethers of gentiobiose,112 118 melibiose,114 raffmose106 116 and dextran.78 74,116... 

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