Carbohydrate ethers

Carbohydrate ethers, particularly methyl ethers, constitute an important class of compounds. The value of methylation studies in the structural determination of sugars is well known. The 6-, 6 -, and 3-methyl ethers of phenyl a-maltoside were needed for study of their... 

Glycosides are carbohydrate ethers that are readily hydrolysable in hot water or weak acids. Most frequently, they contain glucose and are named by designating the attached alkyl group first and replacing the -ose ending of the sugar with -oside. 

Lignin condensation reactions include the formation of diphenylmethanes (57) and (52) and a-carbohydrate ether linkage (55) that may be derived from the quinonemethide (42) [32,277,336-340] or the epoxide (49) [342,343] intermediate. Coniferyl alcohol may be involved in the formation of p-7-linked condensed unit (54) [338,339]. 

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The facial discrimination of the asymmetric epoxidation of allyl alcohols follows die empirical rule given in Figure 7 JO in nearly all die cases examined. However, exceptions have been observed with dialkenyl glycols [1382, 1383]. Due to the efficiency of the Sharpless epoxidation, the use of chiral auxiliaries for the epoxidation of allylic alcohols is not generally required. However, Charette and Cdte performed the epoxidation of carbohydrate ethers of allyl alcohols with MCPBA and observed a good stereoselectivity (80%) [369],... 

C-Probond9E. [Chemurgy Prods.] Carbohydrate ether finishing agent, hand builder for textiles. 

Carbohydrate ethers can also be obtained from alkyl halides and the sodium derivatives of carbohydrates. The alkali derivatives can be prepared by treating the sugar or a derivative thereof with sodium in liquid ammonia, ether, or dioxan. 

Hydroxyl (COH), carbohydrate Ether (COC), carbohydrate Phenol (ArOH), AA Sulfonate (50 )... 

Transglycosidation Glycosideacetals, unsatd. 19, 225 Glycosides (s. a. Carbohydrates, Ethers, Thioglycosides)... 

Catalytic heterogeneous processes for carbohydrate ethers formation via intermolecular dehydration from alcohols and carbohydrates... 

There are four types of carbohydrate ethers that are commonly formed. Each has a specific function in structural or synthetic carbohydrate chemistry. 

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