173725-22-9Relevant articles and documents
Direct chemical glycosylation with pentenyl- and thioglycoside donors of N-acetylglucosamine
Krag, Jonas,Christiansen, Mira S.,Petersen, Jette G.,Jensen, Henrik H.
experimental part, p. 872 - 879 (2010/06/19)
The use of pentenyl and thiophenyl glycosides of N-acetylglucosamine (GlcNAc) as glycosyl donors for the direct preparation of O-glycosides of GlcNAc promoted by N-iodosuccinimide (NIS) and metal triflates in dichloromethane has been investigated. Both glycosyl acceptors 1-octanol and (-)-menthol resulted in good glycosylation yields for both types of donors with pentenyl glycosides being somewhat superior in terms of yield. Carbohydrate-based acceptors were reacted with a benzylated GlcNAc-pentenyl donor but only provided disaccharides in poor to moderate yields. The results show that a variety of metal triflates are capable of acting as an activator for both NIS and the intermediate oxazoline.
N-ACETYLGLUCOSAMINE DERIVATIVES AND USE THEREOF
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Page/Page column 15, (2010/02/12)
The present invention relates to An N-acetylglucosamine derivative represented by the following formula (1), and a hyaluronic acid production promoting agent containing the same and a skin external preparation containing the same: wherein R1 is a hydrogen atom or an alkyl group having 2 to 18 carbon atoms; R2, R3, and R4 are hydrogen atoms or acyl groups having 2 to 18 carbon atoms and may be all the same or different from others; the steric structure at position 1 may be α or β; provided that R1, R2, R3, and R4 must not be all hydrogen atoms. It is intended to provide an easily available hyaluronic acid production promoting agent and a skin external preparation whereby the production of hyaluronic acid can be promoted in the skin and thus the skin can be maintained in a vital and moist state so that it is expected that the human skin can be prevented from age.
The synthesis of glycosides of 2-acetamido-2-deoxyglucose catalyzed by mercuric iodide
Zemlyakov,Kur'yanov,Sidorova,Chirva
, p. 551 - 558 (2007/10/03)
The glycosylation of various alcohols with peracetylated α-D-glucosaminyl chloride catalyzed with mercuric iodide was studied along with the dependence of the reaction course on temperature, solvent, and quantity of catalyst. At room temperature, only β-glycosides of peracetylated N-acetylglucosamine were shown to result in dichloroethane or nitromethane with high yields. At 90-95°C, anomerization was observed, which led to the corresponding α-glycosides. The possibility of the synthesis of disaccharides with the β1→6 bond catalyzed by mercuric iodide was demonstrated.