143206-84-2Relevant academic research and scientific papers
Zeolite-catalyzed Helferich-type glycosylation of long-chain alcohols. Synthesis of acetylated alkyl 1,2-trans glycopyranosides and alkyl 1,2-cis C2-hydroxy-glycopyranosides
Aich, Udayanath,Loganathan, Duraikkannu
, p. 704 - 709 (2007)
Zeolite-catalyzed glycosylation of long-chain alcohols, using the inexpensive and readily available peracetylated β-d-gluco- and galactopyranoses as glycosyl donors under solvent free conditions, has been explored for the first time. Among the various forms (H-, Na-, Fe- and Zn) of β zeolite examined as catalysts in the reaction of 1,2,3,4,6-penta-O-acetyl-β-d-galactopyranose with cetyl alcohol, Fe-β zeolite gave the maximum yield of 63% of cetyl 2,3,4,6-tetra-O-acetyl-β-d-galactopyranoside and cetyl 3,4,6-tri-O-acetyl-α-d-galactopyranoside. Fe-β Zeolite-catalyzed glycosylation was found to be general affording the title compounds in each case in a moderate yield, but with a good stereoselectivity. The yield of synthetically valuable acetylated long-chain alkyl 1,2-cis C2-hydroxy-glycopyranosides obtained in the present single-step procedure is considerably higher than that of the previously reported multi-step method employing the Stork silicon tether approach.
BF3 etherate-induced formation of C7-C 16-alkyl β-D-glucopyranosides
Petrovic, Zorica,Konstantinovic, Stanimir,Spasojevic, Aleksandra
, p. 132 - 134 (2007/10/03)
BF3 etherate-induced formation of C7-C 16-alkyl D-glucopyranosides is used as the key step in their synthesis from glucose and C7-C16-alkanols.
