309261-86-7Relevant academic research and scientific papers
Aqueous Glycosylation of Unprotected Sucrose Employing Glycosyl Fluorides in the Presence of Calcium Ion and Trimethylamine
Pelletier, Guillaume,Zwicker, Aaron,Allen, C. Liana,Schepartz, Alanna,Miller, Scott J.
, p. 3175 - 3182 (2016/03/19)
We report a synthetic glycosylation reaction between sucrosyl acceptors and glycosyl fluoride donors to yield the derived trisaccharides. This reaction proceeds at room temperature in an aqueous solvent mixture. Calcium salts and a tertiary amine base promote the reaction with high site-selectivity for either the 3′-position or 1′-position of the fructofuranoside unit. Because nonenzymatic aqueous oligosaccharide syntheses are underdeveloped, mechanistic studies were carried out in order to identify the origin of the selectivity, which we hypothesized was related to the structure of the hydroxyl group array in sucrose. The solution conformation of various monodeoxysucrose analogs revealed the co-operative nature of the hydroxyl groups in mediating both this aqueous glycosyl bond-forming reaction and the site-selectivity at the same time.
Preparation of sucrose heptaesters unsubstituted at the C-1 hydroxy group of the fructose moiety via selective O-desilylation
Barros, M. Teresa,Maycock, Christopher D.,Thomassigny, Christine
, p. 419 - 423 (2007/10/03)
Selective O-desilylation of 6,1',6'-tri-O-tert-butyldiphenylsilyl- 2,3,4,3',4'-penta-O-benzoylsucrose with hydrofluoric acid in acetonitrile led to the 1'-O-tert-butyldiphenylsilyl derivative (96% yield), which was further perbenzoylated and deprotected at OH-1' with tetrabutylammonium fluoride (86%). An analogous sequence with the corresponding O-acetylated sucrose derivative and tetrabutylammonium fluoride as desilylating agent resulted in a lower yield of the C-1' hydroxy derivative. (C) 2000 Elsevier Science Ltd.
Synthesis and glycosylation of thio-D-fructofuranoside donors
Li, Yun-Long,Wu, Yu-Lin
, p. 7413 - 7416 (2007/10/03)
Two ethyl thioglycosides of D-fructofuranose 4a and 4b, synthesized from D-arabinose and differentially protected at position 1 and 6, react with bulky acceptors in the presence of IDCP giving only α-fructofuranosides in essentially quantitative yields.
