263358-70-9Relevant academic research and scientific papers
The trityl tetrakis(pentafluorophenyl)borate catalyzed stereoselective glycosylation using new glycosyldonor, 3,4,6-Tri-O-benzyl-2-O-p-toluoyl-β-D-glucopyranosyl phenylcarbonate
Takeuchi, Kazuya,Tamura, Takayuki,Mukaiyama, Teruaki
, p. 122 - 123 (2007/10/03)
The trityl tetrakis(pentafluorophenyl)borate [TrB(C6F5)4] catalyzed stereoselective synthesis of various disaccharides was successfully carried out by treating a new 2-O-acyl-protected glycosyl donor, 3,4,6-tri-O-benzyl-2-O-p-toluoyl-β-D-glucopyranosyl phenylcarbonate, with several glycosyl acceptors, thioglycosides, affording the corresponding disaccharides in high yields.
Stereoselective glycosylation of thioglycosides promoted by respective combinations of N-Iodo-or N-Bromosuccinimide and trityl tetrakis(pentafluorophenyl)borate. Application to one-pot sequential synthesis of trisaccharide
Takeuchi, Kazuya,Tamura, Takayuki,Mukaiyama, Teruaki
, p. 124 - 125 (2007/10/03)
New highly effective promoter system for the glycosylation of thioglycoside, the combined use of stoichiometric amount of either N-iodosuccinimide or N-bromosuccinimide and a catalytic amount of TrB(C6F5)4, was developed and was successfully applied to the one-pot sequential synthesis of trisaccharides. In the first glycosylation step, 3,4,6-tri-O-benzyl-2-O-p-toluoyl-β-D-glucopyranosyl phenylcarbonate was treated with thioglycosides in the presence of a catalytic amount of TrB(C6F5)4 alone, and the following glycosylation with methyl α-D-glycosides was carried out by further addition of either N-iodosuccinimide or N-bromosuccinimide to the initially resulted reaction mixture to afford the corresponding trisaccharides in one-pot manner.
