151909-91-0Relevant articles and documents
NMR evidence for the participation of triflated ionic liquids in glycosylation reaction mechanisms
Rencurosi, Anna,Lay, Luigi,Russo, Giovanni,Caneva, Enrico,Poletti, Laura
, p. 903 - 908 (2006)
A systematic low-temperature NMR study of a glycosylation reaction was performed in the presence of different ionic liquids and acidic catalysts. The influence of the triflate anion derived from [emim][OTf] on the stereochemistry of the glycosylation prod
Glycosyl sulfates as glycosyl donors
Cipolla, Laura,Lay, Luigi,Nicotra, Francesco,Panza, Luigi,Russo, Giovanni
, p. 8669 - 8670 (1994)
Glycosyl sulfates are easily synthesised from tetrabenzyl pyranoses; their reaction with various acceptors promoted by Lewis acids affords glycosides and disaccharides as α,β mixtures.
Gold(III)-Catalyzed Glycosylation using Phenylpropiolate Glycosides: Phenylpropiolic Acid, An Easily Separable and Reusable Leaving Group
Shaw, Mukta,Thakur, Rima,Kumar, Amit
, p. 589 - 605 (2019/01/14)
An efficient and operationally simple gold(III)-catalyzed glycosylation protocol was developed using newly synthesized benchtop stable phenylpropiolate glycosyl (PPG) donors. Gold(III)-catalyzed activation of PPGs proceeds well with various carbohydrate a
REAGENTS AND METHODS FOR GLYCOSYLATION
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, (2018/03/09)
The invention provides methods and regents for the glycosylation of organic molecules. In one aspect, the invention provides a method for glycosylating a hydroxyl-containing organic compound (i.e., a glycosyl acceptor) comprising contacting a glycosyl don
Electron-deficient pyridinium salts/thiourea cooperative catalyzed O-glycosylation via activation of O-glycosyl trichloroacetimidate donors
Shaw, Mukta,Kumar, Yogesh,Thakur, Rima,Kumar, Amit
supporting information, p. 2385 - 2395 (2017/11/16)
The glycosylation of O-glycosyl trichloroacetimidate donors using a synergistic catalytic system of electron-deficient pyridinium salts/aryl thiourea derivatives at room temperature is demonstrated. The acidity of the adduct formed by the 1, 2-addition of
Photo-induced glycosylation using reusable organophotoacids
Iwata, Ryosuke,Uda, Kanjiro,Takahashi, Daisuke,Toshima, Kazunobu
supporting information, p. 10695 - 10698 (2014/09/30)
The glycosylation reactions of glycosyl trichloroacetimidates and several alcohols using an organophotoacid as an activator under photoirradiation proceeded smoothly to give the corresponding glycosides in high yields. The organophotoacid was recovered and reused without any loss of efficiency. This journal is the Partner Organisations 2014.
Cooperative catalysis in glycosidation reactions with o-glycosyl trichloroacetimidates as glycosyl donors
Geng, Yiqun,Kumar, Amit,Faidallah, Hassan M.,Albar, Hassan A.,Mhkalid, Ibrahim A.,Schmidt, Richard R.
, p. 10089 - 10092 (2013/10/01)
Thiourea mediates cooperative glycosidation through hydrogen bonding. N,N′-Diarylthiourea as cocatalyst enforces an SN2-type acid-catalyzed glycosidation even at room temperature (see scheme; Bn=benzyl). From O-(α-glycosyl) trichloroacetimidates as glycosyl donors and various acceptors, β-glycosides are preferentially or exclusively obtained.
Glycoside bond formation via acid-base catalysis
Kumar, Amit,Kumar, Vipin,Dere, Ravindra T.,Schmidt, Richard R.
supporting information; experimental part, p. 3612 - 3615 (2011/09/14)
Acid-base catalyzed glycosyl donor and then glycosyl acceptor activation with phenylboron difluoride or diphenylboron fluoride permits hydrogen bond mediated intramolecular SN2-type glycosidation in generally high anomeric selectivity.
Glycosyl trichloroacetylcarbamate: A new glycosyl donor for O-glycosylation
Jayakanthan,Vankar, Yashwant D.
, p. 2688 - 2692 (2007/10/03)
Glycosyl trichloroacetylcarbamates, readily obtained by reacting 1-hydroxy sugars with trichloroacetylisocyanate, have been found as excellent glycosyl donors, and the corresponding O-glycosides are formed in good to excellent yields with a fairly good degree of selectivity.
Glycosylation with trichloroacetimidates in ionic liquids: Influence of the reaction medium on the stereochemical outcome
Rencurosi, Anna,Lay, Luigi,Russo, Giovanni,Caneva, Enrico,Poletti, Laura
, p. 7765 - 7768 (2007/10/03)
The glycosylation with trichloroacetimidates derived from different glycopyranoses bearing a nonparticipating group at C-2 was explored in different ionic liquids as solvents. The stereoselectivity of the reaction was significantly affected by the reactio