793672-55-6Relevant academic research and scientific papers
2-: O-Benzyloxycarbonyl protected glycosyl donors: A revival of carbonate-mediated anchimeric assistance for diastereoselective glycosylation
Weber, Julia,Svatunek, Dennis,Krauter, Simon,Tegl, Gregor,Hametner, Christian,Kosma, Paul,Mikula, Hannes
supporting information, p. 12543 - 12546 (2019/10/28)
By reviving an old idea, we demonstrate that alkoxycarbonyl groups can be used in glycosylation reactions to achieve full stereocontrol through participation of a carbonate moiety at O-2. Various benzyloxycarbonyl-protected glycosyl donors were prepared and used for efficient 1,2-trans glycosylation of base-labile compounds and the synthesis of glycosyl esters.
Total synthesis of a glycoglycerolipid from Meiothermus taiwanensis through a one-pot glycosylation reaction and exploration of its immunological properties
Ghosh, Bhaswati,Lai, Yen-Hsun,Shih, Yu-Yin,Pradhan, Tapan Kumar,Lin, Chun-Hung,Mong, Kwok-Kong Tony
supporting information, p. 3191 - 3199 (2014/01/06)
The total synthesis of a glycoglycerolipid isolate of Meiothermus taiwanensis and its truncated structural analogues is reported. Our synthesis employed DMF-modulated and low-concentration glycosylation reactions for the construction of α- and β-glycosidic bonds in the absence of participating protecting groups. Further simplification of the synthesis was achieved by employing a low-concentration one-pot glycosylation procedure. Preliminary immunological studies showed that one of the truncated structural analogues suppressed the cytokine production of THP-1 monocytes. Copyright
Neighboring-group participation by C-2 ether functions in glycosylations directed by nitrile solvents
Chao, Chin-Sheng,Lin, Ching-Yu,Mulani, Shaheen,Hung, Wei-Cheng,Mong, Kwok-Kong Tony
supporting information; experimental part, p. 12193 - 12202 (2011/12/01)
Ether-protecting functions at C-2 hydroxy groups have been found to play participating roles in glycosylations when the reactions are conducted in nitrile solvent mixtures. The participation mechanism is based on intramolecular interaction between the lone electron pair of the oxygen atom of the C-2 ether function and the nitrile molecule when they are positioned in a cis configuration. A 1,2-cis glycosyl oxazolinium intermediate is formed. This participation, in conjunction with the anomeric effect of the glycosyl donor, confers high 1,2-trans selectivities on glycosylations. Further application of this concept has led to efficient preparations of α-(1→5)-arabinan oligomers.
Stereospecific synthesis of 1,2-cis glycosides by vinyl-mediated IAD
Chayajarus, Kampanart,Chambers, David J.,Chughtai, Majid J.,Fairbanks, Antony J.
, p. 3797 - 3800 (2007/10/03)
(Chemical Equation Presented) Stereospecific 1,2-cis glycosylation of 2-O-vinyl thioglycosides, synthesized from the corresponding alcohols by Ir-catalyzed transvinylation with vinyl acetate, is achieved by iodine-mediated tethering of a range of primary
