59556-69-3Relevant articles and documents
Gold(III)-catalyzed glycosidations for 1,2- trans and 1,2- cis furanosides
Thadke, Shivaji A.,Mishra, Bijoyananda,Hotha, Srinivas
, p. 7358 - 7371 (2014/09/29)
Stereoselective synthesis of furanosides is still a daunting task, unlike the pyranosides, for which several methods exist. Herein, a unified stereoselective strategy for the synthesis of 1,2-trans and 1,2-cis furanosides is revealed for seven out of eight possible isomers of pentoses. The identified protocol gives access to diastereoselective synthesis of α- and β-araf, ribf, lyxf, and α-xylf furanosides. 1,2-trans glycosides were synthesized by the use of propargyl 1,2-orthoesters under gold-catalyzed glycosidation conditions, and subsequently, they are converted into 1,2-cis glycosides through oxidation-reduction as the key functional group transformation. All the reactions are found to be fully diastereoselective, mild, and high yielding.
Highly efficient O-glycosylations with p-tolyl thioribosides and p-TolSOTf
Kurosu, Michio,Li, Kai
supporting information; experimental part, p. 9767 - 9770 (2009/04/06)
(Chemical Equation Presented) A wide variety of p-tolyl thioriboside donors are examined for O-ribosylations of primary and secondary alcohols. p-Tolylsulfenyl trifluoromethanesulfonate (p-TolSOTf) is very effective in promoting O-ribosylations with p-tol
