The stereoselective synthesis of ketoside-typeanalogues of trehalose is described. O-Glycosidation of hept-2-ulopyranose with trimethylsilyl α-pyranoside promoted by trimethylsilyl trifluoromethanesulfonate afforded α-ketopyranosyl α-aldopyranosides exclusively. α-Ketopyranosyl β-aldooyranosides and α-ketopyranosyl α-ketopyranosides were also synthesized in a similar manner. The benzyl protecting
Synthesis of 1,2-trans C-glycosyl compounds by reductive samariation of glycosyl iodides
作者:Nicolas Miquel、Gilles Doisneau、Jean-Marie Beau
DOI:10.1039/b006455f
日期:——
Reductive samariation of per-O-trimethylsilyl or
benzyl glycopyranosyl iodides in the presence of carbonyl compounds
provides the corresponding 1,2-trans-C-glycosyl compounds in good
yields.