α-Selective glycosidation of d-tagatofuranose with a 3,4-O-isopropylidene protection

Stereoselective synthesis of (+)-5-thiosucrose and (+)-5-thioisosucrose

“…Considering that d -psicofuranosylation of the corresponding α- d -glucose gave a mixture in the ratio of 2 : 1 (α-glucopyranoside vs. β-glucopyranoside), 19 it should be noted that the predominant selectivity for 5-thio- d -glucopyranose 6 vs. d -glucopyranose is quite interesting in psicofuranosylation of 5-thiopyranose and pyranose donors. 26…”