1,3-Dideoxynojirimycin-3-yl glycosides of β-(1→3)- and β-(1→6)-linked gluco-oligosaccharides
作者:Regine Blattner、Richard H. Furneaux、Zbigniew Pakulski
DOI:10.1016/j.carres.2006.05.004
日期:2006.9
glycosyl trichloroacetimidates as glycosylating agents were used to prepare the five 1,3-dideoxynojirimycin-3-yl β-(1→3)-linked oligo-glucosides ( 1 – 5) and also the β-(1→6)-bonded glucobiose (gentiobiose)-based analogue 6 as potential fungicides. In the course of the work, the β-(1→6), β-(1→6)-linked analogue 8 of 6 and 6- O - and 4- O -β-glucopyranosyl-deoxynojirimycins 7 and 9 , respectively, were also
Abstract 1-Deoxynojirimycin ( 1 ) is a potent inhibitor of mammalian and riceα-glucosidase. Several glucosides of 1 were synthesized by use of the native and immobilizedenzyme and their effect on various enzymes was investigated. Transglucosylation reactions usingriceα-glucosidase, yeast α- and β-glucosidases purified from Rhodotorula lactosa were performed with maltose or cellobiose as a glucose
Simple syntheses of 4-O-glucosylated 1-deoxynojirimycins from maltose and cellobiose
作者:Andreas J. Steiner、Arnold E. Stütz
DOI:10.1016/j.carres.2004.07.022
日期:2004.10
Glucosidase inhibitors alpha-D-glucopyranosyl-(1-->4)-1-deoxynojirimycin and beta-D-glucopyranosyl-(1-->4)-1-deoxynojirimycin were prepared from maltose and cellobiose, respectively, via the corresponding 5,6-eno derivatives, their epoxidation and the subsequent double reductive amination of the resulting 5-uloses. In both cases, the reported route is the first chemical synthesis not based on enzymatic