Author/Authors :
Polina I. Abronina، نويسنده , , Polina I. and Sedinkin، نويسنده , , Sergey L. and Podvalnyy، نويسنده , , Nikita M. and Fedina، نويسنده , , Ksenia G. and Zinin، نويسنده , , Alexander I. and Torgov، نويسنده , , Vladimir I. and Kononov، نويسنده , , Leonid O.، نويسنده ,
Abstract :
Orthoester-linked d-arabinofuranose oligosaccharides were isolated in high yield for the first time via glycosylations with 2-O-chloroacetyl-substituded d-arabinofuranose thioglycosides promoted by NIS–AgOTf in the presence of 4 Å molecular sieves in CH2Cl2. These orthoesters can be rearranged into the isomeric glycosidically-linked oligosaccharides by treatment with TMSOTf in CH2Cl2, or in situ by extension of the reaction time.
Keywords :
glycosylation , Arabinofuranose , Orthoester , Isomerization , Glycoside
