G. Rubinstenn et al., RADICAL-MEDIATED SYNTHESIS OF N-ACETYL-D-GALACTOSAMINE CONTAINING C-DISACCHARIDES VIA A TEMPORARY PHOSPHORAMIDIC CONNECTION, Tetrahedron : asymmetry, 8(8), 1997, pp. 1327-1336
The C-disaccharide {alpha-D-GalNAc-C-(1-->4)-beta-D-Glc-OMe} and its i
nterglycosidic beta anomer were synthesized by radical coupling of phe
nyl -benzyl-2-deoxy-1-seleno-alpha-D-galactopyranoside onto methyl -4-
deoxy-4-C-methylene-beta-D-xylo-hexopyranoside, which are temporarily
connected through a phosphoramido tether. A similar reaction was perfo
rmed with methyl -4-deoxy-4-C-methylene-alpha-D-xylo-hexopyranoside to
produce the two closely related alpha-OMe C-disaccharides. (C) 1997 E
lsevier Science Ltd.