Two tetrasaccharides, a-D-GlcAp-(1->3)-a-D-Galp-(1->3)-b-D-Manp NAc-(1->4)-b-D-Glcp and a-D-GlcAp-(1->3)-a-D-Glcp-(1->3)-b-D-Manp NAc-(1->4)-b-D-Glcp (protected form), and a pentasaccharide, a-D-Glcp-(1->4)-a-D-GlcAp-(1->3)-a-D-Galp-(1->3)-b-D-Manp NAc-(1->4)-b-D-Glcp have been synthesized from 2-aminoethyl glycoside trisaccharide acceptors in a linear approach via consecutive a-glycosylations. Et thioglycosides were used as glycosyl donors and DMTST in Et2O or NIS/TfOH in CH2Cl2 were employed as promoters. [on SciFinder (R)]