Abstract
A stereocontrolled synthesis of the allyl glycoside of a tetrasaccharide fragment of the O-linked polysaccharide chain of the circulating anodic antigen of Schistosoma mansoni, beta-D-GlcpA-(1->3)-beta-D-GalpNAc-(1->6)-[beta-D-GlcpA-(1->3)]-beta-D- GalpNAc, is presented.