Inside Back Cover

Solid‐phase glycan synthesis (SPGS) represents a robust method for the preparation of well‐defined glycans. However, the assembly of cis ‐glycosamines remains a significant challenge. In this study, we successfully synthesized four disaccharides and four tetrasaccharides with heparan sulfate backbones, as well as a Fondaparinux‐type pentasaccharide backbone containing GlcN, GlcA, and IdoA residues. This was accomplished through the direct installation of cis ‐linkages on solid‐phase using 2‐azido‐2‐deoxy‐thioglucopyranoside building blocks bearing a tert ‐butyldiphenylsilyl group at the C6‐OH. More details are discussed in the article by Wang et al . on pages 1320—1328. image