We present the first synthesis of calix[4]arene-based S-glycoclusters via photoinduced multiple thiolâene coupling of tetra- and octa-allyl calix[4]arenes with peracetylated glucosyl thiol (67â88% yields). Moreover we describe the dual clustering at the upper and lower rim of a calix[4]arene with two different sugars (galactose and glucose) via sequential copper(I)-catalyzed azideâalkyne cycloaddition and photoinduced thiolâene coupling.