Click chemistry on curdlan:: A regioselective and quantitative approach to develop artificial β-1,3-glucans with various functional appendages

beta-1,3-Glucans having various functional appendages (lactoside, ferrocene, pyrene. etc.) can be prepared in an convenient, quantitative, and regioselective manner through chemo-selective [3 + 2]-cycloadditions between 6-azido-6-deoxy-curdlan and various functional modules with a terminal alkyne.