Functional Glycopolypeptides: Synthesis and Biomedical Applications

Figure 2

Schematic illustrations of the typical “click” reactions: (a) Cu (I)-catalyzed cycloaddition of alkynes and azides (CuAAC), (b) strain-promoted cycloaddition of alkynes and azides (SPAAC), (c) Diels-Alder reaction, and (d) thiol-involved reactions.

(a)

(b)

(c)

(d)